摘要
本文利用二阶湍流模型方法,导出主流湍流度和物面粗糙度对层流边界层转捩位置影响的规律。计算结果和实验数据比较一致,说明这种计算方法具有工程应用价值。
This paper used a second-order-closure turbulence model method to calculate the influence of free-flow turbulent intensity and surface roughness on boundary-layer transition. The calculating results is consistent with the test data, it is shown that the calculation method is worthful in the technological application.
关键词
边界层
转捩流
湍流度
粗糙度
层流
boundary layer, stability of flow, transition flow
