圆柱绕流的非线性动力学  

NONLINEAR DYNAMICS OF VISCOUS FLOWS PAST A CIRCULAR CYLINDER

作　　者：庆增 

机构地区：[1]北京大学力学系

出　　处：《力学进展》1994年第4期525-546,共22页Advances in Mechanics

摘　　要：本文利用非线性动力学的概念和方法来研究粘性不可压缩流体的二维圆柱绕流问题．计算了定常流失稳以及出现混沌的临界雷诺数，并估计了混沌解的一些统计特征．In this paper the problem of two-dimensional viscous flows past a circular cylinder is studied by making use of the concepts and methods of non-linear dynamics.The critical Reynolds numbers for a steady flow to becomeunstable,and for chaos to appear are computed,and some statistical charac- teristics of chaotic solutions are evaluated.

关 键 词：圆柱绕流 非线性动力学 粘性流体力学 分形 

分 类 号：O357.1[理学—流体力学]