| 用基于SST模型的DES方法数值模拟圆柱绕流 |
| |
| 引用本文： | 常书平,王永生,庞之洋.用基于SST模型的DES方法数值模拟圆柱绕流[J].舰船科学技术,2009,31(2). |
| |
| 作者姓名： | 常书平 王永生 庞之洋 |
| |
| 作者单位： | 海军工程大学,船舶与动力学院,湖北武汉430033 |
| |
| 摘 要： | 分离涡数值模拟方法(DES)在物面附近求解雷诺平均Navier-Stokes方程,在其他区域采用大涡模拟方法.兼具前者计算量小的优点和后者能模拟大分离湍流流动、计算精度高的优势.采用基于剪切应力传输(SST)两方程湍流模型的DES方法对粘性不可压缩流体的圆柱绕流问题进行数值模拟.通过对所得的速度场、压力场、阻力系数Cd、升力系数Cl、斯特罗哈数St等结果的分析及与文献上的实验和计算数据的比较,说明DES方法对于层流及高亚临界雷诺数的圆柱绕流模拟是合理的.
|
| 关 键 词： | 圆柱绕流 分离涡模拟 雷诺数 涡街 水动力特性 |
Numerical simulation of flow around circular cylinder using SST DES model |
| |
| CHANG Shu-ping,WANG Yong-sheng,PANG Zhi-yang.Numerical simulation of flow around circular cylinder using SST DES model[J].Ship Science and Technology,2009,31(2). |
| |
| Authors: | CHANG Shu-ping WANG Yong-sheng PANG Zhi-yang |
| |
| Institution: | College of Naval Architecture and Power Engineering;Naval University of Engineering;Wuhan 430033;China |
| |
| Abstract: | DES(Detached Eddy Simulation) method has a main idea as that RANS turbulence model is used near the wall and LES method is used in the other region of the field.So DES method is a hybrid turbulence modeling method which unites the efficiency of RANS and the accuracy of LES into one framework.In this paper,DES method based on SST two-equation turbulence model is used to simulate the incompressible viscous flow around a circular cylinder.The calculated results agree well with experimental data and other numer... |
| |
| Keywords: | flow around a cylinder detached eddy simulation Reynolds number Vortex Street hydrodynamic characteristics |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
