主流湍流度和物面粗糙度对层流边界层转捩影响的计算

The Influences of Free-Flow Turbulent Intensity and Surface Roughness on Boundary-Layer Transition by Calculation

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.