基于Matlab/Simulink的齿轮传动涡扇发动机建模仿真

Modeling and Simulation on Geared Turbofan Engine based on Matlab/Simulink

基于Matlab/Simulink高级图形化仿真环境,利用图形模块化建模技术和部件级模型建模方法,建立某型齿轮传动涡扇发动机的稳态模型。该稳态模型由牛顿-拉夫逊法数值求解。其中,选取最大连续爬升、最大巡航等典型稳态工况点,对比稳态模型的仿真值与虚拟试验平台的试验值,结果表明,设计点相对误差小于2%,非设计点相对误差小于4%.稳态模型精度较高,为齿轮传动涡扇发动机性能分析和动态模型的研究奠定了基础。

A steady state model of a geared turbofan engine was developed based on graphical modeling technology and component-level modeling method in Matlab/Simulink graphical simulation environment. The engine steady state model was solved numerically by the Newton-Raphson method. Some typical steady operating points, such as maximum continuous climbing, maximum cruise etc were chosen, and the comparison with the simulation data of the model and the test data of the virtual test bench showed that the relative error of the design point was less than 2% and the relative error of the non-design points was less than 4%.The accuracy of the steady state model was high, which formed the foundation of the geared turbofan engine performance analysis and the research of dynamic state model.