Three-dimensional numerical simulation of flow around a circular cylinder under combined steady and oscillatory flow

被引：10
|
作者：
Zhao, Ming [1 ]
Cheng, Liang [1 ]
An, Hong-wei [1 ]
机构：
[1] Univ Western Australia, Sch Civil & Resource Engn, Crawley, WA 6009, Australia
来源：
JOURNAL OF HYDRODYNAMICS | 2010年 / 22卷 / 05期
关键词：
Circular cylinder; steady flow; oscillatory flow; hydrodynamic forces; vortex shedding; LOW KEULEGAN-CARPENTER;
D O I：
10.1016/S1001-6058(09)60184-0
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
Combined steady and oscillatory flow past a circular cylinder is investigated numerically by three-dimensional Direct Numerical Simulation (DNS). The incompressible Navier-Stokes equations are solved by finite element method (FEM). The aim of this study is to investigate influence of the existence of steady current on the flow regime and hydrodynamics forces. The computational results of pure oscillatory flow past a circular cylinder agree well with the experimental data. The flow ratios (ratio of current velocity to oscillatory velocity amplitude) are 0.0, 0.2 0.5 and 1.0 in the study. The influence of the flow ratio on the vortex shedding regime and hydrodynamic forces on the cylinder are investigated numerically.
引用
收藏
页码：144 / 149
页数：6
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