Numerical simulation method and device for rotational flow combustion boiler

Abstract

The invention provides a numerical simulation method and device for a rotational flow combustion boiler. The method comprises the steps that an initial parameter description file of a combustor in hydrodynamic simulation software is obtained; determining a speed physical quantity of the combustor according to the initial parameter description file, and performing coordinate transformation on the speed physical quantity to obtain transformed coordinate data; judging whether the transformation coordinate data is consistent with the rotational flow direction of a target simulation combustor or not, and if not, performing direction rotation on the transformation coordinate data to obtain rotation coordinate data; packaging the rotation coordinate data into a new parameter description file for performing numerical simulation on the combustion boiler, and performing coordinate transformation and rotation on the data of the parameter description file in the hydrodynamic simulation software, so that the original data of the file can be used for performing numerical simulation on the combustion boiler under the conditions of not changing a combustor model and not recalculating. Left and right rotation switching of burner data is achieved, and the effects of simplifying the calculated amount and improving the simulation precision are achieved.

Description

Technical Field

[0001] The invention belongs to burner modeling technology, and in particular relates to a numerical simulation method and device for a swirl combustion boiler. Background Art

[0002] Numerical simulation of coal-fired boilers is an important means to study and optimize the coal combustion process, improve boiler efficiency, and reduce pollutant emissions. With the development of computational fluid dynamics (CFD) and combustion simulation technology, numerical simulation has been widely used in coal-fired boiler research. At present, the process of numerical simulation of coal-fired boilers is relatively unified. Basically, three-dimensional modeling is carried out based on the size data of the real boiler, and the model grid is divided and imported into the fluid calculation software for simulation. Among them, the use of fluid dynamics simulation software is the most widely used.

[0003] There are two mainstream calculation methods when using fluid dynamics simulation software to perform numerical simulation of boilers. One is to calculate the burner and furnace as a whole, but the burner is modeled more finely than the furnace, which requires this method to sacrifice part of the burner modeling accuracy in order to match the calculation grids of the two; the other is to model the burner and furnace separately, retaining the fineness of the burner model, but taking more calculation time.

[0004] In order to weigh the pros and cons of the above two calculation methods, some scholars have proposed to model and calculate only a single burner, without the need to model several burners in the furnace. This can make up for the shortcomings of insufficient computing resources and calculation accuracy. However, it is required to strictly ensure that the mesh nodes of the burner outlet surface and the corresponding furnace inlet surface correspond one to one during the mesh division stage. This requires a high level of understanding and application of the software, and the actual operation is relatively complicated. Summary of the invention

[0005] Based on this, the present invention aims to propose a swirl combustion boiler numerical simulation method and device, which simplifies the calculation of the burner part in the boiler numerical simulation process by replacing a part of the repeated and redundant three-dimensional modeling calculation work with miniaturized data transmission.

[0006] In a first aspect, the present invention provides a numerical simulation method for a swirl combustion boiler, comprising:

[0007] Obtain the initial parameter description file of the burner in the fluid dynamics simulation software;

[0008] Determine the speed physical quantity of the burner according to the initial parameter description file, and perform coordinate transformation on the speed physical quantity to obtain transformation coordinate data;

[0009] Determine whether the transformed coordinate data is consistent with the swirl direction of the target simulated burner, and if inconsistent, rotate the transformed coordinate data to obtain rotated coordinate data;

[0010] The rotated coordinate data is packaged into a new parameter description file for numerical simulation of combustion boilers.

[0011] Furthermore, performing coordinate transformation on the speed physical quantity to obtain transformed coordinate data includes:

[0012] The velocity physical quantity is converted from the cylindrical coordinate system to the Cartesian coordinate system to obtain the transformed coordinate data.

[0013] Furthermore, the velocity physical quantity is converted from the cylindrical coordinate system to the Cartesian coordinate system, and the transformed coordinate data obtained include:

[0014] The transformed coordinate data of the velocity physical quantity is obtained according to the following conversion relationship

[0015] ,

[0016] in, , , denote radial velocity, tangential velocity and axial velocity respectively, , , They represent the component velocities in the x, y, and z directions in the Cartesian coordinate system, respectively. It represents the angle between the radial velocity and the x-axis in the cylindrical coordinate system.

[0017] Furthermore, obtaining the initial parameter description file of the burner in the fluid dynamics simulation software includes:

[0018] Check whether the number of grid points and grid point data in the initial parameter description file conform to the recognizable file format of the fluid dynamics simulation software, and arrange the data of each grid point by row for the conforming data.

[0019] Furthermore, when there is inconsistency, the transformed coordinate data is rotated in direction, and the obtained rotated coordinate data includes:

[0020] The tangential velocity and radial velocity are set to the opposite of the original values, and the component velocities in each direction in the Cartesian coordinate system are recalculated to obtain the rotation coordinate data.

[0021] Furthermore, the rotation coordinate data is packaged into a new parameter description file including:

[0022] The rotation coordinate data are sorted in a format recognizable by the fluid dynamics simulation software, packaged into a new parameter description file, and the new parameter description file is named and saved with the burner number.

[0023] In a second aspect, the present invention provides a numerical simulation device for a swirl combustion boiler, comprising:

[0024] A file acquisition module, used to obtain the initial parameter description file of the burner in the fluid dynamics simulation software;

[0025] A coordinate transformation module is used to determine the speed physical quantity of the burner according to the initial parameter description file, and to perform coordinate transformation on the speed physical quantity to obtain transformation coordinate data;

[0026] A coordinate rotation module is used to determine whether the transformed coordinate data is consistent with the swirl direction of the target simulated burner. If not, the transformed coordinate data is rotated to obtain the rotated coordinate data;

[0027] The file encapsulation module is used to encapsulate the rotation coordinate data into a new parameter description file for numerical simulation of the combustion boiler.

[0028] Furthermore, when the coordinate transformation module performs coordinate transformation on the speed physical quantity to obtain the transformed coordinate data, the specific execution process includes:

[0029] The transformed coordinate data of the velocity physical quantity is obtained according to the following conversion relationship

[0030] ,

[0031] in, , , denote radial velocity, tangential velocity and axial velocity respectively, , , They represent the component velocities in the x, y, and z directions in the Cartesian coordinate system, respectively. It represents the angle between the radial velocity and the x-axis in the cylindrical coordinate system.

[0032] In a third aspect, the present invention provides an electronic device, comprising a memory storing computer executable instructions and a processor, wherein when the computer executable instructions are executed by the processor, the device executes each step of the numerical simulation method for a swirl combustion boiler provided in the first aspect.

[0033] In a fourth aspect, the present invention provides a readable storage medium storing a computer executable program, which, when executed, can implement the various steps of the numerical simulation method of the swirl combustion boiler provided in the first aspect.

[0034] It can be seen from the above technical solutions that the present invention has the following beneficial effects:

[0035] The present invention provides a method and device for numerical simulation of a swirl combustion boiler. By performing coordinate transformation and rotation on the data of a parameter description file in fluid dynamics simulation software, the original data of the file can realize left-right rotation switching of the burner data without changing the burner model and recalculating. The data obtained by full-size modeling calculation of the burner is used. Compared with the existing simulation methods, the numerical simulation process has advantages in simplifying the calculation amount and improving the simulation accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0037] Figure 1 A flow chart of a numerical simulation method for a swirl combustion boiler provided in an embodiment of the present invention;

[0038] Figure 2 A velocity cloud diagram of a furnace cross section of a swirl combustion boiler provided in an embodiment of the present invention;

[0039] Figure 3 A schematic diagram of the furnace velocity field of a swirl combustion boiler provided in an embodiment of the present invention;

[0040] Figure 4 A schematic diagram of the structure of a numerical simulation device for a swirl combustion boiler provided in an embodiment of the present invention;

[0041] Figure 5 This is a diagram of the electronic device architecture provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] The swirl burner guides air and fuel into the combustion chamber in a rotating manner, thereby forming a vortex flow. The airflow rotation mode is divided into left-hand rotation and right-hand rotation. The two swirl modes are different, which affects the distribution and mixing effect of the airflow in the burner. This will have different effects on the combustion process, such as the stability and uniformity of the flame, and will also lead to different turbulence characteristics, affecting the combustion efficiency.

[0044] Under deep peak load regulation, the boiler of a coal-fired power plant is prone to low-load stable combustion problems, which leads to boiler extinguishing and affects the safe and stable operation of the unit. For boilers with front and rear hedge swirl burners, most current studies model the swirl burner separately and fail to couple the swirl burner with the boiler, resulting in the simulation results being unable to reflect the real swirl information of the swirl burner.

[0045] In view of this, the present invention provides a numerical simulation method and device for a swirl combustion boiler through the following embodiments, so as to realize the coupling of the swirl burner and the boiler, so that the outlet information of the swirl burner, including velocity field, temperature field and particle field information, is coupled with the furnace depth.

[0046] See also Figure 1 An embodiment of the present invention provides a numerical simulation method for a swirl combustion boiler, comprising the following steps:

[0047] Step S110: Obtain the initial parameter description file of the burner in the fluid dynamics simulation software.

[0048] Specifically, this step extracts the initial parameter description file of the burner from the fluid dynamics simulation software. The file consists of the grid point coordinates of the model and the grid point calculation results. The parameter description file is used to define various boundary conditions, initial conditions or user-defined distribution data, mainly including the spatial position of the burner and various physical quantity parameters. The physical quantities include velocity distribution, temperature distribution, pressure distribution, turbulence parameters, component concentration, heat flux, radiation intensity, etc.

[0049] In a further embodiment, before the subsequent processing of the parameter description file, the number of grid points and the grid point data in the initial parameter description file are checked to see if they conform to a recognizable file format of the fluid dynamics simulation software. For data that conforms, the data of each grid point is arranged in rows, with each row representing the physical quantity data of a grid point.

[0050] Step S120: Determine the speed physical quantity of the burner according to the initial parameter description file, and perform coordinate transformation on the speed physical quantity to obtain transformed coordinate data.

[0051] Specifically, the velocity physical quantity is converted from the cylindrical coordinate system to the Cartesian coordinate system to obtain the transformed coordinate data. Specifically, the transformed coordinate data of the velocity physical quantity is obtained according to the following conversion relationship:

[0052] ,

[0053] in, , , denote radial velocity, tangential velocity and axial velocity respectively, , , They represent the component velocities in the x, y, and z directions in the Cartesian coordinate system, respectively. It represents the angle between the radial velocity and the x-axis in the cylindrical coordinate system.

[0054] Step S130: Determine whether the transformed coordinate data is consistent with the swirl direction of the target simulated burner. If not, rotate the transformed coordinate data to obtain rotated coordinate data.

[0055] Specifically, the swirl direction represented by the transformed coordinate data can be determined by calculating the angle of the velocity vector of each grid point according to the swirl direction of the target burner to be simulated. If the two directions are inconsistent, the direction can be adjusted by rotating the coordinate data so that the data input into the calculation software is consistent with the swirl direction of the target simulated burner, that is, rotating 180° to achieve a reversal of direction (from clockwise to counterclockwise or from counterclockwise to clockwise).

[0056] In some embodiments, the coordinate rotation includes setting the tangential velocity and the radial velocity to the opposite of the original value, recalculating the component velocity in each direction under the Cartesian coordinate system, and obtaining the rotation coordinate data, which can also be expressed as , ,Coordinate rotation can ensure that the speed physical quantity data matches the design requirements of the burner, thereby ensuring the accuracy of the simulation.

[0057] Step S140: Encapsulate the rotation coordinate data into a new parameter description file for use in numerical simulation of the combustion boiler.

[0058] Specifically, encapsulating the rotation coordinate data into a new parameter description file includes the following steps:

[0059] The rotation coordinate data are sorted in a format recognizable by the fluid dynamics simulation software, packaged into a new parameter description file, and the new parameter description file is named and saved with the burner number.

[0060] Fluid dynamics simulation software usually requires parameter description files to have the following format: the file header contains some descriptive information (for example, burner number, variable name), and the data is arranged in a specific order, usually in the order of spatial coordinates (for example, x, y, z) or other key physical quantities. The encapsulated new parameter description file includes variable descriptions, coordinate system information, burner number, etc. in the header information, and each line represents a grid point.

[0061] For example, Figure 2 and Figure 3 The velocity cloud diagram obtained by numerically simulating a combustion boiler using the above embodiments of the present invention is shown. Figure 2The furnace cross-section velocity cloud diagram is divided into two burners, the lower one is a left-handed burner, and the upper one is a right-handed burner simulated after adjustment by the present invention. Figure 3 The left and right figures respectively illustrate the velocity fields of the left-rotating burner and the adjusted simulated right-rotating burner. Without changing the burner model and recalculating, the method provided by the present invention can achieve the indiscriminate transition of the two burner data and the switching of the left and right swirl directions, and the calculation results are good. Moreover, because the data obtained by full-scale high-precision burner modeling is used, it has higher accuracy than the boiler simulation scheme of the simplified burner, which verifies that the present invention has more advantages in both simplifying the calculation amount and improving the boiler simulation accuracy.

[0062] The above disclosed embodiment describes in detail a method for numerical simulation of a swirl combustion boiler. The above disclosed method can be implemented using various forms of equipment. Therefore, the present invention also discloses a numerical simulation device for a swirl combustion boiler corresponding to the above method. A specific embodiment is given below for detailed description.

[0063] See also Figure 4 One embodiment of the present invention provides a numerical simulation device for a swirl combustion boiler, comprising:

[0064] The file acquisition module 402 is used to acquire the initial parameter description file of the burner in the fluid dynamics simulation software;

[0065] A coordinate transformation module 404 is used to determine the speed physical quantity of the burner according to the initial parameter description file, and to perform coordinate transformation on the speed physical quantity to obtain transformed coordinate data;

[0066] A coordinate rotation module 406 is used to determine whether the transformed coordinate data is consistent with the swirl direction of the target simulated burner, and if not, to rotate the transformed coordinate data to obtain rotated coordinate data;

[0067] The file encapsulation module 408 is used to encapsulate the rotation coordinate data into a new parameter description file for use in numerical simulation of the combustion boiler.

[0068] In a further embodiment, when the coordinate transformation module 404 performs coordinate transformation on the velocity physical quantity to obtain transformed coordinate data, the specific execution process includes:

[0069] The transformed coordinate data of the velocity physical quantity is obtained according to the following conversion relationship

[0070] ,

[0071] in, , , denote radial velocity, tangential velocity and axial velocity respectively, , , They represent the component velocities in the x, y, and z directions in the Cartesian coordinate system, respectively. It represents the angle between the radial velocity and the x-axis in the cylindrical coordinate system.

[0072] The implementation principle and technical effects of the device provided in the embodiments of the present application are the same as those of the aforementioned method embodiments. For the sake of brief description, for matters not mentioned in the device embodiment, reference may be made to the corresponding contents in the aforementioned method embodiments.

[0073] The methods and related devices mentioned in the above embodiments are described with reference to the method flow charts and / or structural diagrams provided in the embodiments of the present application. Specifically, each process and / or block in the method flow charts and / or structural diagrams, as well as the combination of processes and / or blocks in the flow charts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the process in the process. Figure 1 Schematic diagram of one or more processes and / or structures Figure 1 These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing device to work in a specific way, so that the instructions stored in the computer-readable memory produce a product including an instruction device, which implements the functions specified in the process. Figure 1 Schematic diagram of one or more processes and / or structures Figure 1 These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide for implementing the process in the process. Figure 1 A flow or multiple flows and / or structures illustrate the steps of the functions specified in one block or multiple blocks.

[0074] The following embodiments are described by taking the method applied to a computer device as an example. It can be understood that the computer device can be any device with computing and processing functions, and can be but not limited to a server or a personal laptop computer, etc. In one embodiment, the computer device can be an application server, and the application server can be a server for running an application to be tested.

[0075] See also Figure 5, which shows a hardware block diagram of an electronic device, the electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present application described and / or required herein.

[0076] like Figure 5 As shown, the electronic device includes: at least one processor 1, at least one communication interface 2, at least one memory 3 and at least one communication bus 4;

[0077] In the embodiment of the present application, the number of the processor 1, the communication interface 2, the memory 3, and the communication bus 4 is at least one, and the processor 1, the communication interface 2, and the memory 3 communicate with each other through the communication bus 4;

[0078] The processor 1 may be a central processing unit CPU, or an application-specific integrated circuit ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the embodiments of the present invention, etc.;

[0079] The memory 3 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), etc., such as at least one disk memory;

[0080] The memory stores a program, and the processor can call the program stored in the memory, wherein the program is used to: implement each processing flow of the aforementioned swirl combustion boiler numerical simulation solution.

[0081] An embodiment of the present invention also provides a readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the various processing flows of the numerical simulation scheme for a swirl combustion boiler provided in the above embodiment and / or any possible implementation method in combination with the embodiment are implemented.

[0082] The above-mentioned embodiments have described the present invention in particular detail with respect to possible scenarios, and those skilled in the art will recognize that the present invention can be practiced through other embodiments. The specific naming of components, the capitalization of terms, attributes, data structures, or any other programming or structural aspects are not mandatory or important, and the mechanisms or features of the present invention may have different names, forms, or procedures. The system may be implemented by a combination of hardware and software (as described), entirely by hardware elements, or entirely by software elements. The specific division of functions between the various system components described herein is exemplary only and not mandatory; on the contrary, the functions performed by a single system component may be performed by multiple components, or the functions performed by multiple components may be performed by a single component.

[0083] Those skilled in the art should understand that the various steps of the above disclosed method can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, optionally, they can be implemented with program codes executable by the computing device, so that they can be stored in a storage device and executed by the computing device, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the embodiments of the present invention are not limited to any specific combination of hardware and software.

[0084] These computing device executable programs (also referred to as programs, software, software applications, or code) include machine instructions for programmable processors, and these computing programs can be implemented using high-level procedural and / or object-oriented programming languages, and / or assembly / machine languages. As used herein, the terms "machine-readable medium" and "computer-readable medium" refer to any computer program product, device, and / or device (e.g., disk, optical disk, memory, programmable logic device (PLD)) for providing machine instructions and / or data to a programmable processor, including a machine-readable medium that receives machine instructions as a machine-readable signal. The term "machine-readable signal" refers to any signal for providing machine instructions and / or data to a programmable processor.

[0085] Certain aspects of the present invention include process steps and instructions described herein in the form of algorithms. It should be noted that the process steps and instructions of the present invention can be implemented in software, firmware and / or hardware, and when implemented by software, it can be downloaded, stored on different platforms used by various operating systems and operated from the platforms.

[0086] Those skilled in the art will understand that the structures shown in the accompanying drawings are merely block diagrams of partial structures related to the scheme of the present application, and do not constitute a limitation on the terminal device to which the scheme of the present application is applied. The specific terminal device may include more or fewer components than those shown in the figures, or combine certain components, or have a different arrangement of components.

[0087] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "possible design" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0088] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A numerical simulation method for a swirl combustion boiler, characterized in that: include: Obtain the initial parameter description file of the burner in the fluid dynamics simulation software; Determine the speed physical quantity of the burner according to the initial parameter description file, and perform coordinate transformation on the speed physical quantity to obtain transformed coordinate data; Determine whether the transformed coordinate data is consistent with the swirl direction of the target simulated burner, and if inconsistent, rotate the transformed coordinate data to obtain rotated coordinate data; The rotation coordinate data is packaged into a new parameter description file for use in numerical simulation of a combustion boiler.

2. The method according to claim 1, characterized in that The coordinate transformation of the speed physical quantity to obtain the transformed coordinate data comprises: The velocity physical quantity is converted from the cylindrical coordinate system to the Cartesian coordinate system to obtain the transformed coordinate data.

3. The method according to claim 2, characterized in that The step of converting the velocity physical quantity from the cylindrical coordinate system to the Cartesian coordinate system to obtain the transformed coordinate data comprises: The transformed coordinate data of the velocity physical quantity is obtained according to the following conversion relationship ， in, , , denote radial velocity, tangential velocity and axial velocity respectively, , , They represent the component velocities in the x, y, and z directions in the Cartesian coordinate system, respectively. It represents the angle between the radial velocity and the x-axis in the cylindrical coordinate system.

4. The method according to claim 1, characterized in that: The method of obtaining the initial parameter description file of the burner in the fluid dynamics simulation software includes: Check whether the number of grid points and grid point data in the initial parameter description file conform to the recognizable file format of the fluid dynamics simulation software, and arrange the data of each grid point by row for the conforming data.

5. The method according to claim 3, characterized in that: When the transformed coordinate data is inconsistent with the swirl direction of the target simulated burner, the transformed coordinate data is rotated in the direction to obtain the rotated coordinate data including: The tangential velocity and radial velocity are set to the opposite of the original values, and the component velocities in each direction in the Cartesian coordinate system are recalculated to obtain the rotation coordinate data.

6. The method according to claim 1, characterized in that The step of packaging the rotation coordinate data into a new parameter description file comprises: The rotation coordinate data are sorted in a format recognizable by the fluid dynamics simulation software, packaged into a new parameter description file, and the new parameter description file is saved by naming it with the burner number.

7. A numerical simulation device for a swirl combustion boiler, characterized in that: include: A file acquisition module, used to obtain the initial parameter description file of the burner in the fluid dynamics simulation software; A coordinate transformation module, used for determining a speed physical quantity of the burner according to the initial parameter description file, and performing coordinate transformation on the speed physical quantity to obtain transformation coordinate data; A coordinate rotation module, used to determine whether the transformed coordinate data is consistent with the swirl direction of the target simulated burner, and if not, to rotate the transformed coordinate data to obtain rotated coordinate data; The file encapsulation module is used to encapsulate the rotation coordinate data into a new parameter description file for numerical simulation of the combustion boiler.

8. The device according to claim 7, characterized in that When the coordinate transformation module performs coordinate transformation on the speed physical quantity to obtain transformed coordinate data, the specific execution process includes: The transformed coordinate data of the velocity physical quantity is obtained according to the following conversion relationship ， in, , , denote radial velocity, tangential velocity and axial velocity respectively, , , They represent the component velocities in the x, y, and z directions in the Cartesian coordinate system, respectively. It represents the angle between the radial velocity and the x-axis in the cylindrical coordinate system.

9. An electronic device, characterized in that: The device comprises a memory storing computer executable instructions and a processor. When the computer executable instructions are executed by the processor, the device executes the numerical simulation method for a swirl combustion boiler as described in any one of claims 1 to 6.

10. A readable storage medium, characterized in that: A computer executable program is stored, and when the program is executed, the numerical simulation method for a swirl combustion boiler as claimed in any one of claims 1 to 6 can be implemented.

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