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1前言目前关于透平机械的设计方法大多数都是基于定常流动的.然而透平机械内的流动本质上是非定常的.如果能够定量地考虑非定常流动的影响来进行设计,将会使透平机械的性能进一步提高.在多级轴流压气机中,与叶片相对运动有关的两种主要来源是叶片排间的势流相互干扰?..“,”The unsteady flow field resulted from the interaction between upstream wakes and stator is simulated by an inviscid and a viscous numerical method respectively. Two-dimensional unsteady non-reflecting boundary conditions are implemented at the inlet and outlet of the computational domain to remove the spurious numerical reflection. High-order fluctuations of unsteady lift due to the influence of viscosity are perceived from the comparison between the inviscid and the cooresponding viscous results.The mechanism of wake unsteady decay process and unsteady loss is discussed and manifested through the comparison of the results under several different conditions.