Method, device, equipment and medium for processing average total pressure of pipeline outlet section

Abstract

The application provides a pipeline outlet section total pressure average processing method, device, equipment and medium, relates to internal flow aerodynamics and fluid mechanics field, and the method comprises the following steps: obtaining the inlet total temperature, the inlet total pressure, the outlet flow field static pressure and the outlet flow field static pressure of a plurality of measuring points on the pipeline outlet section, the outlet total pressure, the outlet Mach number and the outlet airflow angle of the airflow passing through the pipeline under the uniform incoming flow state; based on the above parameters, the local loss kinetic energy of each measuring point, the outlet section normal velocity and the mass flow are calculated by using the kinetic energy loss function, and then the global kinetic energy loss is calculated by using the integral algorithm; the average of the outlet flow field static pressure of the plurality of measuring points, the inlet total temperature, the inlet total pressure, the mass flow and the global kinetic energy loss are input into the average algorithm model set in advance for processing, so that the average total pressure of the pipeline outlet section is obtained; in this way, the calculation process is based on the energy superposition principle, the average total pressure of the pipeline outlet section can be accurately calculated, and the actual application scene is met.

Description

Technical Field

[0001] This application relates to the fields of internal flow aerodynamics and fluid mechanics, and in particular to a method, apparatus, equipment and medium for averaging total pressure at the outlet section of a pipeline. Background Technology

[0002] Aerodynamic theory analysis shows that total pressure represents the sum of airflow mechanical energy. The loss assessment method of airflow total pressure deficit based on the average total pressure at the inlet and outlet can characterize the loss of airflow mechanical energy. Calculating the total pressure at the outlet section of the duct is significant for assessing the airflow loss of duct components such as the intake, compressor, and turbine in the intake system of aero-engines and gas turbines. For example, for duct components, it is necessary to average the distribution of total pressure parameters at the inlet and outlet sections to obtain the surface average total pressure parameters.

[0003] In existing technologies, the surface average total pressure parameter can be calculated using the area averaging method. However, since the area average is constrained by the distribution pattern of measurement points on the surface, measurement points are typically arranged with equal area or equal radial distribution. Furthermore, the total pressure corresponding to each measurement point is obtained, and then an integral algorithm is used to calculate the average total pressure of all measurement points to obtain the surface average total pressure parameter.

[0004] However, the above method for calculating the average total pressure parameter has problems such as the superposition of intensity quantities and the lack of actual physical meaning, resulting in poor calculation accuracy. Summary of the Invention

[0005] This application provides a method, apparatus, equipment, and medium for averaging total pressure at a pipeline outlet section, which addresses the problem that existing methods for calculating surface average total pressure parameters lack practical physical meaning, resulting in poor calculation accuracy.

[0006] In a first aspect, this application provides a method for averaging total pressure at a pipeline outlet section, the method comprising:

[0007] The system acquires the total inlet temperature and total inlet pressure of the airflow passing through the pipe under a uniform inflow condition, and acquires the outlet static pressure, outlet total pressure, outlet Mach number, and outlet airflow angle at multiple measurement points on the pipe outlet cross-section under a non-recirculating and static pressure uniform condition; the uniform inflow condition is used to indicate that the airflow is uniform at the pipe inlet and the pressure is uniform at the pipe outlet.

[0008] Based on the inlet total temperature, the inlet total pressure, the outlet flow field static pressure and the outlet total pressure at the multiple measurement points, the local kinetic energy loss at each measurement point corresponding to the pipe outlet section is calculated using the kinetic energy loss function.

[0009] Based on the outlet Mach number and the outlet airflow angle, the cross-sectional normal velocity and mass flow rate corresponding to the pipe outlet section are calculated. Based on the mass flow rate, the cross-sectional normal velocity, and the local loss kinetic energy, the global loss kinetic energy corresponding to the pipe outlet section is calculated using an integral algorithm. The integral algorithm is used to represent the superposition of energy.

[0010] The average total pressure of the pipe outlet section is obtained by processing the average static pressure of the outlet flow field at the multiple measurement points, the total inlet temperature, the total inlet pressure, the mass flow rate, and the global loss kinetic energy input into a pre-set average algorithm model; the average total pressure is used to calculate the loss value of the airflow during the pipe transmission process.

[0011] Optionally, the static pressure, total pressure, Mach number, and flow angle of the outlet flow field at multiple measurement points on the pipe outlet cross-section under conditions of no backflow and uniform static pressure can be obtained, including:

[0012] A multi-hole pneumatic probe calibrated with a probe database is used to measure the outlet static pressure, outlet total pressure, outlet Mach number, and outlet airflow angle at multiple measurement points of the pipe outlet section under no-backflow and uniform static pressure conditions. The probe database is generated from the calibration wind tunnel and includes the probe measurement orifice pressure, wall static pressure under calibration conditions, total flow field pressure, outlet total temperature, and probe installation angle, which are used for interpolation calculation to obtain the outlet static pressure, outlet total pressure, outlet Mach number, and outlet airflow angle.

[0013] Optionally, the formula corresponding to the kinetic energy loss function is expressed as follows:

[0014]

[0015] in, P represents the local kinetic energy loss at the i-th measurement point, i = 1, 2, ..., n; t1 Indicates the total import pressure; T t1 Indicates the total import temperature; P t2i P represents the total outlet pressure at the i-th measurement point; s2i R represents the static pressure of the outlet flow field at the i-th measurement point; R represents the gas constant; and k represents the adiabatic index of the airflow.

[0016] Optionally, the formula corresponding to the integration algorithm is expressed as follows:

[0017]

[0018] Among them, E g This indicates the total loss of kinetic energy. denoted as the local loss kinetic energy at the i-th measurement point; m represents the mass flow rate; V represents the cross-sectional normal velocity; ρ represents the fluid density; and A represents the cross-sectional area.

[0019] Optionally, the formula corresponding to the pre-defined average algorithm model is expressed as follows:

[0020]

[0021] in, Indicates the average total pressure. P represents the average static pressure of the outlet flow field at multiple measurement points; t1 Indicates the total inlet pressure; E g T represents the total loss of kinetic energy; t1 The total inlet temperature is represented by ; m represents the mass flow rate; R represents the gas constant; and k represents the gas adiabatic index.

[0022] Optionally, the method further includes:

[0023] Calculate the difference between the total inlet pressure and the average total pressure to obtain the total pressure deficit value, and obtain the inlet flow field static pressure corresponding to the airflow passing through the pipe inlet under uniform inflow conditions. Calculate the difference between the total inlet pressure and the inlet flow field static pressure to obtain the inlet pressure difference of the pipe.

[0024] The ratio of the total pressure loss to the inlet pressure difference is calculated to obtain the average total pressure loss of the pipeline; the average total pressure loss reflects the loss of airflow during pipeline transmission.

[0025] Secondly, this application provides a device for averaging total pressure at a pipeline outlet section, the device comprising:

[0026] The acquisition module is used to acquire the total inlet temperature and total inlet pressure of the airflow passing through the pipe under a uniform inflow state, and to acquire the outlet static pressure, outlet total pressure, outlet Mach number and outlet airflow angle of multiple measurement points on the pipe outlet cross section under a non-recirculation and static pressure uniform state; the uniform inflow state is used to indicate that the airflow is uniform at the pipe inlet and the pressure is uniform at the pipe outlet.

[0027] The first calculation module is used to calculate the local kinetic energy loss at each measurement point corresponding to the pipe outlet section based on the inlet total temperature, the inlet total pressure, the outlet flow field static pressure and the outlet total pressure of the multiple measurement points, using the kinetic energy loss function.

[0028] The second calculation module is used to calculate the cross-sectional normal velocity and mass flow rate corresponding to the pipe outlet cross-section based on the outlet Mach number and the outlet airflow angle, and to calculate the global loss kinetic energy corresponding to the pipe outlet cross-section using an integral algorithm based on the mass flow rate, the cross-sectional normal velocity and the local loss kinetic energy; the integral algorithm is used to represent the superposition of energy.

[0029] The processing module is used to process the average static pressure of the outlet flow field at the multiple measurement points, the total inlet temperature, the total inlet pressure, the mass flow rate, and the global loss kinetic energy into a pre-set average algorithm model to obtain the average total pressure of the pipe outlet section; the average total pressure is used to calculate the loss value of the airflow during the pipe transmission process.

[0030] Thirdly, this application also provides an electronic device, including: a processor, and a memory communicatively connected to the processor;

[0031] The memory stores computer-executed instructions;

[0032] The processor executes computer execution instructions stored in the memory to implement the method as described in any one of the first aspects.

[0033] Fourthly, this application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the method as described in any one of the first aspects.

[0034] Fifthly, this application also provides a computer program product, including a computer program that, when executed by a processor, implements the method as described in any one of the first aspects.

[0035] In summary, this application provides a method, apparatus, equipment, and medium for averaging the total pressure at a pipe outlet section. This method involves measuring the total inlet temperature and pressure under uniform inflow conditions, and measuring the total outlet pressure, static pressure, Mach number, and flow angle at multiple measurement points at the pipe outlet section under conditions of no backflow and uniform static pressure. The kinetic energy loss at multiple measurement points on the pipe outlet section under isentropic and non-isentropic conditions is calculated using these aerodynamic parameters, leading to the sum of the total kinetic energy losses at the pipe outlet section. Furthermore, the average total pressure at the pipe outlet section is calculated based on the isentropic relationship for the same location. Therefore, the method of this application is computationally simple, solves the problem of intensity quantity superposition and lack of practical physical meaning during the integration process in the area averaging method, and more accurately calculates the average total pressure at the pipe outlet section. Attached Figure Description

[0036] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0037] Figure 1 This is a schematic diagram of an application scenario provided by an embodiment of this application;

[0038] Figure 2A schematic flowchart illustrating a method for averaging total pressure at a pipeline outlet section, provided in an embodiment of this application;

[0039] Figure 3 A schematic diagram of the inlet / outlet cross-section of a compressor blade cascade provided in an embodiment of this application;

[0040] Figure 4 This application provides a temperature-entropy (TS) diagram corresponding to the compressor blade pressurization process.

[0041] Figure 5 A schematic diagram of a total pressure averaging treatment device for a pipeline outlet section provided in this application embodiment;

[0042] Figure 6 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0043] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0044] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0045] To facilitate a clear description of the technical solutions in the embodiments of this application, the terms "first" and "second" are used in the embodiments of this application to distinguish identical or similar items with essentially the same function and purpose. For example, "first device" and "second device" are merely used to distinguish different devices and do not limit their order of execution. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and that "first" and "second" do not necessarily imply that they are different.

[0046] It should be noted that, in this application, the terms "exemplary" or "for example" are used to indicate that something is being described as an example, illustration, or illustration. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0047] In this application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0048] Accurately assessing airflow losses in ductwork components such as inlets, compressors, and turbines within aero-engine and gas turbine intake systems is a crucial technical challenge. Currently, airflow loss assessment can be based on aerodynamic theory. Aerodynamic analysis indicates that total pressure represents the sum of airflow mechanical energy. Loss assessment methods based on the average total pressure at the inlet and outlet can characterize the loss of airflow mechanical energy. For ductwork components, averaging the total pressure parameter distribution at the inlet and outlet cross-sections is necessary to obtain the surface-averaged total pressure parameters.

[0049] In one possible implementation, the surface average total pressure parameter can be calculated using the area averaging method. Specifically, since the area average is constrained by the distribution pattern of the measurement points on the surface, the measurement points are usually arranged with equal area distribution or equal radial distribution to reduce the influence of the measurement point position on the result. Furthermore, the total pressure corresponding to each measurement point is obtained, and then the average total pressure of all measurement points is calculated using an integral algorithm to obtain the surface average total pressure parameter.

[0050] However, the above-mentioned area averaging method for calculating the surface average total pressure parameter has problems such as the superposition of intensity quantities and the lack of actual physical meaning, resulting in poor calculation accuracy.

[0051] Another possible implementation is to use a reliable average parameter calculation method recognized in engineering practice, such as the mass averaging method, to calculate the surface average total pressure parameter. Specifically, by obtaining the weight ratio of flow rate on the measurement surface, the product of total pressure and flow rate is calculated based on this weight ratio, and then integrated using an integral algorithm to obtain a more reliable surface average parameter value.

[0052] However, the above-mentioned average parameter calculation method, which is based on the superposition process of the average total pressure on the measurement surface, has the problem of intensity superposition and has no actual physical meaning. It lacks integration with reality, resulting in poor calculation accuracy.

[0053] To address the aforementioned problems, this application provides a method for averaging the total pressure at the pipe outlet section. This method involves measuring the total inlet temperature and pressure under uniform inflow conditions, and measuring the outlet total pressure, outlet static pressure, outlet Mach number, and outlet airflow angle at multiple measurement points at the pipe outlet section under conditions of no backflow and uniform static pressure. The kinetic energy loss at multiple measurement points on the pipe outlet section under isentropic and non-isentropic conditions is then calculated using these aerodynamic parameters, leading to the sum of the total kinetic energy losses at the pipe outlet section. Furthermore, the average total pressure at the pipe outlet section is calculated based on the isentropic relationship for the same location. Therefore, the method of this application is computationally simple and solves the problems of superposition of intensity quantities during the integration process and lack of practical physical meaning in the integration process of area-averaged and mass-averaged methods, thus calculating the average total pressure at the pipe outlet section more accurately.

[0054] For example, Figure 1 This is a schematic diagram of an application scenario provided in an embodiment of this application, such as... Figure 1 As shown, this application scenario can be applied to the calculation of the average total pressure at the outlet cross-section of airflow duct components such as intake ducts, compressors, and turbines. This application scenario includes a user terminal device 101 and a data processing system 102. The data processing system 102 is used to calculate the average total pressure at the outlet cross-section of the airflow duct 103. The airflow duct 103 has a duct inlet 1031 and a duct outlet 1032. Multiple measurement points are deployed at the duct outlet 1032. Each measurement point can be deployed randomly or according to a certain pattern, such as deployment with equal area. This application embodiment does not specifically limit this.

[0055] Specifically, the data processing system 102 can acquire the measurement parameters of the pipe inlet 1031 under uniform inflow, including the total inlet temperature and total inlet pressure. Correspondingly, it also needs to acquire the aerodynamic parameters such as the static pressure of the outlet flow field, the total outlet pressure, the outlet Mach number, and the outlet airflow angle corresponding to multiple measurement points deployed at the pipe outlet 1032. Furthermore, based on the aerodynamic parameters acquired above, the local kinetic energy loss values ​​at multiple measurement points on the pipe outlet 1032 cross section and the total global kinetic energy loss value of the pipe outlet 1032 cross section can be calculated under isentropic and non-isentropic conditions. Then, based on the isentropic relationship of the same station, and based on the calculated local kinetic energy loss values ​​and the total global kinetic energy loss values ​​and distribution curves at multiple measurement points, the average total pressure of the pipe outlet 1032 cross section can be calculated. This average total pressure can be used to calculate the loss value of the airflow during the transmission process of the airflow pipe 103, and can also be used to predict whether there are safety risks in the airflow pipe 103. This application embodiment does not specifically limit the use and application scenarios of the average total pressure. The average total pressure can be applied to a variety of different types of application scenarios.

[0056] Furthermore, the calculated average total pressure can be sent to the user's terminal device 101 for display, so that the user can view the average total pressure of the airflow duct 103 and perform subsequent application analysis based on the average total pressure, such as calculating the value of the compressibility factor, the wall thickness of the airflow duct 103, the air storage capacity of the airflow duct 103, the pressure drop of the airflow duct 103, and the loss value of the airflow during the transmission process in the duct. This application embodiment does not specifically limit the subsequent application analysis of the average total pressure; the above is only an example.

[0057] It should be noted that the above-mentioned aerodynamic parameters also include measurement parameters; the experimental measurement method used for these aerodynamic parameters is similar to the traditional mass averaging method, and the calculation is simple; the isentropic case refers to the process in which the entropy value of the airflow remains unchanged from the pipe inlet to the pipe outlet, and the non-isentropic case is the opposite of the isentropic case, which will not be elaborated here.

[0058] It is understood that the aforementioned terminal device can also be a display device corresponding to the data processing system 102. This application embodiment does not specifically limit the display device and transmission method of the average total voltage.

[0059] Optionally, the aforementioned terminal equipment can be either a wireless terminal or a wired terminal. A wireless terminal can be a device that provides voice and / or other service data connectivity to a user, a handheld device with wireless connectivity, or other processing devices connected to a wireless modem. The wireless terminal can communicate with one or more core network devices via a Radio Access Network (RAN). The wireless terminal can be a mobile terminal, such as a mobile phone (or "cellular" phone) or a computer with a mobile terminal, for example, a portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile device, which exchanges voice and / or data with the RAN. For example, a wireless terminal can also be a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), or other similar devices. A wireless terminal can also be referred to as a system, subscriber unit, subscriber station, mobile station, mobile, remote station, remote terminal, access terminal, user terminal, user agent, user device, or user equipment; no specific terminology is used here. Optionally, the aforementioned terminal devices can be smartphones, tablets, or other similar devices.

[0060] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will be described below with reference to the accompanying drawings.

[0061] Figure 2 A schematic flowchart illustrating a method for averaging total pressure at a pipeline outlet section, as provided in this application embodiment, is shown below. Figure 2 As shown, the method for averaging total pressure at the pipe outlet section includes the following steps:

[0062] S201. Obtain the total inlet temperature and total inlet pressure of the airflow passing through the pipe under a uniform inflow state, and obtain the outlet static pressure, outlet total pressure, outlet Mach number and outlet airflow angle of multiple measurement points on the pipe outlet cross section under a non-recirculation and static pressure uniform state; the uniform inflow state is used to indicate that the airflow is uniform at the pipe inlet and the pressure is uniform at the pipe outlet.

[0063] In this embodiment of the application, the total inlet temperature and total inlet pressure are measured under uniform inflow conditions, and the total outlet pressure, static pressure of the outlet flow field, Mach number of the outlet, and outlet airflow angle of multiple measurement points of the outlet section are measured under the conditions of no backflow and uniform static pressure at the outlet section of the pipe; the outlet Mach number is used to describe the characteristic number of the ratio of the outlet velocity of the compressible flow to the propagation velocity of the pressure disturbance.

[0064] The deployment of the multiple measurement points can be uniformly distributed according to a certain rule, such as based on the rule of equal area distribution or equal radial distribution, or it can be randomly distributed, that is, randomly deployed in the form of discrete points. This application embodiment does not make specific limitations on this.

[0065] For example, consider a compressor planar blade cascade. Figure 3 A schematic diagram of the inlet / outlet cross-section of a compressor blade cascade is provided for an embodiment of this application, as shown below. Figure 3 As shown, the measured parameters of the inlet station during uniform inflow are given: inlet total temperature T. t1 Import total pressure P t1 Inlet flow field static pressure P s1 Imported Mach number M a1 The inlet airflow angle β1 and the total outlet pressure P corresponding to multiple discrete points i in the outlet station. t2i Static pressure P at the outlet flow field s2i The total outlet temperature T of the outlet flow field t2i Export Mach number M a2i The outlet airflow angle β2 and the distribution curve along the grid pitch L direction.

[0066] In the absence of internal heat sources, chemical reactions, and large wall heat transfer effects, the total temperature of the flow field at the pipe inlet and outlet can be approximated as constant, i.e., T. t1 =T t2i .

[0067] S202. Based on the inlet total temperature, the inlet total pressure, the outlet flow field static pressure and the outlet total pressure at the multiple measurement points, calculate the local loss kinetic energy at each measurement point corresponding to the pipe outlet section using the kinetic energy loss function.

[0068] In this embodiment, the kinetic energy loss function may refer to a pre-defined function for calculating the kinetic energy loss at multiple measurement points. The kinetic energy loss function may be in the form of a function, which directly calculates the local kinetic energy loss based on the data processing system, or it may be in the form of an algorithm model, in which the required aerodynamic parameters are input into the algorithm model to obtain the local kinetic energy loss. This embodiment does not specifically limit the form of the kinetic energy loss function.

[0069] The aerodynamic parameters include inlet total temperature, inlet total pressure, outlet static pressure and outlet total pressure at multiple measurement points, outlet Mach number and outlet airflow angle, etc. This application embodiment does not specifically limit the number and type of aerodynamic parameters.

[0070] For example, taking a compressor planar blade cascade as an example, since the compressor pressurization process can be understood as a micro-element compression process, Figure 4 A temperature-entropy (TS) diagram corresponding to the compressor blade pressurization process provided in this application embodiment is shown below. Figure 4 As shown, the outlet static pressure P reached by isentropic and non-isentropic processes s2 Similarly, under the condition that there is no flow separation and the static pressure is uniform at the outlet station 2, that is, the pipe outlet section is in a state of no backflow and uniform static pressure, the kinetic energy loss corresponding to each streamline from the inlet station 1 to the outlet station 2 can be calculated by the kinetic energy loss function, that is, the local loss of kinetic energy at each measurement point.

[0071] S203. Based on the outlet Mach number, the outlet airflow angle, the outlet total pressure, and the outlet total temperature, calculate the cross-sectional normal velocity and mass flow rate corresponding to the pipe outlet section, and based on the mass flow rate, the cross-sectional normal velocity, and the local loss kinetic energy, calculate the global loss kinetic energy corresponding to the pipe outlet section using an integral algorithm; the integral algorithm is used to represent the superposition of energy.

[0072] Optionally, based on the outlet Mach number and the outlet airflow angle, a predefined algorithm is used to calculate the cross-sectional normal velocity and mass flow rate corresponding to the pipe outlet section. The predefined algorithm is an algorithm for calculating the mass flow rate and cross-sectional normal velocity based on the outlet Mach number and the outlet airflow angle. This predefined algorithm can refer to existing methods, and the specific algorithm corresponding to the predefined algorithm is not limited in the embodiments of this application.

[0073] The mass flow rate refers to the mass of fluid passing through the effective cross-section of a closed pipe or open channel per unit time, and can be expressed as the product of volumetric flow rate and fluid density. The volumetric flow rate is the amount of fluid passing through a certain cross-sectional area per unit time, expressed as: Volumetric flow rate (Q) = Average velocity (V) × Pipe cross-sectional area (A); the cross-sectional normal velocity refers to the instantaneous velocity of points perpendicular to the tangent direction of the cross-section when moving along a curve, such as... Figure 3 As shown, it can be determined based on the exit Mach number and the exit airflow angle β2.

[0074] For example, such as Figure 4 As shown, taking a compressor planar blade cascade as an example, based on the exit Mach number and exit airflow angle, the cross-sectional normal velocity and mass flow rate corresponding to the exit section of the compressor planar blade cascade are calculated using a predefined algorithm. Furthermore, the total kinetic energy loss of the exit section can be obtained by integrating the kinetic energy loss function along the cascade pitch L direction. If the computational domain is three-dimensional, the total kinetic energy loss from the inlet to the exit section is obtained by integrating the exit area using an integral algorithm.

[0075] It should be noted that the integration process in the above equation represents the superposition of kinetic energy losses at the exit section, which has practical physical significance.

[0076] S204. The average static pressure of the outlet flow field at the multiple measurement points, the total inlet temperature, the total inlet pressure, the mass flow rate, and the global loss kinetic energy are processed in a pre-set average algorithm model to obtain the average total pressure of the pipe outlet section; the average total pressure is used to calculate the loss value of the airflow during the pipe transmission process.

[0077] In this embodiment of the application, the average algorithm model may refer to an algorithm model used to calculate the average total pressure at the outlet section, which is obtained by conversion based on the isentropic relationship of the same station. The algorithm model is designed based on the kinetic energy loss function and the integral algorithm. This embodiment of the application does not limit the specific formula corresponding to the average algorithm model.

[0078] In this step, based on the pre-defined average algorithm model, the average total pressure of the pipe outlet section based on energy integration can be calculated.

[0079] Therefore, this application provides a method for averaging the total pressure at the outlet section of a pipeline. This method can calculate the average total pressure at the inlet / outlet of the airflow pipeline component based on energy superposition. The area integration process has a clear physical meaning, conforms to practical application scenarios, and is simple and convenient to calculate. As a result, it can more accurately characterize the flow loss of the inlet / outlet airflow from an energy perspective.

[0080] Optionally, the static pressure, total pressure, Mach number, and flow angle of the outlet flow field at multiple measurement points on the pipe outlet cross-section under conditions of no backflow and uniform static pressure can be obtained, including:

[0081] A multi-hole pneumatic probe calibrated with a probe database is used to measure the outlet static pressure, outlet total pressure, outlet Mach number, and outlet airflow angle at multiple measurement points of the pipe outlet section under non-backflow and uniform conditions. The probe database is generated from the calibration wind tunnel and includes the probe measurement hole pressure, wall static pressure under calibration conditions, total flow field pressure, outlet total temperature, and probe installation angle, which are used for interpolation calculation to obtain the outlet static pressure, outlet total pressure, outlet Mach number, and outlet airflow angle.

[0082] In this step, under the condition of no backflow and uniform static pressure at the pipe outlet section, a porous pneumatic probe calibrated with a probe database can be used to measure the total outlet pressure, static pressure of the outlet flow field, Mach number, and outlet airflow angle at multiple measurement points on the outlet section. The probe database calibration process can be carried out by using a machine learning model to train the measurement point data corresponding to the deployment locations of multiple measurement points in the early stage, obtaining a trained machine learning model, and then using the trained machine learning model to calibrate the porous pneumatic probe.

[0083] It should be noted that the porous pneumatic probe is used to measure various parameters in fluid flow through holes such as pressure measuring holes and temperature measuring holes on the head or support rod. The embodiments of this application do not specifically limit the number and type of pneumatic parameters collected by the porous pneumatic probe.

[0084] Therefore, the embodiments of this application can use a porous pneumatic probe calibrated by a probe database to measure aerodynamic parameters, which greatly improves the accuracy of obtaining aerodynamic parameters.

[0085] Optionally, the formula corresponding to the kinetic energy loss function is expressed as follows:

[0086]

[0087] in, P represents the local kinetic energy loss at the i-th measurement point, i = 1, 2, ..., n; t1 Indicates the total import pressure; T t1 Indicates the total import temperature; P t2i P represents the total outlet pressure at the i-th measurement point; s2i R represents the static pressure of the outlet flow field at the i-th measurement point; R represents the gas constant; and k represents the adiabatic index of the airflow.

[0088] It should be noted that ΔU i This represents the difference between the isentropic velocity and the actual velocity at the i-th measurement point; the isentropic velocity can refer to the P value at which the inlet airflow is isentropically stagnant until the outlet.s2i The corresponding speed, such as Figure 4 The speed corresponding to point 3 in the middle; the actual speed can refer to the real speed of the airflow passing through the pipe outlet.

[0089] In this embodiment, the gas constant and the airflow adiabatic index are determined based on the type of airflow. The gas constant and the airflow adiabatic index are fixed values. This embodiment does not limit the specific values ​​corresponding to the gas constant and the airflow adiabatic index.

[0090] For example, taking a compressor planar blade array as an example, such as Figure 4 As shown, the outlet static pressure P reached by isentropic and non-isentropic processes s2 If they are the same, then the local loss kinetic energy corresponding to each flow line from inlet station 1 to outlet station 2 can be calculated by formula (1).

[0091] It should be noted that, Figure 4 Each element in the table has the number "1" in its index, which corresponds to a parameter at the pipe inlet, such as P. t1 This indicates the total inlet pressure of the airflow through the pipe; the subscript containing the number "2" corresponds to the parameter at the pipe outlet, such as P. t2 This indicates the total pressure at the outlet of the pipe through which the airflow passes; the subscript containing the letter "s" corresponds to the static pressure of the flow field, such as P. s2 This indicates the static pressure of the outlet flow field; the subscript containing the letter "t" corresponds to the total pressure, such as P. t2 This represents the total outlet pressure; in this TS diagram, the horizontal axis represents temperature, denoted by "T", and the vertical axis represents entropy, denoted by "S"; correspondingly, Figure 4 The meaning of each element can be determined by referring to the description above.

[0092] Therefore, the embodiments of this application can use formula (1) to calculate the kinetic energy loss at each measurement point on the pipe outlet section under isentropic and non-isentropic conditions, simplifying the process of calculating kinetic energy loss and improving the calculation speed.

[0093] Optionally, the formula corresponding to the integration algorithm is expressed as follows:

[0094]

[0095] Among them, E g This indicates the total loss of kinetic energy. denoted as the local loss kinetic energy at the i-th measurement point; m represents the mass flow rate; V represents the cross-sectional normal velocity; ρ represents the fluid density; and A represents the cross-sectional area.

[0096] In this embodiment, the mass flow rate and fluid density are determined based on the type of airflow, and the cross-sectional normal velocity and cross-sectional area are determined based on the type of pipe. This embodiment does not limit the specific values ​​of mass flow rate, fluid density, cross-sectional normal velocity and cross-sectional area, but determines them based on actual conditions.

[0097] For example, the sum of the total kinetic energy losses at the pipe outlet section, E g As shown in formula (2), the integration process of formula (2) is based on mass flow rate, that is, it can be calculated based on the cross-sectional normal velocity, fluid density and cross-sectional area, and can characterize the superposition of kinetic energy loss at the outlet cross-section, which has practical physical meaning; specifically, as Figure 3 As shown, taking the compressor planar blade cascade as an example, the total kinetic energy loss of the outlet section can be obtained by integrating formula (1) along the cascade pitch L direction; if the calculation domain is three-dimensional, the total kinetic energy loss from the inlet to the outlet section can be obtained by integrating the outlet area according to formula (2), that is, the global loss of kinetic energy.

[0098] Therefore, the embodiments of this application can calculate the global loss kinetic energy corresponding to the pipeline outlet section based on formula (2), and can superimpose the kinetic energy loss of the outlet section, thereby improving the accuracy of kinetic energy loss calculation.

[0099] Optionally, the formula corresponding to the pre-defined average algorithm model is expressed as follows:

[0100]

[0101] in, Indicates the average total pressure. P represents the average static pressure of the outlet flow field at multiple measurement points; t1 Indicates the total inlet pressure; E g T represents the total loss of kinetic energy; t1 The total inlet temperature is represented by ; m represents the mass flow rate; R represents the gas constant; and k represents the gas adiabatic index.

[0102] For example, the formula for calculating the average total pressure of the outlet section can be converted based on the isentropic relationship of the same site, as shown in formula (3). Furthermore, the average total pressure of the outlet section based on energy integration can be calculated based on formula (3).

[0103] Therefore, the embodiment of this application can derive the formula (3) corresponding to the average algorithm model based on the energy integral and the isentropic relationship of the same site. Using formula (3), the average total pressure of the pipeline outlet section can be accurately calculated, thereby improving the accuracy of the calculation.

[0104] Optionally, the method further includes:

[0105] Calculate the difference between the total inlet pressure and the average total pressure to obtain the total pressure deficit value, and obtain the inlet flow field static pressure corresponding to the airflow passing through the pipe inlet under uniform inflow conditions. Calculate the difference between the total inlet pressure and the inlet flow field static pressure to obtain the inlet pressure difference of the pipe.

[0106] The ratio of the total pressure loss to the inlet pressure difference is calculated to obtain the average total pressure loss of the pipeline; the average total pressure loss reflects the loss of airflow during pipeline transmission.

[0107] In this embodiment of the application, under uniform inflow conditions, it is also necessary to measure the inlet static pressure P. s1 Under the assumption of uniform inflow, the static pressure P of the inlet flow field is... s1 With the average static pressure P of the flow field av1 The differences are negligible.

[0108] It should be noted that, under the condition of uniform inflow in the experimental state, the static pressure of the inlet flow field can be replaced by the static pressure of the inlet wall.

[0109] In this step, the total pressure loss value can be calculated based on formula (4), which is shown below:

[0110]

[0111] Furthermore, based on the total inlet pressure and the static pressure of the inlet flow field, as well as formula (4), the average total pressure loss value is calculated. The formula corresponding to this average total pressure loss value is shown in formula (5):

[0112]

[0113] in, The average total pressure loss is represented by formula (3), which can be obtained by substituting formula (3) into formula (5).

[0114] It should be noted that this average total pressure loss can help users adjust the layout of airflow ducts to obtain the optimal flow conditions, thereby achieving energy-saving effects. This allows users to plan various feasible solutions based on the average total pressure loss.

[0115] Therefore, the embodiments of this application can calculate the average total pressure loss value of airflow during pipeline transmission based on the average total pressure, more accurately characterizing the total pressure loss or total pressure deficit of airflow pipeline components. Furthermore, based on the average total pressure loss value, it can provide users with effective energy-saving concepts and feasible solutions, improving the flexibility of applications.

[0116] In the foregoing embodiments, the method for averaging total pressure at the pipeline outlet section provided in this application has been described. To achieve the functions of the methods provided in the embodiments of this application, the electronic device serving as the execution entity may include hardware structures and / or software modules, implementing the aforementioned functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. Whether a particular function is executed in the form of hardware structures, software modules, or a combination of hardware structures and software modules depends on the specific application and design constraints of the technical solution.

[0117] For example, Figure 5 This application provides a schematic diagram of a pipe outlet section total pressure averaging processing device. The device 500 includes: an acquisition module 501, a first calculation module 502, a second calculation module 503, and a processing module 504. The acquisition module 501 is used to acquire the inlet total temperature and inlet total pressure of the airflow passing through the pipe under a uniform inflow state, and to acquire the outlet flow field static pressure, outlet total pressure, outlet Mach number, and outlet airflow angle at multiple measurement points on the pipe outlet section under a non-recirculation and static pressure uniform state. The uniform inflow state is used to indicate that the airflow is uniform at the pipe inlet and the pressure is uniform at the pipe outlet.

[0118] The first calculation module 502 is used to calculate the local loss kinetic energy at each measurement point corresponding to the pipe outlet section based on the inlet total temperature, the inlet total pressure, the outlet flow field static pressure and the outlet total pressure of the multiple measurement points, using the kinetic energy loss function;

[0119] The second calculation module 503 is used to calculate the cross-sectional normal velocity and mass flow rate corresponding to the pipe outlet cross-section based on the outlet Mach number and the outlet airflow angle, and to calculate the global loss kinetic energy corresponding to the pipe outlet cross-section using an integral algorithm based on the mass flow rate, the cross-sectional normal velocity and the local loss kinetic energy; the integral algorithm is used to represent the superposition of energy.

[0120] The processing module 504 is used to process the average static pressure of the outlet flow field at the multiple measurement points, the total inlet temperature, the total inlet pressure, the mass flow rate, and the global loss kinetic energy into a pre-set average algorithm model to obtain the average total pressure of the pipe outlet section; the average total pressure is used to calculate the loss value of the airflow during the pipe transmission process.

[0121] Optionally, the acquisition module 501 is specifically used for:

[0122] A multi-hole pneumatic probe calibrated with a probe database is used to measure the outlet static pressure, outlet total pressure, outlet Mach number, and outlet airflow angle at multiple measurement points of the pipe outlet section under non-backflow and uniform conditions. The probe database is generated from the calibration wind tunnel and includes the probe measurement hole pressure, wall static pressure under calibration conditions, total flow field pressure, outlet total temperature, and probe installation angle, which are used for interpolation calculation to obtain the outlet static pressure, outlet total pressure, outlet Mach number, and outlet airflow angle.

[0123] Optionally, the formula corresponding to the kinetic energy loss function is expressed as follows:

[0124]

[0125] in, P represents the local kinetic energy loss at the i-th measurement point, i = 1, 2, ..., n; t1 Indicates the total import pressure; T t1 Indicates the total import temperature; P t2i P represents the total outlet pressure at the i-th measurement point; s2i R represents the static pressure of the outlet flow field at the i-th measurement point; R represents the gas constant; and k represents the adiabatic index of the airflow.

[0126] Optionally, the formula corresponding to the integration algorithm is expressed as follows:

[0127]

[0128] Among them, E g This indicates the total loss of kinetic energy. denoted as the local loss kinetic energy at the i-th measurement point; m represents the mass flow rate; V represents the cross-sectional normal velocity; ρ represents the fluid density; and A represents the cross-sectional area.

[0129] Optionally, the formula corresponding to the pre-defined average algorithm model is expressed as follows:

[0130]

[0131] in, Indicates the average total pressure. P represents the average static pressure of the outlet flow field at multiple measurement points; t1 Indicates the total inlet pressure; E g T represents the total loss of kinetic energy; t1 The total inlet temperature is represented by ; m represents the mass flow rate; R represents the gas constant; and k represents the gas adiabatic index.

[0132] Optionally, the device further includes a third computing module; the third computing module is used for:

[0133] Calculate the difference between the total inlet pressure and the average total pressure to obtain the total pressure deficit value, and obtain the inlet flow field static pressure corresponding to the airflow passing through the pipe inlet under uniform inflow conditions. Calculate the difference between the total inlet pressure and the inlet flow field static pressure to obtain the inlet pressure difference of the pipe.

[0134] The ratio of the total pressure loss to the inlet pressure difference is calculated to obtain the average total pressure loss of the pipeline; the average total pressure loss reflects the loss of airflow during pipeline transmission.

[0135] The specific implementation principle and effect of the total pressure averaging treatment device for the pipeline outlet section provided in this application can be found in the relevant descriptions and effects of the above embodiments, and will not be elaborated further here.

[0136] This application also provides a schematic diagram of the structure of an electronic device. Figure 6 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application, such as... Figure 6 As shown, the electronic device may include: a processor 601 and a memory 602 communicatively connected to the processor; the memory 602 stores a computer program; the processor 601 executes the computer program stored in the memory 602, causing the processor 601 to perform the method described in any of the above embodiments.

[0137] The memory 602 and the processor 601 can be connected via bus 603.

[0138] This application also provides a computer-readable storage medium storing computer program execution instructions, which, when executed by a processor, are used to implement the methods described in any of the foregoing embodiments of this application.

[0139] This application also provides a chip for executing instructions, which is used to perform the methods described in any of the foregoing embodiments executed by an electronic device as described in any of the foregoing embodiments of this application.

[0140] This application also provides a computer program product, which includes a computer program that, when executed by a processor, can implement the methods described in any of the foregoing embodiments executed by an electronic device as described in any of the foregoing embodiments of this application.

[0141] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or modules may be electrical, mechanical, or other forms.

[0142] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to implement the solution of this embodiment according to actual needs.

[0143] Furthermore, the functional modules in the various embodiments of this application can be integrated into one processing unit, or each module can exist physically separately, or two or more modules can be integrated into one unit. The unit composed of the above modules can be implemented in hardware or in the form of hardware plus software functional units.

[0144] The integrated modules implemented as software functional modules described above can be stored in a computer-readable storage medium. These software functional modules, stored in a storage medium, include several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute some steps of the methods described in the various embodiments of this application.

[0145] It should be understood that the aforementioned processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. A general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the application can be directly manifested as being executed by a hardware processor, or executed by a combination of hardware and software modules within the processor.

[0146] The memory may include high-speed random access memory (RAM) or non-volatile memory (NVM), such as at least one disk storage device, and may also be a USB flash drive, external hard drive, read-only memory, disk or optical disc, etc.

[0147] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, the buses shown in the accompanying drawings are not limited to a single bus or a single type of bus.

[0148] The aforementioned storage media can be implemented from any type of volatile or non-volatile storage device or a combination thereof, such as Static Random-Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The storage media can be any available medium accessible to general-purpose or special-purpose computers.

[0149] An exemplary storage medium is coupled to a processor, enabling the processor to read information from and write information to the storage medium. Alternatively, the storage medium can be an integral part of the processor. Both the processor and the storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the processor and storage medium can exist as discrete components in an electronic device or host device.

[0150] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily essential to this application.

[0151] It should be further noted that although the steps in the flowchart are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowchart may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the sub-steps or stages of other steps.

[0152] In the above embodiments, the descriptions of each embodiment have their own emphasis. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification.

[0153] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the claims.

[0154] The above description is merely a specific implementation of the embodiments of this application, but the protection scope of the embodiments of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the embodiments of this application should be covered within the protection scope of the embodiments of this application. Therefore, the protection scope of the embodiments of this application should be determined by the protection scope of the claims.

Claims

1. A method for averaging total pressure at a pipeline outlet section, characterized in that, The method includes: The system acquires the total inlet temperature and total inlet pressure of the airflow passing through the pipe under a uniform inflow condition, and acquires the outlet static pressure, outlet total pressure, outlet Mach number, and outlet airflow angle at multiple measurement points on the pipe outlet cross-section under a non-recirculating and static pressure uniform condition; the uniform inflow condition is used to indicate that the airflow is uniform at the pipe inlet and the pressure is uniform at the pipe outlet. Based on the inlet total temperature, the inlet total pressure, the outlet flow field static pressure and the outlet total pressure at the multiple measurement points, the local kinetic energy loss at each measurement point corresponding to the pipe outlet section is calculated using the kinetic energy loss function. Based on the outlet Mach number and the outlet airflow angle, the cross-sectional normal velocity and mass flow rate corresponding to the pipe outlet section are calculated. Based on the mass flow rate, the cross-sectional normal velocity, and the local loss kinetic energy, the global loss kinetic energy corresponding to the pipe outlet section is calculated using an integral algorithm. The integral algorithm is used to represent the superposition of energy. The average total pressure of the pipe outlet section is obtained by processing the average static pressure of the outlet flow field at the multiple measurement points, the total inlet temperature, the total inlet pressure, the mass flow rate, and the global loss kinetic energy input into a pre-set average algorithm model; the average total pressure is used to calculate the loss value of the airflow during the pipe transmission process.

2. The method according to claim 1, characterized in that, Obtain the outlet static pressure, outlet total pressure, outlet Mach number, and outlet gas flow angle at multiple measurement points on the pipe outlet cross-section under conditions of no backflow and uniform static pressure, including: A multi-hole pneumatic probe calibrated with a probe database is used to measure the outlet static pressure, outlet total pressure, outlet Mach number, and outlet airflow angle at multiple measurement points of the pipe outlet section under no-backflow and uniform static pressure conditions. The probe database is generated from the calibration wind tunnel and includes the probe measurement orifice pressure, wall static pressure under calibration conditions, total flow field pressure, outlet total temperature, and probe installation angle, which are used for interpolation calculation to obtain the outlet static pressure, outlet total pressure, outlet Mach number, and outlet airflow angle.

3. The method according to claim 1, characterized in that, The formula corresponding to the kinetic energy loss function is expressed as follows: in, P represents the local kinetic energy loss at the i-th measurement point, i = 1, 2, ..., n; t1 Indicates the total import pressure; T t1 Indicates the total import temperature; P t2i P represents the total outlet pressure at the i-th measurement point; s2i R represents the static pressure of the outlet flow field at the i-th measurement point; R represents the gas constant; and k represents the adiabatic index of the airflow.

4. The method according to claim 3, characterized in that, The formula corresponding to the integration algorithm is expressed as follows: Among them, E g This indicates the total loss of kinetic energy. denoted as the local loss kinetic energy at the i-th measurement point; m represents the mass flow rate; V represents the cross-sectional normal velocity; ρ represents the fluid density; and A represents the cross-sectional area.

5. The method according to claim 4, characterized in that, The formula corresponding to the pre-defined average algorithm model is expressed as follows: in, Indicates the average total pressure. P represents the average static pressure of the outlet flow field at multiple measurement points; t1 E represents the total inlet pressure. g T represents the total loss of kinetic energy; t1 The total inlet temperature is represented by ; m represents the mass flow rate; R represents the gas constant; and k represents the gas adiabatic index.

6. The method according to any one of claims 1-5, characterized in that, The method further includes: Calculate the difference between the total inlet pressure and the average total pressure to obtain the total pressure deficit value, and obtain the inlet flow field static pressure corresponding to the airflow passing through the pipe inlet under uniform inflow conditions. Calculate the difference between the total inlet pressure and the inlet flow field static pressure to obtain the inlet pressure difference of the pipe. The ratio of the total pressure loss to the inlet pressure difference is calculated to obtain the average total pressure loss of the pipeline; the average total pressure loss reflects the loss of airflow during pipeline transmission.

7. A device for averaging total pressure at a pipeline outlet section, characterized in that, The device includes: The acquisition module is used to acquire the total inlet temperature and total inlet pressure of the airflow passing through the pipe under a uniform inflow state, and to acquire the outlet static pressure, outlet total pressure, outlet Mach number and outlet airflow angle of multiple measurement points on the pipe outlet cross section under a non-recirculation and static pressure uniform state; the uniform inflow state is used to indicate that the airflow is uniform at the pipe inlet and the pressure is uniform at the pipe outlet. The first calculation module is used to calculate the local kinetic energy loss at each measurement point corresponding to the pipe outlet section based on the inlet total temperature, the inlet total pressure, the outlet flow field static pressure and the outlet total pressure of the multiple measurement points, using the kinetic energy loss function. The second calculation module is used to calculate the cross-sectional normal velocity and mass flow rate corresponding to the pipe outlet cross-section based on the outlet Mach number and the outlet airflow angle, and to calculate the global loss kinetic energy corresponding to the pipe outlet cross-section using an integral algorithm based on the mass flow rate, the cross-sectional normal velocity and the local loss kinetic energy; the integral algorithm is used to represent the superposition of energy. The processing module is used to process the average static pressure of the outlet flow field at the multiple measurement points, the total inlet temperature, the total inlet pressure, the mass flow rate, and the global loss kinetic energy into a pre-set average algorithm model to obtain the average total pressure of the pipe outlet section; the average total pressure is used to calculate the loss value of the airflow during the pipe transmission process.

8. An electronic device, characterized in that, include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory to implement the method as described in any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the method as described in any one of claims 1-6.

10. A computer program product, characterized in that, Includes a computer program that, when executed by a processor, implements the method as described in any one of claims 1-6.

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