航空发动机稳态总体气动特性的逆向仿真研究
Inverse simulation research on pneumatic characteristic of aeroengines under steady state
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摘要: 由于缺乏发动机稳态工作的气动参数数据,飞机/发动机气动一体化设计遇到了困难。为此对某型航空发动机的离散试车数据点进行了多元高次多项式拟合,建立了该型号发动机的稳态特性曲线。在此基础上进行了发动机的总体气动性能逆向仿真研究,建立了该型号发动机进出口气动参数随工况变化的关系曲线,为某型飞机的机体/发动机一体化气动设计提供了依据。Abstract: The integral aerodynamic design of aircraft and its propulsion system becomes a difficult task due to the lack of steady pneumatic parameter data of the engine.While the discrete test run data of an aero-engine was adapted using the high order multi-parameters polynomial fit method, the steady characteristic curves were founded.The inverse simulation of pneumatic characteristics for the engine was thus performed, and the state characteristic curves of flow parameters at inlet and outlet of the engine were created, thus providing a basis for integral design of the aircraft and its engine.
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