| 用RANS/LES混合方法研究超声速底部流动 |
| |
| 引用本文： | 肖志祥,符松. 用RANS/LES混合方法研究超声速底部流动[J]. 计算物理, 2009, 26(2): 221-230 |
| |
| 作者姓名： | 肖志祥 符松 |
| |
| 作者单位： | 清华大学航天航空学院,北京,100084;清华大学航天航空学院,北京,100084 |
| |
| 基金项目： | 国家自然科学基金,航天创新及支撑基金 |
| |
| 摘 要： | 在剪切应力输运和弱非线性k-ω模式中引入压缩性修正,并在此基础上构造RANS/LES混合方法,对包含丰富流动结构和复杂流动机理的导弹类超声速底部流场进行数值分析,发现压缩性修正可更好地描述流场特征,适于具有较强压缩性效应流动的数值分析;混合方法捕捉到丰富的流动现象及非定常特性.
|
| 关 键 词： | 超声速底部绕流 压缩性修正 弱非线性模式 RANS/LES混合方法 |
| 收稿时间： | 2007-04-26 |
| 修稿时间： | 2008-10-04 |
Study on Supersonic Base Flow Using RANS/LES Methods |
| |
| XIAO Zhixiang,FU Song. Study on Supersonic Base Flow Using RANS/LES Methods[J]. Chinese Journal of Computational Physics, 2009, 26(2): 221-230 |
| |
| Authors: | XIAO Zhixiang FU Song |
| |
| Affiliation: | School of Aerospace, Tsinghua University, Beijing 100084 |
| |
| Abstract: | RANS/LES hybrid methods are developed on the basis of shear stress transport and weakly nonlinear k-ω models with compressible corrections.Supersonic flowfields behind a cylindrical afterbody are investigated to explore rich flow structures and aerodynamic characteristics.Compressible correction shows good agreement with experiment.Results by hybrid methods present detailed and reasonable flow structures,turbulence information and unsteady characteristics. |
| |
| Keywords: | supersonic base flow compressible correction weakly nonlinear RANS/LES hybrid method |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《计算物理》浏览原始摘要信息 |
|
点击此处可从《计算物理》下载全文 |
