Simulation verification system and method for liquid rocket engine
By applying simulation technology and MBSE theory in engine development, a functional and performance simulation model is constructed, and the existing engine verification methods are lagging, high costs, and lack of functional logic verification are solved, early verification and functional logic verification are achieved, and development efficiency and cost-effectiveness are improved.
Patent Information
- Application Number
- CN202211585323.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2022-12-09
- Publication Date
- 2025-06-27
AI Technical Summary
The existing engine verification methods have problems such as lag, high cost, and lack of functional logic verification, which cannot meet the requirements of digital development.
A joint simulation verification method for engine functions, performance and its combined simulation based on simulation technology is proposed. Combined with MBSE theory, an engine function simulation model and performance simulation model are constructed to realize early verification of engine system solutions and functional logic verification.
Through simulation verification methods, the design solution deficiency can be exposed in advance, the number of iterations can be reduced, the development cycle can be shortened, the development cost can be reduced, and the complete functional logic verification of the engine system solution can be achieved.
Smart Images
Figure CN120217613A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a simulation verification method for the design scheme of a liquid rocket engine system, and particularly to a simulation verification system and method for a liquid rocket engine. Background Art
[0002] Digitalization is an inevitable trend in the future technological development. In the current engine development mode, when verifying whether the product design scheme is feasible, it mainly relies on scaled-down tests or full-scale product tests, which have problems such as verification lag, high cost, and lack of functional logic verification, and cannot meet the requirements of digital development. Therefore, it is necessary to use digital means to carry out engine function and performance verification to expose the deficiencies of the scheme in advance, avoid repeated schemes, thereby reducing the number of iterations, shortening the development cycle, and reducing the development cost. Summary of the Invention
[0003] To solve the technical problems such as the lag of the existing engine verification method, high cost, and lack of functional logic verification, a simulation verification system and method for a liquid rocket engine are proposed. By combining the MBSE theory with the characteristics of engine development, the present invention proposes an engine function, performance, and their co-simulation verification method based on simulation technology, realizing full demonstration and early verification of the engine system scheme based on simulation technology.
[0004] The technical solution provided by the present invention is as follows:
[0005] A simulation verification system for a liquid rocket engine, characterized in that it includes an engine function simulation model generation module and an engine performance simulation model generation module;
[0006] The engine function simulation model generation module includes an engine static function simulation model generation unit and an engine dynamic function simulation model generation unit;
[0007] The engine performance simulation model generation module includes an engine static performance simulation model generation unit, an engine dynamic performance simulation model generation unit, and an engine reliability performance simulation model generation unit;
[0008] One input of the engine static performance simulation model generation unit is connected to the static simulation component model library, and there is an interactive mapping relationship between the engine static performance simulation model generation unit and the engine static function simulation model generation unit to realize the co-simulation of the engine static function and the engine static performance for verifying the engine static requirements
[0009] One input of the engine dynamic performance simulation model generation unit is connected to the dynamic simulation component model library, and there is an interactive mapping relationship between the engine dynamic performance simulation model generation unit and the engine dynamic function simulation model generation unit to realize the co-simulation of the engine dynamic function and the engine dynamic performance for verifying the engine dynamic requirements;
[0010] One input of the engine reliability performance simulation model generation unit is connected to the reliability simulation component model library, and there is an interactive mapping relationship between the engine reliability performance simulation model generation unit and the engine function simulation model to realize the co-simulation of the engine function and the engine reliability performance for verifying the engine reliability requirements.
[0011] Furthermore, the engine static function simulation model generation unit includes an engine system layer static function simulation model generation subunit, an engine subsystem layer static function simulation model generation subunit, and an engine component layer static function simulation model generation subunit;
[0012] The engine dynamic function simulation model generation unit includes an engine system layer dynamic function simulation model generation subunit, an engine subsystem layer dynamic function simulation model generation subunit, and an engine component layer dynamic function simulation model generation subunit.
[0013] The present invention also provides a simulation verification method for a liquid rocket engine. The special feature of using the above-mentioned simulation verification system for a liquid rocket engine is that it includes the following steps:
[0014] S1. Construct an engine function simulation model, which includes an engine dynamic function simulation model and an engine static function simulation model;
[0015] S2. Obtain an engine architecture model according to the engine function simulation model;
[0016] Based on the engine architecture model and the corresponding static simulation component model library or dynamic simulation component model library or reliability simulation component model library, respectively construct an engine dynamic performance simulation model, an engine static performance simulation model, and an engine reliability performance simulation model; the engine dynamic performance simulation model, the engine static performance simulation model, and the engine reliability performance simulation model constitute the engine performance simulation model;
[0017] S3. Establish a mapping relationship between the engine function simulation model and the engine performance simulation model using an XML format file to realize the call of the performance simulation model during the function simulation process to carry out corresponding calculation verification, and feedback the results to the corresponding engine requirement module to judge whether the design meets the requirements;
[0018] S4. Simulation verification
[0019] S4.1. Co-simulation of the engine static function simulation model and the engine static performance simulation model
[0020] According to the mapping relationship established in step S2, call the engine static performance simulation model to conduct static characteristic simulation, and feedback the static characteristic simulation results to the engine static requirement module to determine whether the static characteristic simulation results meet the static requirements;
[0021] Meanwhile, use the engine static function simulation model to conduct static function simulation, and feedback the static function simulation results to the engine static requirement module to determine whether the static function simulation results meet the static requirements;
[0022] If both the static characteristic simulation results and the static function simulation results meet the static requirements, the verification is completed; if the static characteristic simulation results and / or the static function simulation results do not meet the static requirements, adjust the engine design parameters and re-conduct the verification until the verification is completed;
[0023] S4.2. Co-simulation of the engine dynamic function simulation model and the engine dynamic performance simulation model
[0024] According to the mapping relationship established in step S2, call the engine dynamic performance simulation model to conduct dynamic characteristic simulation, and feedback the dynamic characteristic simulation results to the engine dynamic requirement module to determine whether the dynamic characteristic simulation results meet the dynamic requirements;
[0025] Meanwhile, use the engine dynamic function simulation model to conduct dynamic function simulation, and feedback the dynamic function simulation results to the engine dynamic requirement module to determine whether the dynamic function simulation results meet the dynamic requirements;
[0026] If the dynamic characteristic simulation results and the dynamic function simulation results meet the dynamic requirements, the verification is completed; if the dynamic characteristic simulation results and / or the dynamic function simulation results do not meet the dynamic requirements, re-adjust the engine design parameters and re-conduct the verification until the verification is completed;
[0027] S4.3. Co-simulation of the engine function simulation model and the engine reliability performance simulation model
[0028] Call the engine reliability performance simulation model to conduct reliability simulation, and feedback the reliability simulation results to the engine reliability requirement module to determine whether the reliability simulation results meet the reliability requirements;
[0029] Meanwhile, use the engine function simulation model to conduct function simulation, and feedback the function simulation results to the engine reliability requirement module to determine whether the function simulation results meet the reliability requirements;
[0030] If both the reliability simulation result and the function simulation result meet the reliability requirements, the verification is completed; if the reliability simulation result and / or the function simulation result do not meet the reliability requirements, adjust the engine design parameters and re-conduct the verification until the verification is completed;
[0031] The order of step S4.1, step S4.2 and step S4.3 can be adjusted according to the verification requirements.
[0032] Further, in step S1, the construction of the engine function simulation model is specifically: constructing an engine system layer function simulation model, an engine subsystem layer function simulation model, and an engine component layer function simulation model. Among them, the engine system layer function simulation model includes an engine system layer dynamic function simulation model and an engine system layer static function simulation model; the engine subsystem layer function simulation model includes an engine subsystem layer dynamic function simulation model and an engine subsystem layer static function simulation model; the engine component layer function simulation model includes an engine component layer dynamic function simulation model and an engine component layer static function simulation model.
[0033] Further, in step S2, after obtaining the engine architecture model according to the engine function simulation model, it further includes the step of simplifying the engine architecture model according to the preset simplification rules, so as to accelerate the speed of simulation and improve the simulation efficiency.
[0034] The present invention also provides a computer-readable storage medium, on which a computer program is stored. The special feature is that: when the computer program is executed by a processor, the steps of the above simulation verification method for a liquid rocket engine are implemented.
[0035] The present invention also provides a computer device, including a processor, a memory connected to the processor, and a computer program that can run on the processor. The special feature is that: when the processor executes the computer program, the steps of the above simulation verification method for a liquid rocket engine are implemented.
[0036] The beneficial effects of the present invention:
[0037] 1. The engine function simulation model constructed by the present invention performs function simulation on the engine design scheme, exposes the deficiencies of the scheme in advance, avoids repeated schemes, can reduce the number of iterations, shorten the development cycle, and reduce the development cost.
[0038] 2. By establishing a dynamic performance simulation model of the engine, a static performance simulation model of the engine, and a reliability performance simulation model of the engine, and unifying the connection ports through an XML format file, a mapping relationship is established between the engine function simulation model and the engine performance simulation model, forming a main body with the function simulation model, and calling different performance models when needed to realize the simulation combination of the engine function and static, dynamic, reliability and other performances, and realizing the complete function logic verification in the engine system scheme demonstration stage.
[0039] 3. Function simulation models are established respectively according to the engine system layer, subsystem layer, and component layer, which can verify and evaluate the engine system scheme more perfectly. Brief Description of the Drawings
[0040] Figure 1 Schematic diagram of an embodiment of the simulation verification system for a liquid rocket engine of the present invention;
[0041] Figure 2 Flow chart of the co-simulation of the engine static function simulation model and the engine static performance simulation model in the embodiment of the simulation verification method for a liquid rocket engine of the present invention;
[0042] Figure 3 Flow chart of the co-simulation of the engine dynamic function simulation model and the engine dynamic performance simulation model in the embodiment of the simulation verification method for a liquid rocket engine of the present invention;
[0043] Figure 4 Flow chart of the co-simulation of the engine function simulation model and the engine reliability performance simulation model in the embodiment of the simulation verification method for a liquid rocket engine of the present invention;
[0044] Figure 5 Schematic diagram of a function simulation example in the embodiment of the present invention;
[0045] Figure 6 Co-simulation example of function and performance in the embodiment of the present invention Figure 1 ;
[0046] Figure 7 Co-simulation example of function and performance in the embodiment of the present invention Figure 2
[0047] Figure 8 Schematic diagram of the data interaction method of the XML format file in the embodiment of the present invention;
[0048] Figure 9 Schematic diagram of the co-simulation operation interface of function and performance in the embodiment of the present invention;
[0049] Figure 10 is Figure 9 Schematic diagram of the result of the co-simulation operation. Detailed implementation manners
[0050] Refer to Figure 1 , this embodiment provides a simulation verification system for a liquid rocket engine, and the system includes an engine functional simulation model generation module and an engine performance simulation model generation module;
[0051] The engine functional simulation model generation module includes an engine static functional simulation model generation unit and an engine dynamic functional simulation model generation unit; the engine static functional simulation model generation unit includes an engine system layer static functional simulation model generation subunit for generating an engine system layer static functional simulation model, an engine subsystem layer static functional simulation model generation subunit for generating an engine subsystem layer static functional simulation model, and an engine component layer static functional simulation model generation subunit for generating an engine component layer static functional simulation model; the engine dynamic functional simulation model generation unit includes an engine system layer dynamic functional simulation model generation subunit for generating an engine system layer dynamic functional simulation model, an engine subsystem layer dynamic functional simulation model generation subunit for generating an engine subsystem layer dynamic functional simulation model, and an engine component layer dynamic functional simulation model generation subunit for generating an engine component layer dynamic functional simulation model.
[0052] The engine performance simulation model generation module includes an engine static performance simulation model generation unit, an engine dynamic performance simulation model generation unit, and an engine reliability performance simulation model generation unit.
[0053] One input of the engine static performance simulation model generation unit is connected to the static simulation component model library, and there is an interactive mapping relationship between the engine static performance simulation model generation unit and the engine static functional simulation model generation unit to realize the joint simulation of the engine static function and the engine static performance for verifying the engine static requirements.
[0054] One input of the engine dynamic performance simulation model generation unit is connected to the dynamic simulation component model library, and there is an interactive mapping relationship between the engine dynamic performance simulation model generation unit and the engine dynamic functional simulation model generation unit to realize the joint simulation of the engine dynamic function and the engine dynamic performance for verifying the engine dynamic requirements.
[0055] One input of the engine reliability performance simulation model generation unit is connected to the reliability simulation component model library, and there is an interactive mapping relationship between the engine reliability performance simulation model generation unit and the engine functional simulation model to realize the joint simulation of the engine reliability function and the engine reliability performance for verifying the engine reliability requirements.
[0056] Refer to Figures 2 - 4, this embodiment also provides a simulation verification method for a liquid rocket engine, and this method includes the following steps:
[0057] S1. Construct an engine functional simulation model, where the engine functional simulation model includes an engine dynamic functional simulation model and an engine static functional simulation model; specifically constructing the engine functional simulation model means: constructing an engine system layer functional simulation model, an engine subsystem layer functional simulation model, and an engine component layer functional simulation model. Among them, the engine system layer functional simulation model includes an engine system layer dynamic functional simulation model and an engine system layer static functional simulation model; the engine subsystem layer functional simulation model includes an engine subsystem layer dynamic functional simulation model and an engine subsystem layer static functional simulation model; the engine component layer functional simulation model includes an engine component layer dynamic functional simulation model and an engine component layer static functional simulation model.
[0058] In this embodiment, by constructing an engine functional simulation model, carry out engine functional simulation (working logic), check the rationality of the engine operation, and the robustness of the operation under the response of interference factors; for example: refer to Figure 5 , open the oxygen valve, and the oxidizer supply system supplies the oxidizer; open the fuel valve, the fuel supply system; the oxidizer and fuel burn in the thrust chamber to generate high-temperature and high-pressure gas, and the gas is discharged to generate reaction thrust, etc. These are the basic functions of the engine operation. After logical simulation analysis, pre-start inspection of the engine can be added before these basic functions, and active thermal protection can be added to the thrust chamber to improve the reliability of the engine operation. The function simulation verification function makes up for the limitation that the current design mode is difficult to describe the dynamic process, makes the complex system "move and come to life", is more intuitive in expression, and more convenient to check.
[0059] S2. Obtain an engine architecture model according to the engine functional simulation model. In this embodiment, according to the preset simplification rules, simplify the engine architecture model to obtain a simplified engine architecture model; the simplified engine architecture model improves the simulation efficiency.
[0060] Based on the simplified engine architecture model and the corresponding static simulation component model library or dynamic simulation component model library or reliability simulation component model library, respectively construct an engine dynamic performance simulation model, an engine static performance simulation model, and an engine reliability performance simulation model; the engine dynamic performance simulation model, the engine static performance simulation model, and the engine reliability performance simulation model together constitute the engine performance simulation model. Among them, the generation rule of the engine reliability performance simulation model is: ① Components without backups generate reliability models in series, and components with backups generate reliability models in parallel; ② For components with very mature technologies, such as relatively thick pipelines, reliability models may not be generated or calculated as absolutely reliable (the reliability index is taken.
[0061] In this embodiment, an engine architecture model is used as the "outer framework" and a corresponding model library is used as the "filling material" to construct an engine dynamic performance simulation model, an engine static performance simulation model, and an engine reliability performance simulation model. The performance indicators involved in the functional simulation process are parameterized to facilitate the computer to automatically check whether the engine performance indicators meet the requirements. For example, for the statement "the engine provides variable thrust, and the attached thrust performance indicator is 10 kN", when the engine executes the function of providing thrust, it will call the static performance simulation model for static calculation to check whether the engine thrust indicator meets the requirements. If the thrust meets the requirements, the next functional simulation activity will be executed. If the requirements are not met, the simulation will terminate and the parameter design needs to be carried out again.
[0062] S3. Establish a mapping relationship between the engine functional simulation model and the engine performance simulation model using an XML format file to enable the corresponding calculation verification to be carried out by calling the performance simulation model during the functional simulation process, and feedback the results to the corresponding engine requirement module to determine whether the design meets the requirements. For example, when carrying out functional analysis activities such as engine pre-start preparation, start, thrust adjustment, providing kerosene to the servo mechanism, pressurizing the oxygen tank, shutdown, post-shutdown processing, fault mode operation and handling, etc., during the functional analysis process, the corresponding performance model is called according to the mapping relationship for performance analysis, and the results are feedback to the engine requirement module to verify the functional completeness of the engine, the anti-interference ability during use and operation, etc., and improve the design completeness and reliability of the engine. See Figure 8 。
[0063] The implementation of the mapping between the functional model and the performance model using an XML format file requires both the functional simulation and the performance simulation to interact in the form of data. The meanings of each variable are specified in the XML format file, as shown in Table 1. It is stipulated that both parties comply with this technical agreement. Then, any file output by one party can be accurately received by the software of the other party. Table 1 shows the cuboid protocol file based on the XML format file.
[0064] Table 1
[0065]
[0066] S4. Simulation verification. See Figure 6 and Figure 7 ;
[0067] S4.1. Co-simulation of the engine static functional simulation model and the engine static performance simulation model
[0068] According to the mapping relationship established in step S2, call the engine static performance simulation model to conduct static characteristic simulation, and feedback the static characteristic simulation results to the engine static requirement module to determine whether the static characteristic simulation results meet the static requirements;
[0069] Meanwhile, use the engine static function simulation model to conduct static function simulation, and feedback the static function simulation results to the engine static requirement module to determine whether the static function simulation results meet the static requirements;
[0070] If both the static characteristic simulation results and the static function simulation results meet the static requirements, the verification ends; if the static characteristic simulation results and / or the static function simulation results do not meet the static requirements, adjust the engine design parameters and conduct verification again until the verification ends.
[0071] S4.2. Co-simulation of the engine dynamic function simulation model and the engine dynamic performance simulation model
[0072] According to the mapping relationship established in step S2, call the engine dynamic performance simulation model to conduct dynamic characteristic simulation, and feedback the dynamic characteristic simulation results to the engine dynamic requirement module to determine whether the dynamic characteristic simulation results meet the dynamic requirements;
[0073] Meanwhile, use the engine dynamic function simulation model to conduct dynamic function simulation, and feedback the dynamic function simulation results to the engine dynamic requirement module to determine whether the dynamic function simulation results meet the dynamic requirements;
[0074] If the dynamic characteristic simulation results and the dynamic function simulation results meet the dynamic requirements, the verification ends; if the dynamic characteristic simulation results and / or the dynamic function simulation results do not meet the dynamic requirements, readjust the engine design parameters and conduct verification again until the verification ends;
[0075] S4.3. Co-simulation of the engine function simulation model and the engine reliability performance simulation model
[0076] Call the engine reliability performance simulation model to conduct reliability simulation, and feedback the reliability simulation results to the engine reliability requirement module to determine whether the reliability simulation results meet the reliability requirements;
[0077] Meanwhile, use the engine function simulation model to conduct function simulation, and feedback the function simulation results to the engine reliability requirement module to determine whether the function simulation results meet the reliability requirements;
[0078] If both the reliability simulation result and the functional simulation result meet the reliability requirements, the verification is completed; if the reliability simulation result and / or the functional simulation result do not meet the reliability requirements, adjust the engine design parameters and re-perform the verification until the verification is completed; according to the reliability simulation component model library, input the component reliability value into the engine reliability performance simulation model, or calculate the theoretical reliability value of the component based on the reliability characteristic quantities selected from multiple tests of the engine; based on the reliability values of each component, calculate whether the overall reliability of the engine meets the requirements. If not, the component reliability indicators need to be re-allocated, and each component needs to carry out production tests according to its allocated reliability indicators to ensure that the product reliability meets the requirements.
[0079] The order of step S4.1, step S4.2, and step S4.3 can be adjusted according to the verification requirements.
[0080] See Figure 9 and Figure 10 , taking the oxidizer filling activity at the subsystem level as an example to illustrate the simulation verification method of this embodiment. Its functional simulation part includes: functional activities such as opening the oxygen valve and the pipeline after the oxidizer filling valve, and whether it interferes with the execution of other functions of the engine. When performing this functional activity, it is necessary to judge whether the relevant performance meets the requirements, such as: pipeline filling time, filling water hammer pressure, etc. This simulation verification takes the functional simulation as the main line, and calls the performance simulation model when needed to combine them to realize the virtual operation of the engine, and to check the rationality of the engine's operation under the mission profile and whether the performance meets the requirements. After the simulation verification shows that the functions and various performances of the design scheme meet the design requirements, the final design scheme of this stage is obtained, and the design requirements are officially issued to each component for its detailed design.
[0081] This embodiment also provides a computer-readable storage medium, on which a computer program capable of implementing the above method is stored. In other possible implementation manners, the above method can be implemented in the form of a program product, which includes program code. When the program product runs on a terminal device, the program code is used to cause the terminal device to execute the steps provided according to this embodiment in the above "simulation verification method for liquid rocket engines". The program product for implementing the above method in this embodiment can adopt a portable compact disc read-only memory (CD-ROM) and include program code, and can run on a terminal device, such as a personal computer. However, the program product of this embodiment is not limited to this, and the readable storage medium can be any tangible medium that contains or stores a program, and this program can be used by or combined with an instruction execution system, device, or device.
[0082] In this embodiment, a computer device capable of implementing the above simulation verification method for liquid rocket engines is also provided.
[0083] Components of a computer device may include, but are not limited to: at least one processing unit, at least one storage unit, a bus connecting different system components (including the storage unit and the processing unit), and a display unit.
[0084] The computer device may also communicate with one or more external devices (such as a keyboard, a pointing device, a Bluetooth device, etc.), may also communicate with one or more devices that enable a user to interact with the computer device, and / or communicate with any device that enables the computer device to communicate with one or more other computing devices (such as a router, a modem, etc.). Such communication may be carried out through an input / output (I / O) interface, and the computer device may also communicate with one or more networks (such as a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) through a network adapter.
[0085] Through the description of the above embodiments, those skilled in the art can easily understand that the embodiments described herein can be implemented by software or by a combination of software and necessary hardware. Therefore, the technical solution according to this embodiment can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, including several instructions to enable a computing device (which can be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to this embodiment.
Claims
1. A simulation and verification system for a liquid rocket engine, characterized in that: It includes an engine function simulation model generation module and an engine performance simulation model generation module; The engine function simulation model generation module includes an engine static function simulation model generation unit and an engine dynamic function simulation model generation unit; The engine performance simulation model generation module includes an engine static performance simulation model generation unit, an engine dynamic performance simulation model generation unit, and an engine reliability performance simulation model generation unit; One input of the engine static performance simulation model generation unit is connected to the static simulation component model library, and there is an interactive mapping relationship between the engine static performance simulation model generation unit and the engine static function simulation model generation unit to realize the joint simulation of the engine static function and the engine static performance for verifying the engine static requirements; One input of the engine dynamic performance simulation model generation unit is connected to the dynamic simulation component model library, and there is an interactive mapping relationship between the engine dynamic performance simulation model generation unit and the engine dynamic function simulation model generation unit to realize the joint simulation of the engine dynamic function and the engine dynamic performance for verifying the engine dynamic requirements; One input of the engine reliability performance simulation model generation unit is connected to the reliability simulation component model library, and there is an interactive mapping relationship between the engine reliability performance simulation model generation unit and the engine function simulation model to realize the joint simulation of the engine function and the engine reliability performance for verifying the engine reliability requirements.
2. The simulation verification system for a liquid rocket engine according to claim 1, wherein: The engine static function simulation model generation unit includes an engine system layer static function simulation model generation subunit, an engine subsystem layer static function simulation model generation subunit, and an engine component layer static function simulation model generation subunit; The engine dynamic function simulation model generation unit includes an engine system layer dynamic function simulation model generation subunit, an engine subsystem layer dynamic function simulation model generation subunit, and an engine component layer dynamic function simulation model generation subunit.
3. A simulation verification method for a liquid rocket engine, which uses the simulation verification system for a liquid rocket engine described in claim 1, is characterized in that, It includes the following steps: S1. Construct an engine function simulation model, which includes an engine dynamic function simulation model and an engine static function simulation model; S2. Obtain an engine architecture model based on the engine function simulation model; Based on the engine architecture model and the corresponding static simulation component model library or dynamic simulation component model library or reliability simulation component model library, respectively construct an engine dynamic performance simulation model, an engine static performance simulation model, and an engine reliability performance simulation model; The engine dynamic performance simulation model, the engine static performance simulation model, and the engine reliability performance simulation model constitute the engine performance simulation model; S3. Establish a mapping relationship between the engine function simulation model and the engine performance simulation model using an XML format file; S4. Simulation verification S4.
1. Joint simulation of the engine static function simulation model and the engine static performance simulation model According to the mapping relationship established in step S2, call the engine static performance simulation model to conduct static characteristic simulation, and feedback the static characteristic simulation results to the engine static requirement module to determine whether the static characteristic simulation results meet the static requirements; Meanwhile, adopt the engine static function simulation model to conduct static function simulation, and feedback the static function simulation results to the engine static requirement module to determine whether the static function simulation results meet the static requirements; If both the static characteristic simulation results and the static function simulation results meet the static requirements, the verification ends; If the static characteristic simulation results and / or the static function simulation results do not meet the static requirements, adjust the engine design parameters and conduct verification again until the verification ends; S4.
2. Co-simulation of the engine dynamic function simulation model and the engine dynamic performance simulation model According to the mapping relationship established in step S2, call the engine dynamic performance simulation model to conduct dynamic characteristic simulation, and feedback the dynamic characteristic simulation results to the engine dynamic requirement module to determine whether the dynamic characteristic simulation results meet the dynamic requirements; Meanwhile, adopt the engine dynamic function simulation model to conduct dynamic function simulation, and feedback the dynamic function simulation results to the engine dynamic requirement module to determine whether the dynamic function simulation results meet the dynamic requirements; If the dynamic characteristic simulation results and the dynamic function simulation results meet the dynamic requirements, the verification ends; If the dynamic characteristic simulation results and / or the dynamic function simulation results do not meet the dynamic requirements, readjust the engine design parameters and conduct verification again until the verification ends; S4.
3. Co-simulation of the engine function simulation model and the engine reliability performance simulation model Call the engine reliability performance simulation model to conduct reliability simulation, and feedback the reliability simulation results to the engine reliability requirement module to determine whether the reliability simulation results meet the reliability requirements; Meanwhile, adopt the engine function simulation model to conduct function simulation, and feedback the function simulation results to the engine reliability requirement module to determine whether the function simulation results meet the reliability requirements; If both the reliability simulation results and the function simulation results meet the reliability requirements, the verification ends; If the reliability simulation results and / or the function simulation results do not meet the reliability requirements, adjust the engine design parameters and conduct verification again until the verification ends; The order of step S4.1, step S4.2 and step S4.3 can be adjusted according to the verification requirements.
4. The simulation verification method for a liquid rocket engine according to claim 3, characterized in that: In step S1, the construction of the engine function simulation model is specifically as follows: construct an engine system layer function simulation model, an engine subsystem layer function simulation model, and an engine component layer function simulation model. Among them, the engine system layer function simulation model includes an engine system layer dynamic function simulation model and an engine system layer static function simulation model; the engine subsystem layer function simulation model includes an engine subsystem layer dynamic function simulation model and an engine subsystem layer static function simulation model; the engine component layer function simulation model includes an engine component layer dynamic function simulation model and an engine component layer static function simulation model.
5. The simulation verification method for a liquid rocket engine according to claim 3, characterized in that: In step S2, after obtaining the engine architecture model according to the engine functional simulation model, it further includes the step of simplifying the engine architecture model according to a preset simplification rule.
6. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, it implements the steps of the simulation verification method for a liquid rocket engine according to any one of claims 3-5.
7. A computer device, comprising a processor, a memory connected to the processor, and a computer program that can run on the processor, characterized in that: When the processor executes the computer program, it implements the steps of the simulation verification method for a liquid rocket engine according to any one of claims 3-5.