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Engine simulation design method

A simulation design and engine technology, applied in the direction of calculation, special data processing applications, instruments, etc., can solve the problems of calculation result deviation, no program design and related algorithms, no universality, etc., to improve development ability, easy to master, Increase targeted effect

Inactive Publication Date: 2015-03-25
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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Problems solved by technology

[0009] The first-level mathematical model is designed for specific models and is not universal; the second-level mathematical model is currently being widely used; the third-level mathematical model involves numerical simulation of very complex flow processes in engine components and is still under development
[0010] Due to the unique structural characteristics of the engine, there is no related program design and related algorithms in the general calculation program, which will cause certain deviations in the calculation results

Method used

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Embodiment Construction

[0038] The present invention will be further elaborated below in conjunction with the accompanying drawings of the description.

[0039] An engine simulation design method of the present invention includes the following steps: for any selected engine component, draw the engine power and the air path flowing through the engine, and connect the output end of one component to the input end of the next component through a connection node ;

[0040] According to the interconnection relationship of each component, the functional relationship of program input, system variables and specified characteristics of the component is obtained;

[0041] Using the above functional relationship to perform calculations, a system of simultaneous algebraic transcendental equations and partial differential equations to be solved is obtained;

[0042] The above equations and / or equations are solved to obtain the parameters at each node of the whole engine and the overall performance parameters.

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Abstract

The invention relates to an engine simulation design method. The method comprises the following steps that for any selected engine components, an engine power diagram and paths of air flowing through an engine are drawn, and the output end of one component is connected to the input end of the next component through a connecting joint; the function relationship between program input, system variables and specified characteristics of the components is obtained according to the mutual connection relation of all the components; calculation is carried out through the function relationship, so that a simultaneous algebra transcendental equation and partial differential equation set to be solved is obtained; the equations and / or the equation set are / is solved, and the parameters of all joints and an overall performance parameter of the whole engine are obtained. According to the engine simulation design method, the relative programs of heat exchange calculation of a by-pass heat exchange component is added, calculation precision is improved, technical parameters are provided for related manufactures producing engines in the process of troubleshooting of the same series, the method serves the actual production, the working efficiency of calculation of engine performance is improved greatly, and the deep developing capacity of the engine is improved.

Description

technical field [0001] The invention relates to a development technology of an aero-engine, in particular to an engine simulation design method. Background technique [0002] The computer simulation technology of the overall performance of aero-engine is an important part of the numerical simulation technology of aero-engine. In the engine design stage, through engine performance numerical simulation, the overall performance parameters can be optimized, the engine cycle parameters and component design indicators can be determined, the engine control law can be optimized, and the engine control law can be determined; in the engine development and use stage, through Computer simulation of engine performance can determine various engine characteristics (altitude characteristics, speed characteristics, throttle characteristics, temperature characteristics, etc.), conduct aircraft / engine matching research, and quantitatively analyze the impact of various operating conditions on e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 武艺朱哲闫素银张海江樊瑞华
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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