考虑旋转效应的层流与湍流边界层计算

PREDICTION OF LAMINAR AND TURBULENT BOUNDARY LAYER WITH ROTATION

本文计算二维旋转通道中,考虑旋转效应(法向压力梯度不为零)的层流与湍流边界层。计算采用不等距交错网格、以及二阶精度的隐式中心差分格式。通过对稳定边与不稳定边的层流、湍流边界层的六个算例的计算表明,计算值与实验值符合较好。本文还对旋转情况下湍流模型的修正进行了一些讨论。

This paper studies the laminar and turbulent boundary layer with rotation (normal pressure gradient is not equal to zero) in a 2D rotating channel by using varying steps, staggered grids and implicit central difference scheme. Six computing examples (in. stable and unstable sides) show that the predicted data and the measured ones match quite well. The paper also makes some discussions on modifying the turbulence model with rotation.