离心叶轮正冲角流场计算的边界层方法

本文使用stanitz快速分析法计算主流,用积分法计算带旋转和曲率的二维不可压湍流边界层.通过流量方程将两者紧密联系起来、同时求解,能够连续计算至分离区.可方便快速地用于估算离心叶轮在正冲角工况下的流场.

A Boundary Layer Method to Evaluate the Flow with Positive Incidence Angle in a Centrifugal Impeller

By means of a flow rate equation, the boundary layer is closely connected with the core flow and can be computed into separated region continuously. In the model, the Stanitz rapid approximate method is used to determine the inviscid potential flow, and an integral method is presented to evaluate the two-dimensional incompressible turbulent boundary layer with rotation and wall-curvature. The procedure can be easily and rapidly used to evaluate the flow with positive incidence angle in a centrifugal impeller.