粘性流体绕流圆管的边界层厚度的局部相似性解法

The method of partial similarity of the boundary layer of viscous fluid flowing over circular cylinder

本文分析了粘性流体绕流圆管时边界层厚度的一种局部相似性解法。根据相似性解原理 ,将流体在圆管上形成的二元曲面转化为若干段 ,把每一段近似处理成一个楔形体斜面 ,把相似性解用于每一段 ,并考虑界面上的修正 ,就可以得到边界层的物理参数。计算表明 ,这种方法是可行的。

The solution of boundary layer of curved surface was discussed. According to the principle of the theory of similarity, the method of partial similarity was proposed to predict the thickness of the boundary layer for fluid flowing over a circular cylinder. By dividing the circular arc into tiny segments and regarding each segment and the error caused in this way was fully considered. This method was proved to be feasible.