Simulation method, device and equipment for fluid-solid-heat coupling effect of high-dynamic platform

Abstract

The invention provides a simulation method, device and equipment for a fluid-solid-heat coupling effect of a high-dynamic platform. The method comprises the steps of obtaining a simulation data set generated based on simulation software; the simulation data are full-link imaging data corresponding to an infrared detection system in the high-dynamic platform and transient deformation data corresponding to a fairing in the high-dynamic platform; performing data analysis processing on the simulation data set to obtain a simulation analysis data set; using the simulation analysis data set to construct a ray tracing calculation framework used for ray tracing; performing reverse ray tracing under a ray tracing calculation framework to obtain image space rays; the image light is light which can be transmitted to a sensor in the ray tracing calculation framework; and carrying out infrared radiation forward recursion calculation by using image space light to obtain the energy radiation magnitude of the sensor. Through the above calculation mode, the requirements for experimental conditions are reduced, the calculation efficiency is improved, the calculation cost is saved, and the accuracy of energy radiation corresponding to the sensor is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of high-speed flight optical simulation, and particularly relates to a simulation method, device and equipment for fluid-structure-thermal coupling effects of a high-dynamic platform. Background Art

[0002] With the rapid development of aerospace technology, the flight missions of high-speed aircraft in the dense atmosphere are increasing day by day. Under these extreme conditions, the optical systems carried by the aircraft face multiple challenges such as complex aero-optical effects, aero-thermal effects, and fairing deformation. The combined action of these effects causes light to deflect, jitter and have an optical path difference during transmission, thereby affecting the imaging quality of the optical system. Therefore, accurately evaluating and predicting the imaging effect of the optical system of a high-speed aircraft during flight is of great significance for improving the reliability and success rate of flight missions. However, there are still many technical problems in the current research on this complex process that need to be solved urgently.

[0003] To solve the above problems, researchers have adopted a variety of research methods. On the one hand, experimental research uses high-precision equipment such as laser interference devices, supersonic wind tunnels, and high-frequency CCD cameras to achieve accurate measurement of the light transmission process of the aircraft during high-speed movement. Although this method can provide relatively accurate experimental data, the required conditions are harsh, the equipment is expensive, and the experiment takes a long time, which limits its wide application. On the other hand, computer simulation technology has become a current research hotspot due to its low cost and high efficiency. However, most of the existing computer simulation technologies adopt a one-way coupling calculation method. Although the calculation speed is fast, there are defects in calculation accuracy when dealing with the interaction of complex aero-optical effects, aero-thermal effects, and fairing deformation. In addition, most simulation studies only focus on a certain link in the radiation transmission process and lack comprehensive consideration of the entire radiation transmission process.

[0004] In summary, the current research on the imaging effect of the optical system of a high-speed aircraft during flight has the following main problems: First, the experimental research method is costly and time-consuming, which limits its popularization in practical applications; Second, although the computer simulation technology has low cost and high efficiency, the one-way coupling calculation method leads to insufficient calculation accuracy and it is difficult to accurately reflect the interaction of complex physical processes; Third, most of the existing technologies only focus on a certain link in the radiation transmission process and lack comprehensive consideration of the entire radiation transmission process, resulting in inaccurate prediction of the imaging effect. Therefore, how to develop an efficient and accurate research method has become a technical problem to be solved urgently. Summary of the Invention

[0005] In order to solve the above problems existing in the prior art, the present invention provides a simulation method, device and equipment for fluid-structure-thermal coupling effects of a high-dynamic platform.

[0006] The technical problem to be solved by the present invention is achieved through the following technical solutions:

[0007] In a first aspect, the present invention provides a simulation method for the fluid-structure-thermal coupling effect of a high-dynamic platform, including:

[0008] Obtain a simulation data set generated based on simulation software; the simulation data is the full-link imaging data corresponding to the infrared detection system in the high-dynamic platform and the transient deformation data corresponding to the fairing in the high-dynamic platform;

[0009] Perform data analysis and processing on the simulation data set to obtain a simulation analysis data set;

[0010] Use the simulation analysis data set to construct a ray tracing calculation framework for performing ray tracing;

[0011] Perform reverse ray tracing under the ray tracing calculation framework to obtain image-side rays; the image-side rays are the rays that can be transmitted to the sensors in the ray tracing calculation framework;

[0012] Use the image-side rays to perform forward recursive calculation of infrared radiation to obtain the energy radiation magnitudes of all sensors.

[0013] Optionally, the simulation data set includes: fluid-structure-thermal data, thermo-solid coupled lens data, optical system data, sensor data, and external field infrared radiation data;

[0014] The fluid-structure-thermal data includes: temperature data of the flow field region, density data of the flow field region, pressure data of the flow field region, temperature data of the fairing solid region, and deformation data of the fairing solid region;

[0015] The thermo-solid coupled lens data includes: thermal field data of the lens elements in the high-dynamic platform, stress data of the lens elements, and deformation data of the lens elements;

[0016] The optical system data includes: placement positions of all lenses in the optical system of the high-dynamic platform, rotation angles of the lenses, shapes of the lenses, and materials of the lenses;

[0017] The sensor data includes: unit size of the sensor, spatial resolution of the sensor, and field of view of the sensor;

[0018] The external field infrared radiation data includes: infrared radiation data of the target and infrared radiation data of the background.

[0019] Optionally, the simulation analysis data set includes: fluid-structure-thermal analysis data, thermo-solid coupled lens analysis data, optical system analysis data, sensor analysis data, and external field infrared radiation analysis data;

[0020] The fluid-structure-thermal analysis data includes: the first refractive index field data, the first aerodynamic thermal radiation field, the second aerodynamic thermal radiation field, and the first coordinate data.

[0021] Optionally, perform data analysis processing on the simulation data set to obtain the simulation analysis data set including:

[0022] When the simulation data set is fluid-structure-thermal data, based on the temperature data of the flow field region, the density data of the flow field region, and the temperature data of the fairing solid region, use the Gladstone-Dale formula to generate the first refractive index field data including the flow field region and the fairing solid region;

[0023] Based on the temperature data of the flow field region and the pressure data of the flow field region, use the HITRAN standard state gas spectral line database to obtain the first aerodynamic thermal radiation field corresponding to the flow field region;

[0024] Use the temperature data of the fairing solid region and the fairing material to generate the second aerodynamic thermal radiation field of the fairing solid region by using the Planck formula;

[0025] Perform coordinate transformation processing on the deformation data of the fairing solid region to obtain the first coordinate data in the ray tracing calculation framework; the first coordinate data is the coordinate data of the flow field and the solid region in the ray tracing calculation framework; the ray tracing calculation framework is the calculation coordinate system of the high-dynamic platform after data analysis processing; the coordinate transformation processing includes coordinate translation processing and coordinate rotation processing.

[0026] Optionally, perform data analysis processing on the simulation data set to obtain the simulation analysis data set, including:

[0027] When the simulation data set is thermo-mechanical coupled lens data, according to the thermo-mechanical coupled lens data, use the Zernike polynomial for data fitting through the heat transfer principle to obtain the second refractive index field data corresponding to the lens element;

[0028] Perform coordinate transformation on the deformation data of the lens element in the thermo-mechanical coupled lens data in the ray tracing calculation framework to obtain the second coordinate data corresponding to the lens element;

[0029] Take the second refractive index field data and the second coordinate data together as the thermo-mechanical coupled lens analysis data.

[0030] Optionally, perform data analysis processing on the simulation data set to obtain the simulation analysis data set, including:

[0031] When the simulation data set is optical system data, perform coordinate transformation processing on the optical system data in the ray tracing calculation framework to obtain the optical system analysis data.

[0032] Optionally, perform data parsing processing on the simulation data set to obtain a simulation parsing data set, including:

[0033] When the simulation data set is sensor data, fit a simulation sensor under the ray tracing calculation framework based on the unit size of the sensor, the spatial resolution of the sensor, and the field of view of the sensor;

[0034] Use the data corresponding to the simulation sensor as the sensor parsing data.

[0035] In a second aspect, the present invention provides a simulation device for the fluid-structure-thermal coupling effect of a high-dynamic platform. The simulation device for the fluid-structure-thermal coupling effect of a high-dynamic platform includes: an acquisition unit, an analysis unit, a construction unit, a ray tracing unit, and a recursive processing unit;

[0036] The acquisition unit is configured to: acquire a simulation data set generated based on simulation software; the simulation data is the full-link imaging data corresponding to the infrared detection system in the high-dynamic platform and the transient deformation data corresponding to the fairing in the high-dynamic platform;

[0037] The analysis unit is configured to: perform data parsing processing on the simulation data set to obtain a simulation parsing data set;

[0038] The construction unit is configured to: use the simulation parsing data set to construct a ray tracing calculation framework for performing ray tracing;

[0039] The ray tracing unit is configured to: perform reverse ray tracing under the ray tracing calculation framework to obtain image-side rays; the image-side rays are rays that can be transmitted to the sensors in the ray tracing calculation framework;

[0040] The recursive processing unit is configured to: perform forward recursive calculation of infrared radiation using the image-side rays to obtain the energy radiation magnitudes of all sensors in the high-dynamic platform.

[0041] In a third aspect, the present invention provides a simulation device for the fluid-structure-thermal coupling effect of a high-dynamic platform, including: a processor, a storage medium, and a bus. The storage medium stores machine-readable instructions executable by the processor. When the simulation device for the fluid-structure-thermal coupling effect of the high-dynamic platform runs, the processor communicates with the storage medium through the bus, and the processor executes the machine-readable instructions to perform the steps of the simulation method for the fluid-structure-thermal coupling effect of the high-dynamic platform as described in the first aspect above.

[0042] The present invention provides a simulation method, device and equipment for the fluid-structure-thermal coupling effect of a high-dynamic platform. Among them, a simulation method for the fluid-structure-thermal coupling effect of a high-dynamic platform includes: obtaining a simulation data set generated based on simulation software; the simulation data is the full-link imaging data corresponding to the infrared detection system in the high-dynamic platform and the transient deformation data corresponding to the fairing in the high-dynamic platform; performing data parsing processing on the simulation data set to obtain a simulation parsing data set; using the simulation parsing data set to construct a ray tracing calculation framework for performing ray tracing; performing reverse ray tracing under the ray tracing calculation framework to obtain image-side rays; the image-side rays are the rays that can be transmitted to the sensors in the ray tracing calculation framework; using the image-side rays to perform forward recursive calculation of infrared radiation to obtain the energy radiation magnitudes of all sensors. In the present invention, since data calculation and simulation processing are carried out with the aid of a simulation calculation tool, compared with experimental research that requires a variety of high-precision devices, the simulation calculation tool reduces the requirements for experimental conditions, improves the calculation efficiency, and saves the calculation cost. At the same time, since the simulation data set of the present invention includes the full-link imaging data corresponding to the infrared detection system in the high-dynamic platform, that is, the two-way coupling analysis of light-thermal-force is realized, the comprehensive consideration of the entire radiation transmission process is realized, the imaging quality of the optical system is improved, and further the accuracy of the energy radiation calculation corresponding to all sensors is improved.

[0043] The following will further elaborate on the present invention in conjunction with the drawings and embodiments. Description of the Drawings

[0044] Figure 1 It is a schematic flowchart of a simulation method for the fluid-structure-thermal coupling effect of a high-dynamic platform provided by an embodiment of the present invention;

[0045] Figure 2 Exemplarily shows the infrared imaging full-link process diagram after adding the aerodynamic heat effect;

[0046] Figure 3 Exemplarily shows the full-link process diagram of ray transmission under the ray tracing calculation framework;

[0047] Figure 4 Exemplarily shows the schematic diagram of the influence process of the imaging result due to the heat of the thermosetting lens under the ray tracing calculation framework;

[0048] Figure 5 Exemplarily shows the structural diagram of the optical system after parsing;

[0049] Figure 6 It is a schematic structural diagram of a simulation device for the fluid-structure-thermal coupling effect of a high-dynamic platform provided by an embodiment of the present invention;

[0050] Figure 7Schematic diagram of the structure of a simulation device for the fluid-structure-thermal coupling effect of a high-dynamic platform provided by an embodiment of the present invention. Detailed implementation manners

[0051] The present invention will be further described in detail below with reference to specific embodiments, but the implementation manners of the present invention are not limited thereto.

[0052] In order to improve the calculation efficiency, save the calculation cost and improve the accuracy of the energy radiation corresponding to all sensors, an embodiment of the present invention provides a simulation method for the fluid-structure-thermal coupling effect of a high-dynamic platform. Figure 1 Schematic diagram of the process of a simulation method for the fluid-structure-thermal coupling effect of a high-dynamic platform provided by an embodiment of the present invention. As Figure 1 shown, the method includes:

[0053] S101. Obtain a simulation data set generated based on simulation software.

[0054] Among them, the simulation data is the full-link imaging data corresponding to the infrared detection system in the high-dynamic platform and the transient deformation data corresponding to the fairing in the high-dynamic platform.

[0055] Specifically, the simulation data set includes: fluid-structure-thermal data, thermo-solid coupling lens data, optical system data, sensor data, and external field infrared radiation data.

[0056] It should be noted that when the simulation data set is fluid-structure-thermal data, the corresponding simulation software can be CFD software; when the simulation data set is thermo-solid coupling lens data, the corresponding simulation software can be finite element simulation software (for example: ANSYS Workbench, Abaqus or SigFit); when the simulation data set is optical system data, the corresponding simulation software can be optical system design software ODS (Optics Design Software). When the simulation data set is sensor data, it can be obtained through the sensor parameters in the corresponding sensor simulation software. When the simulation data set is external field infrared radiation data, it can be obtained through infrared scene simulation software (for example: Vega, MTE-IR or MTE-IRScene).

[0057] The fluid-structure-thermal data includes: temperature data of the flow field region, density data of the flow field region, pressure data of the flow field region, temperature data of the fairing solid region, and deformation data of the fairing solid region;

[0058] The thermo-solid coupling lens data includes: thermal field data of the lens element in the high-dynamic platform, stress data of the lens element, and deformation data of the lens element;

[0059] Optical system data includes: the placement of all lenses in the optical system of the high dynamic platform, the rotation angle of the lenses, the shape of the lenses, and the material of the lenses;

[0060] Sensor data includes: the cell size of the sensor, the spatial resolution of the sensor, and the field of view of the sensor;

[0061] The external infrared radiation data includes: infrared radiation data of the target and infrared radiation data of the background.

[0062] It should be noted that the infrared radiation data emitted by the target and the background are transmitted to the outside of the fairing through the atmosphere. Infrared radiation scattering occurs in this process (scattering refers to the interaction between infrared radiation and particles in the atmosphere (such as aerosols, dust particles, etc.) during propagation, which changes the propagation direction of the infrared radiation information of the target and the background), resulting in changes in the intensity and distribution of the infrared radiation reaching the outside of the fairing.

[0063] Figure 2 The full-link process diagram of infrared imaging after adding aerodynamic thermal effect is shown as an example. Figure 2 As shown, the imaging process is specifically as follows:

[0064] (1) The target radiation signal is transmitted through the atmosphere to the front end of the shock layer, and the light from the target is obtained through the optical window of the infrared optical window. If it is a hemispherical fairing, the fairing itself serves as an optical window;

[0065] (2) After the target signal is superimposed on the aero-optical effects of the shock layer and the fairing, it is transmitted to the optical system inside the infrared optical window and is modulated by the optical system and focused on the focal plane of the infrared detector;

[0066] (3) After being detected by an infrared detector and processed by imaging electronics, an infrared image containing the target is output.

[0067] S102: Perform data analysis on the simulation data set to obtain a simulation analysis data set.

[0068] Specifically, the simulation analysis data set includes: fluid-solid thermal analysis data, thermal-solid coupling lens analysis data, optical system analysis data, sensor analysis data, and external field infrared radiation analysis data;

[0069] The fluid-solid thermal analysis data includes: first refractive index field data, first aerodynamic thermal radiation field data, second aerodynamic thermal radiation field data and first coordinate data.

[0070] S103, constructing a ray tracing calculation framework for performing ray tracing using the simulation analysis data set.

[0071] Optionally, performing data analysis on the simulation data set to obtain a simulation analysis data set includes:

[0072] When the simulation data set is fluid-structure-thermal data, based on the temperature data of the fluid field region, the density data of the fluid field region, and the temperature data of the fairing solid region, the Gladstone-Dale formula is used to generate the first refractive index field data including the fluid field region and the fairing solid region.

[0073] Based on the temperature data of the fluid field region and the pressure data of the fluid field region, using the HITRAN standard state gas spectral line database, the first aerodynamic thermal radiation field corresponding to the fluid field region is obtained.

[0074] Using the temperature data of the fairing solid region and the fairing material, the Planck formula is used to generate the second aerodynamic thermal radiation field of the fairing solid region.

[0075] Perform coordinate transformation processing on the deformation data of the fairing solid region to obtain the first coordinate data in the ray tracing calculation framework; the first coordinate data is the coordinate data of the fluid field and the solid region in the ray tracing calculation framework; the ray tracing calculation framework is the calculation coordinate system of the high-dynamic platform after data analysis processing; the coordinate transformation processing includes coordinate translation processing and coordinate rotation processing.

[0076] Optionally, perform data analysis processing on the simulation data set to obtain a simulation analysis data set, including:

[0077] When the simulation data set is thermo-solid coupled lens data, according to the thermo-solid coupled lens data, data fitting is performed using Zernike polynomials through the heat transfer principle to obtain the second refractive index field data corresponding to the lens element.

[0078] Perform coordinate transformation on the deformation data of the lens element in the thermo-solid coupled lens data in the ray tracing calculation framework to obtain the second coordinate data corresponding to the lens element.

[0079] Use the second refractive index field data and the second coordinate data together as the thermo-solid coupled lens analysis data.

[0080] It should be noted that in this embodiment, the ray tracing calculation framework is established with the center of the first optical surface in the infrared detector as the origin, the positive horizontal extension direction of the first surface from the origin as the positive X-axis direction, and the vertical upward direction as the positive Z-axis direction.

[0081] Optionally, perform data analysis processing on the simulation data set to obtain a simulation analysis data set, including:

[0082] When the simulation data set is optical system data, perform coordinate transformation processing on the optical system data in the ray tracing calculation framework to obtain optical system analysis data.

[0083] Optionally, perform data parsing on the simulation data set to obtain a simulation parsed data set, including:

[0084] When the simulation data set is sensor data, fit a simulation sensor under the ray tracing calculation framework based on the unit size of the sensor, the spatial resolution of the sensor, and the field of view of the sensor.

[0085] Use the data corresponding to the simulation sensor as the sensor parsed data.

[0086] In addition, the parsing of the external field infrared radiation data can specifically be to extract useful information from the original external field infrared radiation data and convert it into a more meaningful and easier-to-analyze data form to obtain the external field infrared radiation parsed data.

[0087] In addition, Figure 3 Exemplarily shows a full-link process diagram of light transmission under the ray tracing calculation framework. As Figure 3 shown, after the target background radiation light is emitted, it passes through the ambient atmosphere in sequence, through the hypersonic flow field generated outside the aircraft fairing, the fairing, the lens, and the optical system, and finally reaches the sensor to obtain an imaging result. Figure 4 Exemplarily shows a schematic diagram of the influence process of the thermosetting coupling lens heating on the imaging result under the ray tracing calculation framework. As Figure 4 shown, in the optical system, under the influence of the external heat source injection, after the thermosetting coupling lens is heated and its temperature rises, the thermal stray radiation, thermal deformation, and non-uniform refractive index distribution caused by heating in it cause the optical path to deflect and finally act on the external infrared detector, resulting in a change in the imaging result.

[0088] S104. Perform reverse ray tracing under the ray tracing calculation framework to obtain image-side rays; the image-side rays are the rays that can be transmitted to the sensor in the ray tracing calculation framework.

[0089] It should be noted that during forward ray tracing, a large number of rays cannot reach the sensor, resulting in a large waste of computing resources. Considering the principle of reversibility of the optical path, in this embodiment, by emitting rays from the focal plane and passing through multiple media such as the anti-refraction surface, the non-uniform lens interior, and the vacuum environment successively, the object-side angle information corresponding to the image-side rays and the change amount information of the radiation signal on the transmission path are obtained.

[0090] Figure 5 Exemplarily shows the structural diagram of the parsed optical system. As Figure 5 shown, after the optical system structure is parsed, it is arranged in sequence according to the structure under the ray tracing calculation framework, so it can be used under the ray tracing calculation framework.

[0091] S105. Use the image-space rays to perform forward recursive calculation of infrared radiation to obtain the energy radiation magnitudes of all sensors.

[0092] It should be noted that all the sensors in S105 specifically refer to all image-space sensors. An image-space sensor is a sensor located in the image space of the infrared detection system (i.e., the side where the image formed after the light passes through the infrared detection system is located). This type of sensor is used to receive and detect the light or radiation signal after being transmitted through the infrared detection system, so as to capture or record the information of the light emitted by the object after being imaged by the infrared detection system.

[0093] In this embodiment, after the single reverse ray tracing calculation is completed, the initial radiation signal in the object space can be used as the initial value, and the radiation variables can be recursively calculated step by step along the forward ray tracing path to obtain the radiation signal received by the image-space sensor. In this way, it is possible to directly determine the light rays in the object space that can reach the detector surface, and only calculating these light rays can reduce the calculation amount and improve the calculation speed and the accuracy of the calculation result.

[0094] The embodiment of the present invention provides a simulation method for the fluid-structure-thermal coupling effect of a high-dynamic platform, including: obtaining a simulation data set generated based on simulation software; the simulation data is the full-link imaging data corresponding to the infrared detection system in the high-dynamic platform and the transient deformation data corresponding to the radome in the high-dynamic platform; performing data parsing processing on the simulation data set to obtain a simulation parsing data set; using the simulation parsing data set to construct a ray tracing calculation framework for performing ray tracing; performing reverse ray tracing under the ray tracing calculation framework to obtain image-space rays; the image-space rays are the rays that can be transmitted to the sensors in the ray tracing calculation framework; using the image-space rays to perform forward recursive calculation of infrared radiation to obtain the energy radiation magnitudes of all sensors. In this embodiment, since data calculation and simulation processing are carried out with the help of a simulation calculation tool, compared with the experimental research that requires a variety of high-precision equipment, the simulation calculation tool reduces the requirements for experimental conditions, improves the calculation efficiency, and saves the calculation cost. At the same time, since the simulation data set of the present invention includes the full-link imaging data corresponding to the infrared detection system in the high-dynamic platform, that is, the two-way coupling analysis of light-thermal-force is realized, the comprehensive consideration of the entire radiation transmission process is realized, the imaging quality of the optical system is improved, and further the accuracy of the energy radiation calculation corresponding to all sensors is improved.

[0095] The method provided by the embodiment of the present invention can be applied to an electronic device. Specifically, the electronic device can be: a desktop computer, a portable computer, a smart mobile terminal, a server, etc., which are not limited in the embodiment of the present invention.

[0096] Based on the same inventive concept, the embodiment of the present invention also provides a simulation device for the fluid-structure-thermal coupling effect of a high-dynamic platform. Figure 6This is a schematic structural diagram of a simulation device for the fluid-structure-thermal coupling effect of a high-dynamic platform provided by an embodiment of the present invention. As Figure 6 shown, it includes: an acquisition unit 601, an analysis unit 602, a construction unit 603, a ray tracing unit 604, and a recursive processing unit 605;

[0097] The acquisition unit 601 is configured to: acquire a simulation data set generated based on simulation software; the simulation data is full-link imaging data corresponding to an infrared detection system in a high-dynamic platform and transient deformation data corresponding to a fairing in a high-dynamic platform;

[0098] The analysis unit 602 is configured to: perform data analysis processing on the simulation data set to obtain a simulation analysis data set;

[0099] The construction unit 603 is configured to: use the simulation analysis data set to construct a ray tracing calculation framework for performing ray tracing;

[0100] The ray tracing unit 604 is configured to: perform reverse ray tracing under the ray tracing calculation framework to obtain image-side rays; the image-side rays are rays that can be transmitted to the sensors in the ray tracing calculation framework;

[0101] The recursive processing unit 605 is configured to: perform forward recursive calculation of infrared radiation using the image-side rays to obtain the energy radiation magnitudes of all sensors in the high-dynamic platform.

[0102] Figure 7 This is a schematic structural diagram of a simulation device for the fluid-structure-thermal coupling effect of a high-dynamic platform provided by an embodiment of the present invention, including: a processor 710, a storage medium 720, and a bus 730. The storage medium 720 stores machine-readable instructions executable by the processor 710. When the simulation device for the fluid-structure-thermal coupling effect of the high-dynamic platform runs, the processor 710 communicates with the storage medium 720 through the bus 730, and the processor 710 executes the machine-readable instructions to perform the steps of the above method embodiment. The specific implementation manners and technical effects are similar and will not be elaborated here.

[0103] The storage medium may include a random access memory (Random Access Memory, RAM), and may also include a non-volatile memory (Non-Volatile Memory, NVM), such as at least one disk memory. Optionally, the storage medium may also be at least one storage device located far from the aforementioned processor.

[0104] The above-mentioned processor may be a general-purpose processor, including a Central Processing Unit (CPU), a Network Processor (NP), etc.; it may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0105] It should be noted that the terms "first", "second", etc. are used to distinguish similar objects and do not necessarily have to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present invention.

[0106] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0107] Although the present invention has been described in connection with various embodiments herein, however, in the process of implementing the claimed present invention, those skilled in the art can understand and implement other variations of the above-described disclosed embodiments by viewing the drawings and the disclosure. In the description of the present invention, the term "including" does not exclude other components or steps, the term "one" or "a" does not exclude a plurality of cases, and the meaning of "a plurality" is two or more, unless otherwise specifically defined. In addition, certain measures are described in different embodiments, but this does not mean that these measures cannot be combined to produce good results.

[0108] The above content is a further detailed description of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention pertains, without departing from the concept of the present invention, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the protection scope of the present invention.

Claims

1. A simulation method for fluid-solid thermal coupling effect of a high dynamic platform, characterized in that: include: Acquire a simulation data set generated based on simulation software; the simulation data is full-link imaging data corresponding to the infrared detection system in the high dynamic platform and transient deformation data corresponding to the fairing in the high dynamic platform; Performing data analysis on the simulation data set to obtain a simulation analysis data set; Using the simulation analysis data set to construct a ray tracing calculation framework for performing ray tracing; Performing reverse ray tracing in the ray tracing calculation framework to obtain image-side rays; the image-side rays are rays that can be transmitted to the sensor in the ray tracing calculation framework; The infrared radiation is forward recursively calculated using the image-side light to obtain the energy radiation magnitudes of all sensors.

2. The simulation method of fluid-solid thermal coupling effect of a high dynamic platform according to claim 1, characterized in that: The simulation data set includes: fluid-solid thermal data, thermal-solid coupling lens data, optical system data, sensor data and external field infrared radiation data; The fluid-solid thermal data includes: temperature data of the flow field area, density data of the flow field area, pressure data of the flow field area, temperature data of the fairing solid area, and deformation data of the fairing solid area; The thermosetting coupled lens data includes: thermal field data of lens elements in the high dynamic platform, stress data of lens elements and deformation data of lens elements; The optical system data includes: the placement positions of all lenses in the optical system of the high dynamic platform, the rotation angles of the lenses, the shapes of the lenses, and the materials of the lenses; The sensor data includes: a unit size of the sensor, a spatial resolution of the sensor, and a field of view of the sensor; The external field infrared radiation data includes: infrared radiation data of the target and infrared radiation data of the background.

3. The simulation method of fluid-solid thermal coupling effect of a high dynamic platform according to claim 2, characterized in that: The simulation analysis data set includes: fluid-solid thermal analysis data, thermal-solid coupling lens analysis data, optical system analysis data, sensor analysis data and external field infrared radiation analysis data; The fluid-solid thermal analysis data includes: first refractive index field data, first aerodynamic thermal radiation field, second aerodynamic thermal radiation field and first coordinate data.

4. The simulation method of fluid-solid thermal coupling effect of a high dynamic platform according to claim 3, characterized in that: The simulation data set is subjected to data analysis processing to obtain a simulation analysis data set including: When the simulation data set is fluid-solid thermal data, based on the temperature data of the flow field area, the density data of the flow field area and the temperature data of the fairing solid area, the Gladstone-Dale formula is used to generate first refractive index field data including the flow field area and the fairing solid area; Based on the temperature data of the flow field area and the pressure data of the flow field area, the first aerodynamic thermal radiation field corresponding to the flow field area is obtained by using the HITRAN standard state gas spectrum database; The second aerodynamic thermal radiation field of the solid area of ​​the fairing is generated by using the temperature data of the solid area of ​​the fairing and the material of the fairing using the Planck formula; The deformation data of the solid area of ​​the fairing is subjected to coordinate transformation processing to obtain the first coordinate data under the ray tracing calculation framework; the first coordinate data is the coordinate data of the flow field and the solid area under the ray tracing calculation framework; the ray tracing calculation framework is the calculation coordinate system of the high dynamic platform after data analysis processing; the coordinate transformation processing includes coordinate translation processing and coordinate rotation processing.

5. The simulation method of fluid-solid thermal coupling effect of a high dynamic platform according to claim 3, characterized in that: The performing data analysis processing on the simulation data set to obtain a simulation analysis data set includes: When the simulation data set is thermosetting coupled lens data, data fitting is performed using Zernike polynomials based on the thermosetting coupled lens data by using the heat transfer principle to obtain second refractive index field data corresponding to the lens element; Performing coordinate transformation on the deformation data of the lens element in the thermosetting coupling lens data under a ray tracing calculation framework to obtain second coordinate data corresponding to the lens element; The second refractive index field data and the second coordinate data are used together as analytical data of the thermosetting coupling lens.

6. The simulation method of fluid-solid thermal coupling effect of a high dynamic platform according to claim 3, characterized in that: The performing data analysis processing on the simulation data set to obtain a simulation analysis data set includes: When the simulation data set is optical system data, coordinate transformation processing is performed on the optical system data under a ray tracing calculation framework to obtain the optical system analytical data.

7. The simulation method of fluid-solid thermal coupling effect of a high dynamic platform according to claim 3, characterized in that: The performing data analysis processing on the simulation data set to obtain a simulation analysis data set includes: When the simulation data set is sensor data, a simulation sensor under a ray tracing calculation framework is fitted according to a unit size of the sensor, a spatial resolution of the sensor, and a field of view of the sensor; The data corresponding to the simulated sensor is used as the sensor analysis data.

8. A simulation device for fluid-solid thermal coupling effect of a high dynamic platform, characterized in that: The simulation device for fluid-solid thermal coupling effect of a high dynamic platform comprises: an acquisition unit, a parsing unit, a construction unit, a ray tracing unit and a recursive processing unit; The acquisition unit is used to: acquire a simulation data set generated based on simulation software; the simulation data is full-link imaging data corresponding to the infrared detection system in the high dynamic platform and transient deformation data corresponding to the fairing in the high dynamic platform; The parsing unit is used to: perform data parsing processing on the simulation data set to obtain a simulation parsing data set; The construction unit is used to: construct a ray tracing calculation framework for ray tracing using the simulation analysis data set; The ray tracing unit is used to: perform reverse ray tracing under the ray tracing calculation framework to obtain image-side rays; the image-side rays are rays that can be transmitted to the sensor in the ray tracing calculation framework; The recursive processing unit is used to: perform forward recursive calculation of infrared radiation using the image-side light to obtain the energy radiation magnitudes of all sensors in the high dynamic platform.

9. A simulation device for fluid-solid thermal coupling effect of a high dynamic platform, characterized in that: include: A processor, a storage medium and a bus, wherein the storage medium stores machine-readable instructions executable by the processor, and when the simulation device for the fluid-solid thermal coupling effect of a high dynamic platform is running, the processor communicates with the storage medium via the bus, and the processor executes the machine-readable instructions to perform the steps of the simulation method for the fluid-solid thermal coupling effect of a high dynamic platform as described in any one of claims 1 to 7.

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