关键词: 压气机叶栅;纳维尔-斯托克斯方程;激波;数值计算

Abstract: A finite volume method is applied to solve the Navier-Stokes equations for twodimensional transonic f1ow in compressor cascade’ The 4th order of Runge-Kutta scheme is used improve the time-dependent solution. Turbulent properties are calculated with the algebraic Baldwin-Lomax models. The effects of the rotation and the variations of radius, and the thickness of stream surface have been taken into account. With high-pressure-ratio compressore, there is a strong tendency for the calculation to stall within the transient part Of the flow. This can be solved by using a new technique of mass flow controlling. Comparisons of experimental and computational results with this method for four kinds of cascade in a wide inlet Mach number range are presented. The computed results are satisfactory, especially for the supersonic inflow.

Key words: Compressor cascade;Navier-Stokes equations;Shock wave;Numerical calculation