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本文采用涡量一流函数方法，应用贴体坐标技术来研究后向台阶粘性流动，利用作者提出的多连通区域分块计算方法研究了流动区域内含一圆柱体的粘性流动问题。在圆柱体表面上用粘性条件确定流函数值。得到后向台阶内绕流问题的数值解。此法可推广到求解有限区域内多体统流问题。
In this paper, the first-order vorticity function method is applied to study the back-step viscous flow using the body-fitted coordinate technique. The viscous flow problem with a cylinder in the flow region is studied by using the multi-connected region block calculation method proposed by the author. The flow function value is determined on the cylinder surface using the sticky conditions. The numerical solution of the flow problem in the backward step is obtained. This method can be extended to solve the problem of multi-system integration in a limited area.