预测轴流压气机工作稳定性的非线性模型

A NONLINEAR MODEL FOR INSTABILITY PREDICTION OF AXIAL FLOW COMPRESSORS

建立了预测轴流压气机工作稳定性的非线性模型，采用有限差分数值模拟单转子和一台三级轴流压气机旋转失速的形成和发展过程，预测失速特征参数。由于合理地考虑了失速流动的非定常和非线性因素的影响，大多数失速特征参数的预测结果与试验测量值相符。

A nonlinear,two dimension,compressible dynamic model of instability prediction of axial flow compressors was described.The flow dynamics were presented by unsteady Euler equations and semi empirical correlation.The development of stall cell and the characteristic parameters of rotating stall in a single rotor and a three stage axial flow compressor were simulated by numerical method.Most of the simulation results agree well with the experimental data