旋转对三维边界层的影响研究

总结了目前已知的一些旋转的基本现象。在对三维旋转不可压边界层方程进行认真地分析的基础上,详细、深入地讨论了旋转产生的离心惯性力、哥氏惯性力以及法向压力梯度不为零(?p/?x2≠ 0 )对三维边界层计算结果的影响,得到了一些具有一定参考价值的结论。 

EFFECTS OF ROTATION ON 3-D BOUNDARY LAYER

The basic effects of rotation have been surveyed in this paper.On the basis of theoretical analysis of three dimensional rotational incompressible boundary layer equations,the effects of centrifugal force,coriolis force and normal pressure gradients ( p/x 2 ≠0) due to rotation on the calculational results of these equations have been discussed in detail.The turbulent boundary layers on compressor rotor blades and on a rotating cylinder surface have been calculated as numerical examples.The results are consistent with the phenomena revealed in experiments.As a conclusion,the authors proposed that the coriolis force and the centrifugal force should be considered in the engineering computations of rotational problems and the normal pressure gradients are of great importance also in this case.