摘要
本文分析了采用大涡模拟方法和复合式柱面固壁条件对亚临界区(Re=1.4×10~5)圆柱绕流进行二维数值模拟的结果。研究了在二维模型中引入涡量耗散项来模拟涡街的三维涡量耗散效应的方法,并分析对比了有关流动特征。
In this paper an analysis is made on the 2-D simulation results of flow past a circular cylinder in the subcriti-cal regime (Re= 1. 4 ×10s), obtained with the numerical model based on the approach of large eddy simulation and the application of a hybrid type of boundary condition at the cylinder wall. To model the vorticity dissipation of the real 3-D flow, a method is proposed of adding a momentum source term to the 2-D primitive equations, and the computational results are evaluated with a comparison between the simulated flow behaviors.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
1992年第A12期614-622,共9页
Chinese Journal of Hydrodynamics
基金
国家自然科学基金
关键词
圆柱
绕流
大涡模拟
高雷诺数
flow past a cylinder, large eddy simulation, boundary condition, vorticity dissipation, high Reynolds number.
