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通过对离心叶轮外侧间隙内泄漏气体的流动分析，给出了速度分布，利用Goldstein的对数壁面率去处理摩擦应力分布，通过求解边界层动量积分方程来计算轮阻损失。
The velocity distribution is given by analyzing the flow of the leakage gas in the outer gap of the centrifugal impeller. The frictional stress distribution is treated by Goldstein logarithmic wall rate, and the wheel resistance loss is calculated by solving the boundary layer momentum integral equation.