| 细长体背风面横向非对称分离的研究 |
| |
| 引用本文： | 李锋,周伟江,王强,汪翼云. 细长体背风面横向非对称分离的研究[J]. 力学学报, 1995, 27(Z1): 114-119 |
| |
| 作者姓名： | 李锋 周伟江 王强 汪翼云 |
| |
| 作者单位： | 北京空气动力研究所，100074 |
| |
| 摘 要： | 用数值模拟方法研究了超声速情况下，无限长细长体背风面的涡结构。数值模拟的出发方程和计算格式分别为全Ｎ－Ｓ方程和二阶空间精度的ＴＶＤ格式。数值结果给出了圆锥、半球柱体和椭圆锥在不同攻角下的流场结果。结果表明圆锥在攻角α＝１５°，２０°和２５°时背风面呈现明显的稳定非对称横向分离，而半球柱体和椭圆锥在３２．５°和２５°时背风面均未出现非对称的横向分离结构。
|
| 关 键 词： | 非对称分离 细长体 大攻角流动 数值模拟 |
THE INVESTIGAION OF ASYMMETRIC SEPARAION ON SLENDER BODY |
| |
| Abstract: | Vortex structure on the slender bodies at supsonic flow is investigated by numer-ical method.The Navier-Stokes equations and TVD scheme are applied for the numerical simulation.The results present some characteristics of flow over the slender cone,hemi-spheric cylinder and elliptic cone and show that within the range of angle 1 5° 25°,the asymmetric vortices are formed on the leeside of slender cone and no asymmetric vortices are found for the hemisphere cylinder or elliptic cone at angle of attack of 32.5... |
| |
| Keywords: | asymmetric separation slender body high angle of attack numerical simula-tion |
|
| 点击此处可从《力学学报》浏览原始摘要信息 |
|
点击此处可从《力学学报》下载全文 |
|
