| 轴对称旋成体流动结构的数值研究 |
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| 引用本文： | 王刚,梁新刚.轴对称旋成体流动结构的数值研究[J].空气动力学学报,2006,24(2):175-181. |
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| 作者姓名： | 王刚 梁新刚 |
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| 作者单位： | 北京理工大学理学院,北京,100081;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 |
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| 摘 要： | 利用N-S方程模拟了旋成体的绕流过程。旋成体流场由不同层次的涡结构组成,包括主涡、二次涡t、ertiary涡、螺旋涡、羊角涡、U型马蹄涡。文中清晰地展示了这些结构,简要分析了各类结构的特性和功能,强调了亚结构和三维结构在流态发展与流场演变中的作用。
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| 关 键 词： | 旋成体 流动结构 螺旋涡 马蹄涡 数值模拟 大迎角空气动力学 |
| 文章编号： | 0258-1825（2006）02-0175-07 |
| 收稿时间： | 2005-02-08 |
| 修稿时间： | 2005-02-082005-05-15 |
Numerical study of flow structure on rotational symmetrical slender bodies |
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| WANG Gang,LIANG Xin-gang.Numerical study of flow structure on rotational symmetrical slender bodies[J].Acta Aerodynamica Sinica,2006,24(2):175-181. |
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| Authors: | WANG Gang LIANG Xin-gang |
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| Institution: | 1. Belting Institute of Technology, Belting 100081, China ; 2. School of Aerospace, Tsinghua University, Beijing 100084, China |
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| Abstract: | Flow around a cylinder with a sharp nose and a blunt nose at incidences was numerical simulated using time-dependent compressible laminar Navier-Stokes equations with a finite volume method incorporating a third-order-accurate discretization scheme.The structures of main vortices,secondary vortices,tertiary vortices,spiral vortices,Werle vortices and U-shaped horseshoe vortices are clearly displayed in this paper.Their characteristics and functions are briefly analyzed,and the effects of the hypo-structure and three-dimensional structure on the flow development are emphasized. |
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| Keywords: | slender body flow structure spiral vortex horseshoe vortex numerical simulation high angle of attack aerodynamics |
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