Digital test run platform for liquid rocket engine

Abstract

The invention discloses a liquid rocket engine digital test run platform, relates to the technical field of liquid rockets, and aims to solve the problem that a liquid rocket engine digital test run system in the prior art cannot perform multi-dimensional simulation. The liquid rocket engine digital test run platform comprises a one-dimensional simulation module, a three-dimensional simulation module, a one-dimensional and three-dimensional joint simulation module and a virtual test run display module. The one-dimensional simulation module is used for performing one-dimensional simulation on the liquid rocket engine under different working conditions; the three-dimensional simulation module is used for performing three-dimensional simulation on a target part in the liquid rocket engine under different working conditions; the target component at least comprises a thrust chamber and a flow regulator; the one-dimensional and three-dimensional joint simulation module is used for performing one-dimensional and three-dimensional joint simulation on the target component; and the virtual test run display module is used for visually displaying the test run process of the liquid rocket engine. Therefore, the multi-dimensional comprehensive simulation of the digital test run of the liquid rocket engine can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid rockets, and in particular to a liquid rocket engine test platform. Background Art

[0002] Traditional liquid rocket engine testing requires a significant investment of manpower, material resources, and time, and carries certain risks. With the continuous development of digital twin and simulation technologies, virtual testing of liquid rocket engines through digital means has become a trend.

[0003] Currently, most simulation systems for liquid rocket engines in the field are limited to one-dimensional single simulation or three-dimensional single simulation, and it is difficult to achieve multi-dimensional comprehensive simulation of the test process. Summary of the Invention

[0004] The purpose of the present invention is to provide a liquid rocket engine test platform for realizing multi-dimensional and multi-fidelity comprehensive simulation of liquid rocket engines.

[0005] In order to achieve the above-mentioned object, the present invention provides a liquid rocket engine test platform, which has the following technical solutions:

[0006] The present invention provides a liquid rocket engine digital test platform, comprising:

[0007] One-dimensional simulation module, three-dimensional simulation module, one-dimensional and three-dimensional combined simulation module and virtual test run display module;

[0008] The one-dimensional simulation module is used to perform one-dimensional simulation of the liquid rocket engine under different working conditions;

[0009] The three-dimensional simulation module is used to perform three-dimensional simulation of target components in the liquid rocket engine under different working conditions; the target components include at least a thrust chamber and a flow regulator;

[0010] The one-dimensional and three-dimensional joint simulation module is used to perform one-dimensional and three-dimensional joint simulation on the target component;

[0011] The virtual test run display module is used to visually display the test run process of the liquid rocket engine.

[0012] Optionally, the one-dimensional simulation module includes at least a simulation tool unit and a one-dimensional system characteristic model unit;

[0013] The simulation tool unit is integrated with multiple simulation software including Simulink, MWorks or AMESim;

[0014] The one-dimensional system characteristic model unit is used to train a one-dimensional system characteristic model of the engine based on historical experimental data and system simulation data by adopting a dynamic order reduction training technology.

[0015] Optionally, the three-dimensional simulation module includes at least a three-dimensional feature model unit and a three-dimensional simulation tool unit;

[0016] The three-dimensional feature model unit is used to train the pressure field, velocity field and temperature field of the target component based on the POD reduction algorithm, and generate a plurality of corresponding three-dimensional feature models;

[0017] The three-dimensional simulation tool unit integrates multiple simulation software including ANSYS, Fluent and CFX; the three-dimensional simulation tool unit is used to perform flow, combustion and structural analysis on the target component based on three-dimensional CFD simulation technology.

[0018] Optionally, the liquid rocket engine digital test platform further includes a characteristic model module;

[0019] The characteristic model module at least integrates the one-dimensional system characteristic model of the engine and the three-dimensional characteristic model of the target component; the three-dimensional characteristic model at least includes a three-dimensional characteristic model of the flow regulator and a three-dimensional characteristic model of the thrust chamber.

[0020] Optionally, the one-dimensional and three-dimensional joint simulation module is specifically used to combine the one-dimensional system characteristic model of the engine and the three-dimensional characteristic model of the target component through data interaction and time synchronization.

[0021] Optionally, the virtual test run display module includes at least a virtual test run environment construction unit and a display unit;

[0022] The test environment construction unit is used to construct an interactive virtual test environment;

[0023] The display unit is used to visualize the interactive virtual test environment.

[0024] Optionally, the display unit includes at least an interactive interface and a multi-dimensional data visualization interface;

[0025] The interactive interface is used to receive user selections and determine a target component and multiple parameters of the target component based on the user selections; the interactive interface is integrated with at least a parameter setting page, a start test run button, a pause test run button, a continue test run button, and a video playback area;

[0026] The multidimensional data visualization interface is used to display the changes in multiple parameters of the target component, including temperature field, pressure field, velocity field, as well as the engine's one-dimensional system simulation model, one-dimensional simulation results, and engine key parameters; the engine key parameters include at least speed, thrust, and specific impulse.

[0027] Optionally, the interactive interface further includes a test process playback unit and a test process slow playback unit; the test process playback unit is used to play back the test process of the target component;

[0028] The test process slow-motion unit is used to change the refresh rate of 10 frames per second to a refresh rate of 40 frames per second or 80 frames per second to achieve a slow-motion function.

[0029] Optionally, the liquid rocket engine digital test platform also includes a software interface module; the software interface module is used to provide multiple software interfaces, and the multiple software interfaces support collaborative work with the control system corresponding to the liquid rocket engine.

[0030] Optionally, the liquid rocket engine digital test platform also includes a data layer, which is used to store model data.

[0031] Compared with the existing technology, the liquid rocket engine test platform provided by the present invention realizes multi-dimensional comprehensive simulation of liquid rocket engines by simultaneously integrating a one-dimensional simulation module, a three-dimensional simulation module, a one-dimensional and three-dimensional combined simulation module and a virtual test display module in the platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0033] Figure 1 A schematic structural diagram of a liquid rocket engine test platform provided in one embodiment of the present invention;

[0034] Figure 2 A schematic structural diagram of a virtual test run display module provided in one embodiment of the present invention.

[0035] Reference numerals:

[0036] 10-One-dimensional simulation module; 11-Simulation tool unit; 12-One-dimensional engine system simulation model; 13-One-dimensional engine system characteristic model; 20-Three-dimensional simulation module; 21-Three-dimensional simulation tool unit; 22-Thrust chamber three-dimensional characteristic model; 23-Flow regulator three-dimensional characteristic model; 30-One-dimensional and three-dimensional joint simulation module; 31-One-dimensional and three-dimensional joint simulation model of flow regulator; 32-One-dimensional and three-dimensional joint simulation model of thrust chamber; 40-Virtual test display module; 41-Virtual test environment construction unit; 42-Display unit. DETAILED DESCRIPTION

[0037] To facilitate a clear description of the technical solutions of the embodiments of the present invention, the words "first" and "second" are used in the embodiments of the present invention to distinguish between identical or similar items with substantially the same functions and effects. For example, the first threshold and the second threshold are merely used to distinguish between different thresholds and do not limit their order. Those skilled in the art will understand that the words "first" and "second" do not limit the quantity or execution order, and the words "first" and "second" do not necessarily mean different.

[0038] It should be noted that, in the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present invention should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0039] In the present invention, "at least one" means one or more, "more than one" means two or more, and "and / or" describes the association relationship between associated objects, indicating that three types of relationships can exist.

[0040] like Figure 1 As shown, an embodiment of the present invention provides a liquid rocket engine digital test platform, which may include:

[0041] One-dimensional simulation module 10, three-dimensional simulation module 20, one-dimensional and three-dimensional combined simulation module 30 and virtual test run display module 40;

[0042] The one-dimensional simulation module 10 is used to perform one-dimensional simulation of the liquid rocket engine under different working conditions;

[0043] The three-dimensional simulation module 20 is used to perform three-dimensional simulation of target components in a liquid rocket engine under different working conditions; the target components include at least a thrust chamber and a flow regulator;

[0044] The one-dimensional and three-dimensional joint simulation module 30 is used to perform one-dimensional and three-dimensional joint simulation on the target component;

[0045] The virtual test run display module 40 is used to visually display the test run process of the liquid rocket engine.

[0046] It is understood that in this embodiment of the present invention, the object of one-dimensional simulation is the entire liquid rocket engine, and the object of three-dimensional simulation is the target components within the liquid rocket engine, such as the thrust chamber and flow regulator. This embodiment of the present invention does not perform three-dimensional simulation of the liquid rocket engine. This is because the engine includes multiple core components, and three-dimensional simulation of liquid rocket engines is currently not feasible. Therefore, it is easier to simulate the liquid rocket engine by performing three-dimensional simulation of each target component.

[0047] One-dimensional and three-dimensional joint simulation, that is, simulating the liquid rocket engine and target components at the same time.

[0048] In the process of virtual testing of liquid rocket engines, related technologies include test platforms for simulating the one-dimensional system of the engine and test platforms for simulating the three-dimensional components of the engine, but there is no digital test platform that jointly simulates the one-dimensional and three-dimensional systems to achieve multi-dimensional integrated simulation. The implementation of the present invention aims to provide a platform that can perform one-dimensional and three-dimensional combined simulation and visualize the one-dimensional and three-dimensional combined simulation process, and realize multi-dimensional integrated simulation of liquid rocket engines by integrating a one-dimensional simulation module 10, a three-dimensional simulation module 20, a one-dimensional and three-dimensional combined simulation module 30 and a virtual test display module 40.

[0049] Optionally, the one-dimensional simulation module 10 includes at least a simulation tool unit 11 and a one-dimensional system characteristic model unit;

[0050] The simulation tool unit 11 integrates multiple simulation software including Simulink, MWorks or AMESim;

[0051] The one-dimensional system characteristic model unit is used to train the engine one-dimensional system characteristic model based on historical experimental data and system simulation data using dynamic order reduction training technology.

[0052] It can be understood that the characteristic model in the one-dimensional system characteristic model unit refers to a digital model generated by modeling and reducing the behavior of the physical system using software tools for creating digital twin models. The characteristic model can reduce the complexity of the system, thereby simplifying the simulation process and retaining the key characteristics or features of the original system as much as possible.

[0053] For example, based on historical experimental data and system simulation data, a liquid rocket engine is simulated using simulation software such as Simulink to generate a one-dimensional engine system simulation model 12. The engine one-dimensional system simulation model 12 is then reduced in order using a corresponding neural network order reduction model (e.g., a feedforward neural network) to obtain a one-dimensional engine system characteristic model 13. The engine one-dimensional system characteristic model 13 can simulate the dynamic changes in the main parameters of the engine (e.g., thrust, pressure, or flow). It should be noted that the engine one-dimensional system simulation model 12 before order reduction is generated in this process. Therefore, the engine one-dimensional system simulation model 12 is also integrated into the one-dimensional simulation module 10.

[0054] Optionally, the 3D simulation module 20 includes at least a 3D feature model unit and a 3D simulation tool unit 21;

[0055] Similarly, the feature model in the three-dimensional feature model unit also refers to a digital model generated by modeling and reducing the behavior of the physical system using software tools for creating digital twin models.

[0056] The 3D simulation tool unit 21 integrates multiple simulation software including ANSYS, Fluent and CFX; the 3D simulation tool unit 21 is used to perform flow, combustion and structural analysis on target components based on 3D CFD simulation technology;

[0057] The 3D feature model unit trains the target component's pressure, velocity, and temperature fields using the POD reduction algorithm and generates multiple corresponding 3D feature models. These models include pressure, velocity, and temperature field feature models. These 3D feature models reduce model computational complexity and simplify the simulation process.

[0058] For example, the CFX simulation software is used to simulate the pressure field in the flow regulator to generate a flow regulator pressure field simulation model, and the POD order reduction algorithm is used to reduce the order of the flow regulator pressure field simulation model to obtain a flow regulator pressure field characteristic model.

[0059] The flow regulator pressure field characteristic model can simulate the dynamic change process of the flow regulator's pressure.

[0060] For example, the temperature field in the flow regulator is simulated using CFX simulation software to generate a flow regulator temperature field simulation model, and the flow regulator temperature field simulation model is reduced in order using the POD order reduction algorithm to obtain a flow regulator temperature field characteristic model.

[0061] For example, the CFX simulation software is used to simulate the velocity field in the flow regulator to generate a flow regulator velocity field simulation model, and the POD order reduction algorithm is used to reduce the order of the flow regulator velocity field simulation model to obtain a flow regulator velocity field characteristic model.

[0062] Optionally, the liquid rocket engine digital test platform also includes a characteristic model module; the characteristic model module integrates at least a one-dimensional system characteristic model of the engine and a three-dimensional characteristic model of the target component; the three-dimensional characteristic model includes at least a three-dimensional characteristic model 23 of the flow regulator and a three-dimensional characteristic model 22 of the thrust chamber.

[0063] In this embodiment, the one-dimensional system characteristic model of the engine and the three-dimensional characteristic model of the target component are separately integrated into one module, which facilitates the selection and calling of each model feature during the virtual test run.

[0064] It should be noted that the 1D / 3D co-simulation module 30 is specifically used to combine the 1D engine system characteristic model with the 3D characteristic model of the target component through data exchange and time synchronization to achieve co-simulation. The 1D / 3D co-simulation module 30 includes 1D / 3D co-simulation models of the target component, such as the 1D / 3D co-simulation model 32 of the thrust chamber and the 1D / 3D co-simulation model 31 of the flow regulator.

[0065] The 1D / 3D co-simulation module 30 allows key parameters and variables, such as pressure, temperature, and flow rate, to be transferred between the 1D system feature model and the 3D feature model of the target component. These parameters can be updated in real time during the simulation, ensuring data consistency between the two models.

[0066] To ensure consistent simulation of the 1D system characteristic model and the 3D characteristic model of the target component, the 1D / 3D co-simulation module 30 implements a strict time synchronization mechanism. The 1D and 3D simulation step sizes can be the same or multiples of each other, but data must be exchanged at each synchronization point to maintain consistency.

[0067] Through a 1D / 3D co-simulation model, a 1D system characteristic model and a 3D characteristic model of the target component are tightly coupled to jointly complete complex simulation tasks. For example, in the simulation of an engine combustion chamber, the 1D model provides macroscopic parameters of the overall combustion process, while the 3D model simulates the gas flow and temperature distribution within the combustion chamber in detail. This co-simulation not only improves simulation accuracy but also provides strong support for design optimization.

[0068] Specifically, a simulation data interface of a three-dimensional feature model is provided in the one-dimensional and three-dimensional joint simulation module 30. The simulation analysis results of the one-dimensional system feature model of the engine are used as the simulation boundary input of the three-dimensional feature model of the target component, driving the three-dimensional feature model to perform simulation, thereby realizing the one-dimensional and three-dimensional joint simulation function.

[0069] Although there have been attempts to explore one-dimensional and three-dimensional joint simulation technology in other fields in the prior art, the two main methods are currently forced coupling and three-dimensional order reduction. Forced coupling is to use one-dimensional output as three-dimensional input to achieve one-dimensional driving three-dimensional. The disadvantage of this method is that the step size cannot be unified; the three-dimensional order reduction method is to reduce the three-dimensional to one-dimensional, and then achieve joint simulation. This method guarantees the step size, but cannot solve the problem of synchronization with the actual operation. In order to solve the above problems, the liquid rocket engine digital test platform provided by the embodiment of the present invention is designed with at least one-dimensional simulation module 10, three-dimensional simulation module 20, one-dimensional and three-dimensional joint simulation module 30 and virtual test display module 40. Among them, the one-dimensional system characteristic model unit in the one-dimensional simulation module 10 is used to adopt dynamic order reduction training technology to train a one-dimensional system characteristic model of the engine based on historical experimental data and system simulation data. The one-dimensional system characteristic model of the engine reduces the complexity of the system, simplifies the simulation process and retains the key characteristics or features of the original system as much as possible; the three-dimensional characteristic model unit in the three-dimensional simulation module 20 is used to train a one-dimensional system characteristic model of the engine based on POD The reduction algorithm trains the pressure field, velocity field, and temperature field of the target component and generates corresponding multiple three-dimensional feature models. These models reduce the model calculation complexity and simplify the simulation process. Finally, the one-dimensional and three-dimensional joint simulation module 30 transfers key parameters and variables between the one-dimensional system feature model and the three-dimensional feature model of the target component. The one-dimensional and three-dimensional joint simulation module 30 not only ensures the data consistency between the two models, but also implements a strict time synchronization mechanism, tightly coupling the one-dimensional and three-dimensional models to jointly complete complex simulation tasks, thereby improving the simulation speed and reliability of the liquid rocket engine virtual test.

[0070] Optionally, the virtual test drive display module 40 includes at least a virtual test drive environment construction unit 41 and a display unit 42;

[0071] The test environment construction unit is used to construct an interactive virtual test environment;

[0072] The display unit 42 is used to visualize the interactive virtual test driving environment.

[0073] Furthermore, the display unit 42 includes at least an interactive interface and a multi-dimensional data visualization interface;

[0074] The interactive interface is used to receive user selections and determine the target component and multiple parameters of the target component based on the user selections; the interactive interface is integrated with at least a parameter setting page, a start test run button, a pause test run button, a continue test run button, and a video playback area;

[0075] The multi-dimensional data visualization interface is used to display the changes in multiple parameters of the target component, including temperature field, pressure field, velocity field, as well as the engine one-dimensional system simulation model 12, one-dimensional simulation results, and engine key parameters; the engine key parameters may at least include speed, thrust and specific impulse.

[0076] For example, the multidimensional data visualization interface can display a one-dimensional simulation structure curve diagram of a one-dimensional system characteristic model of an engine.

[0077] For example, a multi-dimensional data visualization interface can show the movement process of a flow regulator slide valve.

[0078] For example, the multi-dimensional data visualization interface can also display the three-dimensional feature model 23 of the flow regulator.

[0079] For example, the multi-dimensional data visualization interface can also display the three-dimensional feature model 22 of the thrust chamber.

[0080] For example, the multi-dimensional data visualization interface can also display the dynamic velocity field cloud map and temperature field cloud map corresponding to the three-dimensional simulation results of the thrust chamber three-dimensional characteristic model 22.

[0081] In the liquid rocket engine digital test platform, the interactive interface also includes a test process playback unit and a test process slow playback unit; the test process playback unit is used to replay the test process of the target component;

[0082] The test process slow motion unit is used to change the refresh rate of 10 frames per second to 40 frames per second or 80 frames per second to achieve the slow motion function.

[0083] Specifically, the liquid rocket engine digital test platform also includes a software interface module; the software interface module is used to provide multiple software interfaces, and the multiple software interfaces support collaborative work with the control system corresponding to the liquid rocket engine.

[0084] It is understandable that the liquid rocket engine digital test platform also integrates a data layer, which integrates model data, such as historical one-dimensional simulation data, historical three-dimensional simulation data and other used data.

[0085] In a specific implementation of a liquid rocket engine digital simulation test run, users interact with the system using an interactive interface to view different simulation scenario data to meet their specific needs and decision-making process.

[0086] Users can use the interactive buttons on the system interface to set different simulation parameters.

[0087] The test platform’s multi-dimensional data visualization interface updates the data and graphics on the digital screen in real time to reflect changes made by the user.

[0088] Users can perform various interactive operations, such as zooming, dragging, and switching views, to gain a deeper understanding of engine performance and simulation results.

[0089] By interacting with the platform, users can better understand the engine's operating conditions, identify potential problems and take necessary measures.

[0090] The engine virtual test process is reflected in the interactive virtual test real-time reality display system. The virtual test operation is performed through the interactive virtual test real-time reality display system, and the operating status of each target component is displayed in real time on the multi-dimensional data visualization interface.

[0091] In another specific embodiment of a liquid rocket engine digital virtual test, the operation process of the engine virtual test may include the following steps:

[0092] 1) Click parameter setting, the parameter setting interface pops up, and you can modify the parameters;

[0093] 2) Click Start Test to trigger the one-dimensional and three-dimensional simulation of the flow regulator and thrust chamber, and display the simulation results and timeline at the same time;

[0094] 3) The 3D feature model is reduced and moved downward, and the actual engine test video playback area is displayed on the multi-dimensional data visualization interface of the test platform. The video plays along with the test run, and the flame of the engine 3D feature model is displayed;

[0095] 4) Click Pause Test Run to pause the simulation, timeline, and actual engine test run video.

[0096] 5) Click Continue Test Run to continue the simulation. The timeline will continue to load, the simulation results will continue, the actual engine test run video will continue, and the flame of the engine's three-dimensional characteristic model will be displayed.

[0097] 6) Click Stop Test Run to stop the simulation, the timeline is fully displayed, and the flame of the engine's 3D feature model is hidden;

[0098] 7) After the test is completed or stopped, the function of reviewing the engine virtual test process is enabled. The engine virtual test process review mainly replays the engine test that has just been completed. The review modes include slow playback, double speed playback, and progress control;

[0099] 8) Slow playback means reducing the test speed and re-running the engine virtual test from the beginning. No simulation calculation is required during the process, and the stored simulation calculation results are directly read. Since the engine test speed is relatively fast, slow playback allows users to see the details of the engine virtual test process;

[0100] 9) Double-speed playback refers to speeding up the test run and re-running the engine virtual test run just completed. During the process, there is no need to simulate the calculation again, and the stored simulation calculation results are directly read. Double-speed playback can quickly complete a test run and allow users to quickly understand the test run process;

[0101] 10) Progress control: the user can directly control the playback progress bar through the playback progress bar, specify a time point of the test run, and directly view the test run situation at the specified time point;

[0102] During the review of the virtual engine test process, the system will display the operating status of the engine's core components in real time, showing it in the form of curve graphs and dynamic cloud maps.

[0103] By applying the liquid rocket engine digital test platform provided in the embodiment of the present invention, one-dimensional and three-dimensional simulation technologies are comprehensively utilized to realize multi-dimensional comprehensive simulation of the entire system; the number of physical test runs is reduced, the R&D cycle is shortened, and the R&D cost is reduced; through virtual test runs, the safety settings of physical test runs are guaranteed and the safety of tests is improved; an interactive virtual test run environment is provided so that users can have an immersive experience; test run efficiency is improved and the virtual test run experience is enhanced.

[0104] Although the present invention has been described herein in conjunction with various embodiments, in the process of implementing the claimed invention, those skilled in the art may understand and implement other variations of the disclosed embodiments by reviewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude multiple situations. A single processor or other unit may implement several functions listed in the claims. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0105] Although the present invention has been described with reference to specific features and embodiments thereof, it will be apparent that various modifications and combinations may be made thereto without departing from the spirit and scope of the invention. Accordingly, this specification and drawings are merely illustrative of the invention as defined by the appended claims and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of the invention. It will be apparent that various modifications and variations may be made to the present invention by those skilled in the art without departing from the spirit and scope of the invention. Thus, the present invention is intended to include such modifications and variations as fall within the scope of the claims of the present invention and their equivalents.

Claims

1. A liquid rocket engine digital test platform, characterized in that: include: One-dimensional simulation module, three-dimensional simulation module, one-dimensional and three-dimensional combined simulation module and virtual test run display module; The one-dimensional simulation module is used to perform one-dimensional simulation of the liquid rocket engine under different working conditions; The three-dimensional simulation module is used to perform three-dimensional simulation of target components in the liquid rocket engine under different working conditions; the target components include at least a thrust chamber and a flow regulator; The one-dimensional and three-dimensional joint simulation module is used to perform one-dimensional and three-dimensional joint simulation on the target component; The virtual test run display module is used to visually display the test run process of the liquid rocket engine.

2. The liquid rocket engine digital test platform according to claim 1, characterized in that: The one-dimensional simulation module at least includes a simulation tool unit and a one-dimensional system characteristic model unit; The simulation tool unit is integrated with multiple simulation software including Simulink, MWorks or AMESim; The one-dimensional system characteristic model unit is used to train a one-dimensional system characteristic model of the engine based on historical experimental data and system simulation data by adopting a dynamic order reduction training technology.

3. The liquid rocket engine digital test platform according to claim 1, characterized in that: The three-dimensional simulation module at least includes a three-dimensional feature model unit and a three-dimensional simulation tool unit; The three-dimensional feature model unit is used to train the pressure field, velocity field and temperature field of the target component based on the POD reduction algorithm, and generate a plurality of corresponding three-dimensional feature models; The three-dimensional simulation tool unit integrates multiple simulation software including ANSYS, Fluent and CFX; the three-dimensional simulation tool unit is used to perform flow, combustion and structural analysis on the target component based on three-dimensional CFD simulation technology.

4. The liquid rocket engine digital test platform according to claim 1, characterized in that: It also includes a feature model module; The characteristic model module at least integrates the one-dimensional system characteristic model of the engine and the three-dimensional characteristic model of the target component; the three-dimensional characteristic model at least includes a three-dimensional characteristic model of the flow regulator and a three-dimensional characteristic model of the thrust chamber.

5. The liquid rocket engine digital test platform according to claim 4, characterized in that: The one-dimensional and three-dimensional joint simulation module is specifically used to combine the one-dimensional system characteristic model of the engine and the three-dimensional characteristic model of the target component through data interaction and time synchronization.

6. The liquid rocket engine digital test platform according to claim 1, characterized in that: The virtual test run display module at least includes a virtual test run environment construction unit and a display unit; The test environment construction unit is used to construct an interactive virtual test environment; The display unit is used to visualize the interactive virtual test environment.

7. The liquid rocket engine digital test platform according to claim 6, characterized in that: The display unit includes at least an interactive interface and a multi-dimensional data visualization interface; The interactive interface is used to receive user selections and determine a target component and multiple parameters of the target component based on the user selections; the interactive interface is integrated with at least a parameter setting page, a start test run button, a pause test run button, a continue test run button, and a video playback area; The multidimensional data visualization interface is used to display the changes in multiple parameters of the target component, including temperature field, pressure field, velocity field, as well as the engine's one-dimensional system simulation model, one-dimensional simulation results, and engine key parameters; the engine key parameters include at least speed, thrust, and specific impulse.

8. The liquid rocket engine digital test platform according to claim 7, characterized in that: The interactive interface further includes a test process playback unit and a test process slow playback unit; the test process playback unit is used to play back the test process of the target component; The test process slow-motion unit is used to change the refresh rate of 10 frames per second to a refresh rate of 40 frames per second or 80 frames per second to achieve a slow-motion function.

9. The liquid rocket engine digital test platform according to claim 1, characterized in that: It also includes a software interface module; the software interface module is used to provide multiple software interfaces, and the multiple software interfaces support collaborative work with the control system corresponding to the liquid rocket engine.

10. The liquid rocket engine digital test platform according to claim 1, characterized in that: The system further comprises a data layer, wherein the data layer is used to store model data.

Images