用参数多项式方法求解叶轮机械三维粘性分离流

TO DETERMINE THE 3-D VISCOUS STALL FLOW IN TURBOMACHINERY USING THE PARAMETRIC POLYNOMIAL METHOD

用参数多项式方法求解叶轮机械三维粘性分离流陈佐一，井有浩，戴东海，王若水（清华大学热能工程系北京１０００８４）关键词参数多项式，三维分离流１绪言叶轮机械三维粘性分离流动一直是叶轮机械气动热力学的难点之一，尽管从原理上可以直接求解Ｎ－Ｓ方程得到，但到目...

The basic theory, equations and procedures to determine the 3-D viscous stall flow in turbomachinery using the Parametric Polynomial Method are presented in this paper. The 3-D N-S equations in cylindric coordinate can be solved directly with the third polynomial of velocity parameter. The flow fields under various flow conditions of 300 MW steam turbine are calculated by this method. The stall flow of compressor cascade under large attack angle is also be calculated, and the results are compared with the experimental ones.