Engineering simulation method and system for quartz lamp thermal loading in structural thermal tests

Abstract

The present invention provides an engineering simulation method and system for thermal loading of quartz lamps in structural thermal tests. According to the size specifications of the quartz lamps used in the structural thermal tests, an engineering simplified model of the quartz lamps is established using finite element analysis software. The thermal load boundary conditions are input and the accuracy of the simulation model is corrected by combining the physical test data, and the solution is obtained to realize the engineering simulation of the thermal loading process of the quartz lamps and obtain the simulation results. Method for establishing the engineering simplified model of the quartz lamp: When modeling, only the most important radiation source (filament) of the quartz lamp is considered and it is simplified into a slender cylinder; the lamp tube wall and the reflective coating are not modeled, and during the calculation, the secondary radiation of the tube wall and the reflection of the reflective coating are integrated into a proportionality coefficient and superimposed on the boundary load of the filament; parts such as the lamp head magnetic base and the filament fixing ring that basically do not participate in the thermal calculation are ignored. The present invention is used for high-precision and rapid engineering simulation of various quartz lamp thermal tests, and has a positive promoting effect on improving the structural thermal test ability.

Description

Technical Field

[0001] The present invention relates to the technical field of aerospace structure thermal test simulation, and specifically, to an engineering simulation method and system for quartz lamp thermal loading in structure thermal tests. Background Art

[0002] The structure thermal test technology is a test technology for equivalently simulating the flight thermal environment and aerodynamic load of an aircraft on the ground. Among them, the radiation heating system with a quartz lamp as the heating element is the most commonly used structure thermal test system at present. Structure thermal tests are mostly non-standard tests, and customized test plans need to be designed for the thermal environment of specific test pieces. Without the assistance of simulation technology, there will be great challenges in heater design, test plan evaluation, test scenario construction, and test data analysis. Conducting quartz lamp thermal loading simulation in structure thermal tests has a positive promoting effect on improving the structure thermal test ability.

[0003] A quartz lamp mainly consists of a filament, a filament support, a quartz tube wall, a porcelain head, a reflective coating, external leads, etc. Among them, the filament of the quartz lamp is made of tungsten wire wound in a spiral, which is the heat source component of the quartz lamp. When the quartz lamp is powered on, the tungsten wire is heated to radiate energy. Part of the energy radiated by the tungsten wire is transmitted through the lamp tube wall, part is absorbed by the lamp tube wall, and the other part is reflected by the reflective coating.

[0004] When conducting quartz lamp thermal loading simulation work conventionally, it is necessary to construct models of the spiral tungsten wire, the lamp tube wall, and the reflective layer. The workload of modeling and meshing is large, and the requirements for computer performance are relatively high. The radiation characteristics of the lamp tube wall are relatively complex, and the setting of parameters during simulation is rather troublesome, resulting in a slow overall progress of the simulation work. In summary, the conventional simulation method is not applicable to the engineering simulation work of quartz lamp thermal loading.

[0005] Therefore, a new technical solution needs to be proposed to improve the above technical problems. Summary of the Invention

[0006] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide an engineering simulation method and system for quartz lamp thermal loading in structure thermal tests.

[0007] According to an engineering simulation method for quartz lamp thermal loading in structure thermal tests provided by the present invention, the method includes the following steps:

[0008] Step S1: According to the size specifications of the quartz lamp used in the structure thermal test;

[0009] Step S2: Use finite element analysis software to establish an engineering simplified model of the quartz lamp;

[0010] Step S3: Input the thermal load boundary conditions and correct the accuracy of the simulation model in combination with physical test data;

[0011] Step S4: Solve and conduct engineering simulation on the thermal loading process of the quartz lamp to obtain simulation results.

[0012] Preferably, the said Step S2 includes the following steps:

[0013] Step S2.1: Consider the radiation source of the quartz lamp during modeling and simplify it into an elongated cylinder;

[0014] Step S2.2: During calculation, integrate the secondary radiation of the tube wall and the reflection of the reflective coating into a proportionality coefficient and superimpose it on the boundary load of the radiation source to obtain an engineered simplified model of the quartz lamp.

[0015] Preferably, the radiation source of the said quartz lamp is modeled as an elongated cylinder. The cross-sectional diameter of the elongated cylinder is the spiral diameter of the radiation source, and the length of the elongated cylinder is the effective working heating length of the radiation source.

[0016] Preferably, in the said Step S3, when correcting the simulation accuracy by combining physical tests, the required physical test data includes the control output of the test control system during the real-time operation of the quartz lamp and the measured value of the heat flux density, and correct the engineering experience parameters in the solution of the thermal load boundary conditions.

[0017] Preferably, the said Step S4 includes the following steps:

[0018] Step S4.1: Calculate the real-time working voltage of the quartz lamp according to the control output of the physical quartz lamp thermal test control system;

[0019] Step S4.2: Calculate the real-time power of the quartz lamp according to the engineering experience formula;

[0020] Step S4.3: Calculate the real-time temperature of the radiation source using the radiation method;

[0021] Step S4.4: Calculate the secondary radiation of the quartz lamp tube wall and the reflection of the reflective coating by superposition according to the engineering experience formula;

[0022] Step S4.5: Determine the thermal load boundary parameters for the thermal loading simulation of the quartz lamp.

[0023] Preferably, in the said Step S4.1, calculate the real-time working voltage of the quartz lamp according to the control output of the physical quartz lamp thermal test control system. The control output range of the control system is 0 - 20 mv, and the working voltage range of the quartz lamp is 0 - 380 V. The conversion relationship between the two is linearly corresponding, and its calculation formula is:

[0024] U 实时 =19×K 实时

[0025] In the formula, U 实时is the real-time working voltage of the quartz lamp, K 实时 is the real-time output of the control system.

[0026] Preferably, in step S4.2, the real-time power of the quartz lamp is calculated according to the engineering experience formula, and the calculation formula is:

[0027]

[0028] In the formula, P 实时 is the real-time power of the quartz lamp, P 额定 is the rated power of the quartz lamp, U 实时 is the real-time working voltage of the quartz lamp, U 额定 is the rated working voltage of the quartz lamp, and t is the engineering experience parameter.

[0029] Preferably, in step S4.3, the radiation method is used to calculate the real-time temperature of the radiation source, and the calculation formula is:

[0030]

[0031] In the formula, T 实时 is the real-time thermodynamic temperature of the radiation source, S 表 is the surface area of the slender cylinder.

[0032] Preferably, in step S4.4, the secondary radiation of the quartz lamp tube wall and the reflection of the reflection coating are calculated by superposition according to the engineering experience formula, and the calculation formula is:

[0033] T 载荷 = η·T 实时

[0034] In the formula, T 载荷 is the boundary load parameter of the quartz lamp thermal loading simulation, and η is the engineering experience parameter for superposing the secondary radiation of the quartz lamp tube wall and the reflection of the reflection coating.

[0035] The present invention also provides an engineering simulation system for the thermal loading of a structural thermal test quartz lamp, and the system includes the following modules:

[0036] Module M1: According to the size specifications of the quartz lamp used in the structural thermal test;

[0037] Module M2: Use finite element analysis software to establish an engineered simplified model of the quartz lamp;

[0038] Module M3: Input the thermal load boundary conditions and correct the simulation model accuracy in combination with the physical test data;

[0039] Module M4: Solve and perform an engineered simulation on the quartz lamp thermal loading process to obtain the simulation results;

[0040] The module M2 includes the following modules:

[0041] Module M2.1: Consider the radiation source of the quartz lamp during modeling and simplify it into an elongated cylinder;

[0042] Module M2.2: During calculation, integrate the secondary radiation of the tube wall and the reflection of the reflective coating into a proportionality coefficient and superimpose it on the boundary load of the radiation source to obtain an engineered simplified model of the quartz lamp;

[0043] In the module M3, the physical test data required to correct the simulation accuracy by combining physical tests includes the control output of the test control system and the heat flux density measurement value during the real-time operation of the quartz lamp, and correct the engineering experience parameters in the solution of the thermal load boundary conditions;

[0044] The module M4 includes the following modules:

[0045] Module M4.1: Calculate the real-time working voltage of the quartz lamp according to the control output of the physical quartz lamp thermal test control system;

[0046] Module M4.2: Calculate the real-time power of the quartz lamp according to the engineering experience formula;

[0047] Module M4.3: Calculate the real-time temperature of the radiation source using the radiation method;

[0048] Module M4.4: Calculate the secondary radiation of the quartz lamp tube wall and the reflection of the reflective coating by superposition according to the engineering experience formula;

[0049] Module M4.5: Determine the thermal load boundary parameters for the quartz lamp thermal loading simulation;

[0050] The module M4.1 calculates the real-time working voltage of the quartz lamp according to the control output of the physical quartz lamp thermal test control system. The control output range of the control system is 0 - 20mv, and the working voltage range of the quartz lamp is 0 - 380V. The conversion relationship between the two is linearly corresponding, and its calculation formula is:

[0051] U 实时 = 19×K 实时

[0052] In the formula, U 实时 is the real-time working voltage of the quartz lamp, and K 实时 is the real-time output of the control system;

[0053] The module M4.2 calculates the real-time power of the quartz lamp according to the engineering experience formula, and its calculation formula is:

[0054]

[0055] In the formula, P 实时 is the real-time power of the quartz lamp, P 额定is the rated power of the quartz lamp, U 实时 is the real-time working voltage of the quartz lamp, U 额定 is the rated working voltage of the quartz lamp, and t is an engineering experience parameter;

[0056] The module M4.3 calculates the real-time temperature of the radiation source using the radiation method, and its calculation formula is:

[0057]

[0058] In the formula, T 实时 is the real-time thermodynamic temperature of the radiation source, S 表 is the surface area of the slender cylinder;

[0059] The module M4.4 calculates the secondary radiation of the quartz lamp tube wall and the reflection of the reflective coating according to the engineering experience formula by superposition, and its calculation formula is:

[0060] T 载荷 = η·T 实时

[0061] In the formula, T 载荷 is the boundary load parameter of the thermal loading simulation of the quartz lamp, and η is the engineering experience parameter for superposing the secondary radiation of the quartz lamp tube wall and the reflection of the reflective coating.

[0062] Compared with the prior art, the present invention has the following beneficial effects:

[0063] 1. The present invention provides an engineering simulation method for the thermal loading of a quartz lamp in a structural thermal test, which is used for the rapid and highly accurate engineering simulation of various quartz lamp thermal tests, and has a positive promoting effect on improving the structural thermal test ability;

[0064] 2. The technical feature of the present invention is to provide an engineering simulation method for the thermal loading of a quartz lamp in a structural thermal test, which provides a rapid and high-precision engineering simulation method for simulating the thermal loading characteristics of a quartz lamp in a structural thermal test, greatly reducing the work difficulty of the refined modeling and simulation of the quartz lamp and effectively improving the simulation accuracy;

[0065] 3. The present invention is based on the real-time output parameters of the physical test as the input quantity of the simulation work, and the simulation results can truly and effectively predict the physical test results. The present invention patent is applicable to the simulation of various quartz lamp thermal tests, and has a positive promoting effect on improving the structural thermal test ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] By reading the following detailed description of the non-limiting embodiments with reference to the accompanying drawings, other features, objects and advantages of the present invention will become more apparent:

[0067] Figure 1Flowchart of the engineering simulation method for thermal loading of a quartz lamp in the structural thermal test provided by the present invention;

[0068] Figure 2 Data parameter diagram collected in real time during the test in a specific embodiment of the present invention;

[0069] Figure 3 Simulation data diagram in a specific embodiment of the present invention. Specific implementation manner

[0070] The present invention will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several changes and improvements can still be made. These all belong to the protection scope of the present invention.

[0071] Example 1:

[0072] According to an engineering simulation method for thermal loading of a quartz lamp in a structural thermal test provided by the present invention, the method includes the following steps:

[0073] Step S1: According to the size specifications of the quartz lamp used in the structural thermal test;

[0074] Step S2: Use finite element analysis software to establish an engineered simplified model of the quartz lamp;

[0075] Step S2.1: Consider the radiation source of the quartz lamp during modeling and simplify it into a slender cylinder;

[0076] Step S2.2: During calculation, integrate the secondary radiation of the tube wall and the reflection of the reflective coating into a proportionality coefficient and superimpose it on the boundary load of the radiation source to obtain the engineered simplified model of the quartz lamp.

[0077] The radiation source of the quartz lamp is modeled as a slender cylinder. The cross-sectional diameter of the slender cylinder is the spiral diameter of the radiation source, and the length of the slender cylinder is the effective working heating length of the radiation source.

[0078] Step S3: Input the thermal load boundary conditions and correct the simulation model accuracy in combination with the physical test data; correct the simulation accuracy in combination with the physical test. The required physical test data includes the control output of the test control system and the heat flux density measurement value when the quartz lamp is working in real time, and correct the engineering experience parameters in the solution of the thermal load boundary conditions.

[0079] Step S4: Solve and perform an engineering simulation on the thermal loading process of the quartz lamp to obtain the simulation results.

[0080] Step S4.1: Calculate the real-time working voltage of the quartz lamp according to the control output of the physical quartz lamp thermal test control system; calculate the real-time working voltage of the quartz lamp according to the control output of the physical quartz lamp thermal test control system. The control output range of the control system is 0 - 20 mv, and the working voltage range of the quartz lamp is 0 - 380 V. The conversion relationship between the two is linearly corresponding, and its calculation formula is:

[0081] U 实时 = 19×K 实时

[0082] In the formula, U 实时 is the real-time working voltage of the quartz lamp, and K 实时 is the real-time output of the control system.

[0083] Step S4.2: Calculate the real-time power of the quartz lamp according to the engineering experience formula; calculate the real-time power of the quartz lamp according to the engineering experience formula, and its calculation formula is:

[0084]

[0085] In the formula, P 实时 is the real-time power of the quartz lamp, P 额定 is the rated power of the quartz lamp, U 实时 is the real-time working voltage of the quartz lamp, U 额定 is the rated working voltage of the quartz lamp, and t is the engineering experience parameter. The empirical value range of the engineering experience parameter t is between 1.5 - 1.7. The parameter t varies with different specifications and combination methods of the quartz lamp. The more lamps there are and the denser the arrangement, the larger the value of t;

[0086] Step S4.3: Calculate the real-time temperature of the radiation source using the radiation method; calculate the real-time temperature of the radiation source using the radiation method, and its calculation formula is:

[0087]

[0088] In the formula, T 实时 is the real-time thermodynamic temperature of the radiation source, and S 表 is the surface area of the slender cylinder.

[0089] Step S4.4: Calculate the secondary radiation of the quartz lamp tube wall and the reflection of the reflective coating by superposition according to the engineering experience formula; calculate the secondary radiation of the quartz lamp tube wall and the reflection of the reflective coating by superposition according to the engineering experience formula, and its calculation formula is:

[0090] T 载荷 = η·T 实时

[0091] In the formula, T 载荷For the boundary load parameters of the quartz lamp thermal loading simulation, η is the engineering experience parameter that superimposes and calculates the secondary radiation of the quartz lamp tube wall and the reflection of the reflective coating. The empirical value range of the engineering experience parameter η is between 1.189 and 1.25. The stronger the secondary radiation of the tube wall and the reflection of the reflective coating, the larger the value of η.

[0092] Step S4.5: Determine the thermal load boundary parameters of the quartz lamp thermal loading simulation.

[0093] Example 2:

[0094] Example 2 is a preferred example of Example 1 to more specifically illustrate the present invention.

[0095] The present invention also provides an engineering simulation system for the thermal loading of a quartz lamp in a structural thermal test. The system includes the following modules:

[0096] Module M1: According to the size specifications of the quartz lamp used in the structural thermal test;

[0097] Module M2: Use finite element analysis software to establish an engineered simplified model of the quartz lamp;

[0098] Module M3: Input thermal load boundary conditions and correct the simulation model accuracy in combination with physical test data;

[0099] Module M4: Solve and perform an engineered simulation on the quartz lamp thermal loading process to obtain simulation results;

[0100] The module M2 includes the following modules:

[0101] Module M2.1: Consider the radiation source of the quartz lamp during modeling and simplify it as a slender cylinder;

[0102] Module M2.2: During calculation, integrate the secondary radiation of the tube wall and the reflection of the reflective coating into a proportionality coefficient and superimpose it on the boundary load of the radiation source to obtain an engineered simplified model of the quartz lamp;

[0103] In the module M3, when correcting the simulation accuracy in combination with physical tests, the required physical test data includes the control output of the test control system during the real-time operation of the quartz lamp and the heat flux density measurement value, and correct the engineering experience parameters in the solution of the thermal load boundary conditions;

[0104] The module M4 includes the following modules:

[0105] Module M4.1: Calculate the real-time operating voltage of the quartz lamp according to the control output of the physical quartz lamp thermal test control system;

[0106] Module M4.2: Calculate the real-time power of the quartz lamp according to the engineering experience formula;

[0107] Module M4.3: Calculate the real-time temperature of the radiation source using the radiation method;

[0108] Module M4.4: Calculate the secondary radiation of the quartz lamp tube wall and the reflection of the reflective coating by superposition according to the engineering experience formula;

[0109] Module M4.5: Determine the thermal load boundary parameters for the thermal loading simulation of the quartz lamp;

[0110] The said module M4.1 calculates the real-time working voltage of the quartz lamp according to the control output of the physical quartz lamp thermal test control system. The control output range of the control system is 0 - 20mv, and the working voltage range of the quartz lamp is 0 - 380V. The conversion relationship between the two is linearly corresponding, and its calculation formula is:

[0111] U 实时 =19×K 实时

[0112] In the formula, U 实时 is the real-time working voltage of the quartz lamp, and K 实时 is the real-time output of the control system;

[0113] The said module M4.2 calculates the real-time power of the quartz lamp according to the engineering experience formula, and its calculation formula is:

[0114]

[0115] In the formula, P 实时 is the real-time power of the quartz lamp, P 额定 is the rated power of the quartz lamp, U 实时 is the real-time working voltage of the quartz lamp, U 额定 is the rated working voltage of the quartz lamp, and t is the engineering experience parameter;

[0116] The said module M4.3 calculates the real-time temperature of the radiation source using the radiation method, and its calculation formula is:

[0117]

[0118] In the formula, T 实时 is the real-time thermodynamic temperature of the radiation source, and S 表 is the surface area of the slender cylinder;

[0119] The said module M4.4 calculates the secondary radiation of the quartz lamp tube wall and the reflection of the reflective coating by superposition according to the engineering experience formula, and its calculation formula is:

[0120] T 载荷 =η·T 实时

[0121] In the formula, T 载荷is the boundary load parameter for the thermal loading simulation of the quartz lamp, and η is the engineering experience parameter that superimposes and calculates the secondary radiation of the quartz lamp tube wall and the reflection of the reflective coating.

[0122] Example 3:

[0123] Example 3 is a preferred example of Example 1 to more specifically illustrate the present invention.

[0124] The present invention provides an engineering simulation method for the thermal loading of a quartz lamp in a structural thermal test, which is used for the engineering simulation of the thermal loading of a quartz lamp in a structural thermal test.

[0125] As Figure 1 shown, it is the flow chart of the present invention. According to the size specifications of the quartz lamp used in the structural thermal test, an engineering simplified model of the quartz lamp is established using finite element analysis software. The thermal load boundary conditions are input and the simulation model accuracy is corrected by combining physical test data, and the solution is obtained to realize the engineering simulation of the thermal loading process of the quartz lamp and obtain the simulation results.

[0126] The method for establishing the engineering simplified model of the quartz lamp is as follows: When modeling, only the most important radiation source (filament) of the quartz lamp is considered and it is simplified as a slender cylinder; the lamp tube wall and the reflective coating are not modeled, and during the calculation, the secondary radiation of the tube wall and the reflection of the reflective coating are integrated into a proportionality coefficient and superimposed on the boundary load of the filament; parts such as the porcelain head and the wire support that basically do not participate in the thermal calculation are ignored.

[0127] In the method for establishing the engineering simplified model of the quartz lamp, the quartz lamp filament is modeled as a slender cylinder. The cross-sectional diameter of the slender cylinder is the spiral diameter of the quartz lamp filament, and the length of the slender cylinder is the effective working heating length of the quartz lamp.

[0128] Combining physical tests to correct the simulation accuracy, the required physical test data includes the control output of the test control system during the real-time operation of the quartz lamp, the measured value of the heat flux density, etc., which are used to correct the engineering experience parameters in the solution of the thermal load boundary conditions.

[0129] The solution of the thermal load boundary conditions for the thermal loading simulation of the quartz lamp includes the following steps:

[0130] ① Calculate the real-time working voltage of the quartz lamp according to the control output of the physical quartz lamp thermal test control system;

[0131] ② Calculate the real-time power of the quartz lamp according to the engineering experience formula;

[0132] ③ Use the radiation method to calculate the real-time temperature of the quartz lamp filament;

[0133] ④ Superimpose and calculate the secondary radiation of the quartz lamp tube wall and the reflection of the reflective coating according to the engineering experience formula;

[0134] ⑤Determine the thermal load boundary parameters (temperature boundary) for the thermal loading simulation of the quartz lamp;

[0135] For the solution steps of the thermal load boundary conditions, in the first step, calculate the real-time working voltage of the quartz lamp according to the control output of the physical quartz lamp thermal test control system. The control output range of the control system is 0 - 20 mV, and the working voltage range of the quartz lamp is 0 - 380 V. The conversion relationship between the two is linearly corresponding, and its calculation formula is:

[0136] U 实时 = 19×K 实时

[0137] In the formula, U 实时 is the real-time working voltage of the quartz lamp, and K 实时 is the real-time output of the control system.

[0138] For the solution steps of the thermal load boundary conditions, in the second step, calculate the real-time power of the quartz lamp according to the engineering empirical formula. The calculation formula is:

[0139]

[0140] In the formula, P 实时 is the real-time power of the quartz lamp, P 额定 is the rated power of the quartz lamp, U 实时 is the real-time working voltage of the quartz lamp, U 额定 is the rated working voltage of the quartz lamp, and t is the engineering empirical parameter. The empirical value range of the engineering empirical parameter t is between 1.5 - 1.7. The parameter t varies with different specifications and combination methods of the quartz lamp. The more lamps there are and the denser the arrangement, the larger the value of t.

[0141] For the solution steps of the thermal load boundary conditions, in the third step, calculate the real-time temperature of the quartz lamp filament using the radiation method. The calculation formula is:

[0142]

[0143] In the formula, T 实时 is the real-time thermodynamic temperature of the quartz lamp filament, and S 表 is the surface area of the slender cylinder.

[0144] For the solution steps of the thermal load boundary conditions, in the fourth step, calculate the secondary radiation of the quartz lamp tube wall and the reflection of the reflective coating according to the engineering empirical formula. The calculation formula is:

[0145] T 载荷 = η·T 实时

[0146] In the formula, T 载荷For the boundary load parameters (temperature boundary) of the quartz lamp thermal loading simulation, η is an engineering experience parameter that superimposes the secondary radiation of the quartz lamp tube wall and the reflection of the reflective coating. The empirical value range of the engineering experience parameter η is between 1.189 and 1.25. The stronger the secondary radiation of the tube wall and the reflection of the reflective coating, the larger the value of η.

[0147] The quartz lamp array contains 30 quartz lamps in total, with a filament spiral diameter of 3 mm, an effective heating length of 450 mm for a single lamp, a rated power of 9 kW, and a filament spacing of 17 mm.

[0148] The data parameters collected in real time during the experiment are as Figure 2 shown. The monitoring position of the heat flux density is the center position of the projection plane of the quartz lamp array 80 mm away from the lamp array.

[0149] The engineering experience parameter t takes a value of 1.7, and η takes a value of 1.23.

[0150] The simulation calculation results are as Figure 3 shown. Among them, the overall change trend of the simulation data is the same as that of the test data, and the error is overall controlled within the allowable range of accuracy.

[0151] The solution of the thermal load boundary conditions for the quartz lamp thermal loading simulation includes the following steps: ① Calculate the real-time working voltage of the quartz lamp according to the control output of the physical quartz lamp thermal test control system; ② Calculate the real-time power of the quartz lamp according to the engineering experience formula; ③ Calculate the real-time temperature of the quartz lamp filament using the radiation method; ④ Superimpose and calculate the secondary radiation of the quartz lamp tube wall and the reflection of the reflective coating according to the engineering experience formula; ⑤ Preliminarily determine the boundary load parameters (temperature boundary) of the quartz lamp thermal loading simulation.

[0152] The technical feature of the present invention is to provide an engineering simulation method for the thermal loading of a quartz lamp in a structural thermal test, which provides a fast and high-precision engineering simulation method for simulating the thermal loading characteristics of a quartz lamp in a structural thermal test, greatly reducing the work difficulty of the refined modeling and simulation of the quartz lamp and effectively improving the simulation accuracy. The method of this patent is based on the real-time output parameters of the physical test as the input of the simulation work, and the simulation results can truly and effectively predict the results of the physical test. This invention patent is applicable to the simulation of various quartz lamp thermal tests and has a positive promoting effect on improving the structural thermal test ability.

[0153] Those skilled in the art can understand this embodiment as a more specific description of Embodiment 1 and Embodiment 2.

[0154] Those skilled in the art know that, in addition to implementing the system and its various devices, modules, and units provided by the present invention in the form of pure computer-readable program code, the method steps can be logically programmed to enable the system and its various devices, modules, and units provided by the present invention to be implemented in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers, etc., to achieve the same functions. Therefore, the system and its various devices, modules, and units provided by the present invention can be considered as a kind of hardware component, and the devices, modules, and units included therein for implementing various functions can also be regarded as the structures within the hardware component; the devices, modules, and units for implementing various functions can also be regarded as being both software modules for implementing the method and the structures within the hardware component.

[0155] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. Without conflict, the embodiments of the present application and the features in the embodiments can be combined arbitrarily with each other.

Claims

1. An engineering simulation method for quartz lamp thermal loading in structural thermal tests, characterized in that, The method includes the following steps: Step S1: Determine the size specifications of the quartz lamp according to the structural thermal test; Step S2: Establish an engineered simplified model of the quartz lamp using finite element analysis software; Step S3: Input the thermal load boundary conditions and correct the simulation model accuracy in combination with physical test data; Step S4: Solve and conduct an engineered simulation of the thermal loading process of the quartz lamp to obtain the simulation results; The said Step S2 includes the following steps: Step S2.1: Consider the radiation source of the quartz lamp during modeling and simplify it into a slender cylinder; Step S2.2: During calculation, integrate the secondary radiation of the tube wall and the reflection of the reflective coating into a proportionality coefficient and superimpose it on the boundary load of the radiation source to obtain the engineered simplified model of the quartz lamp.

2. The engineering simulation method for thermal loading of a structural thermal test quartz lamp according to claim 1, wherein The radiation source of the said quartz lamp is modeled as a slender cylinder. The cross-sectional diameter of the slender cylinder is the spiral diameter of the radiation source, and the length of the slender cylinder is the effective working heating length of the radiation source.

3. The engineering simulation method for thermal loading of a structural thermal test quartz lamp according to claim 1, characterized in that, In the said Step S3, when correcting the simulation accuracy in combination with physical tests, the required physical test data includes the control output of the test control system during the real-time operation of the quartz lamp and the measured value of the heat flux density, and correct the engineering experience parameters in the solution of the thermal load boundary conditions.

4. The engineering simulation method for thermal loading of a structural thermal test quartz lamp according to claim 1, wherein The said Step S4 includes the following steps: Step S4.1: Calculate the real-time working voltage of the quartz lamp according to the control output of the physical quartz lamp thermal test control system; Step S4.2: Calculate the real-time power of the quartz lamp according to the engineering experience formula; Step S4.3: Calculate the real-time temperature of the radiation source using the radiation method; Step S4.4: Calculate the secondary radiation of the quartz lamp tube wall and the reflection of the reflective coating by superposition according to the engineering experience formula; Step S4.5: Determine the thermal load boundary parameters for the thermal loading simulation of the quartz lamp.

5. The engineering simulation method for thermal loading of a structural thermal test quartz lamp according to claim 4, characterized in that In the said Step S4.1, calculate the real-time working voltage of the quartz lamp according to the control output of the physical quartz lamp thermal test control system. The control output range of the control system is 0 - 20mv, and the working voltage range of the quartz lamp is 0 - 380V. The conversion relationship between the two is linearly corresponding, and its calculation formula is: U 实时 = 19 × K 实时 Where U 实时 is the real-time working voltage of the quartz lamp, and K 实时 is the real-time output of the control system.

6. The engineering simulation method for thermal loading of a structural thermal test quartz lamp according to claim 4, wherein, In the said Step S4.2, calculate the real-time power of the quartz lamp according to the engineering experience formula, and its calculation formula is: Wherein, P 实时 is the real-time power of the quartz lamp, and P 额定 is the rated power of the quartz lamp. U 实时 is the real-time operating voltage of the quartz lamp, and U 额定 is the rated operating voltage of the quartz lamp. t is an engineering experience parameter.

7. The engineering simulation method for thermal loading of a structural thermal test quartz lamp according to claim 6, wherein In the said Step S4.3, calculate the real-time temperature of the radiation source using the radiation method, and its calculation formula is: where, T 实时 is the real-time thermodynamic temperature of the radiation source, and S 表 is the surface area of the slender cylinder.

8. The engineering simulation method for thermal loading of a structural thermal test quartz lamp according to claim 7, characterized in that In the said Step S4.4, calculate the secondary radiation of the quartz lamp tube wall and the reflection of the reflective coating by superposition according to the engineering experience formula, and its calculation formula is: T 载荷 = η·T 实时 where T 载荷 is the boundary load parameter for the thermal loading simulation of the quartz lamp, and η is the engineering experience parameter for superimposing and calculating the secondary radiation of the quartz lamp tube wall and the reflection of the reflective coating.

9. An engineering simulation system for quartz lamp thermal loading in structural thermal tests, characterized in that, The said system includes the following modules: Module M1: Determine the size specifications of the quartz lamp according to the structural thermal test; Module M2: Establish an engineered simplified model of the quartz lamp using finite element analysis software; Module M3: Input the thermal load boundary conditions and correct the simulation model accuracy in combination with physical test data; Module M4: Solve and conduct an engineered simulation of the thermal loading process of the quartz lamp to obtain the simulation results; The said Module M2 includes the following modules: Module M2.1: Consider the radiation source of the quartz lamp during modeling and simplify it into a slender cylinder; Module M2.2: During calculation, integrate the secondary radiation of the tube wall and the reflection of the reflective coating into a proportionality coefficient and superimpose it on the boundary load of the radiation source to obtain the engineered simplified model of the quartz lamp. In the module M3, the simulation accuracy is corrected by combining physical tests. The physical test data required include the control output of the test control system during the real-time operation of the quartz lamp and the heat flux density measurement value, and the engineering experience parameters in the solution of the thermal load boundary conditions are corrected. The module M4 includes the following modules: Module M4.1: Calculate the real-time working voltage of the quartz lamp according to the control output of the physical quartz lamp thermal test control system. Module M4.2: Calculate the real-time power of the quartz lamp according to the engineering experience formula. Module M4.3: Calculate the real-time temperature of the radiation source using the radiation method. Module M4.4: Calculate the secondary radiation of the quartz lamp tube wall and the reflection of the reflection coating by superposition according to the engineering experience formula. Module M4.5: Determine the thermal load boundary parameters for the quartz lamp thermal loading simulation. The module M4.1 calculates the real-time working voltage of the quartz lamp according to the control output of the physical quartz lamp thermal test control system. The control output range of the control system is 0 - 20 mv, and the working voltage range of the quartz lamp is 0 - 380 V. The conversion relationship between the two is linearly corresponding, and its calculation formula is: U 实时 = 19 × K 实时 Where U 实时 is the real-time working voltage of the quartz lamp, and K 实时 is the real-time output of the control system; The module M4.2 calculates the real-time power of the quartz lamp according to the engineering experience formula, and its calculation formula is: Wherein, P 实时 is the real-time power of the quartz lamp, and P 额定 is the rated power of the quartz lamp, U 实时 is the real-time working voltage of the quartz lamp, and U 额定 is the rated working voltage of the quartz lamp, and t is an engineering experience parameter; The module M4.3 calculates the real-time temperature of the radiation source using the radiation method, and its calculation formula is: Where T 实时 is the real-time thermodynamic temperature of the radiation source, and S 表 is the surface area of the slender cylinder; The module M4.4 calculates the secondary radiation of the quartz lamp tube wall and the reflection of the reflection coating by superposition according to the engineering experience formula, and its calculation formula is: T 载荷 = η · T 实时 where T 载荷 is the boundary load parameter for the thermal loading simulation of the quartz lamp, and η is the engineering experience parameter for superimposing and calculating the secondary radiation of the quartz lamp tube wall and the reflection of the reflective coating.

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