钝体绕流的随机涡方法  

Random Vortex Method for Two-Dimensional Flow past Bluff Body

作　　者：李晓渝[1] 索奇峰[1] 强士中[1] 

机构地区：[1]西南交通大学土木工程学院,四川成都610031

出　　处：《西南交通大学学报》2002年第1期40-43,共4页Journal of Southwest Jiaotong University

摘　　要：在离散涡方法中应用随机微分方程理论来求解二维钝体绕流问题 ,通过对静止圆柱不同雷诺数下的绕流计算 ,得到冯卡门涡街和回流区对称轴线上径向速度分布以及升力系数和阻力系数 。The theory of stochastic differential equation is employed in the discrete vortex method to solve the problem of two dimensional flow past a bluff body. The Von Karman Vortex Street, the distribution of radial velocity on the wake axis, and the coefficients of lift and drag are obtained by the present method in the calculation about two dimensional flow past still cylinder at several Reynolds numbers. The obtained results are in good agreement with those reported in the published literatures.

关 键 词：随机微分方程 圆柱体 钝体绕流 随机涡方法 离散涡方法 雷诺数 空气动力学 速度分布 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]