| 压缩性对细长体涡流非对称发展的影响 |
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| 引用本文： | 杨云军,崔尔杰,周伟江.压缩性对细长体涡流非对称发展的影响[J].航空学报,2004,25(4):333-338. |
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| 作者姓名： | 杨云军 崔尔杰 周伟江 |
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| 作者单位： | 北京空气动力研究所,北京,100074 |
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| 基金项目： | 国家自然科学基金(10032060)资助项目 |
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| 摘 要： | 通过数值方法对大迎角细长体湍流流场的模拟,探讨压缩性对细长体非对称绕流发展的影响。结果表明细长体顶端的极小扰动诱发显著的非对称绕流,非对称的涡系结构沿轴向是逐步演化的;在亚临界横流马赫数区间,马赫数越高非对称越显著;在超临界横流马赫数区间,细长体两侧出现横流激波,非对称的发展被抑制,马赫数越高非对称越弱。
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| 关 键 词： | 大迎角空气动力学 非对称涡 数值模拟 压缩性 |
| 文章编号： | 1000-6893(2004)04-0333-06 |
| 修稿时间： | 2003年6月24日 |
Effects of Compressibility on the Asymmetry Development of Vortex Flow around a Slender Body |
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| YANG Yun-jun,CUI Er-jie,ZHOU Wei-jiang.Effects of Compressibility on the Asymmetry Development of Vortex Flow around a Slender Body[J].Acta Aeronautica et Astronautica Sinica,2004,25(4):333-338. |
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| Authors: | YANG Yun-jun CUI Er-jie ZHOU Wei-jiang |
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| Abstract: | Numerical simulations of turbulent flows around a slender body are conducted to explore the effects of compressibility on the asymmetric development of vortex flow. As a result, the asymmetric flows observed in experiment are simulated successfully by the introduction of a minute bump placed near the body apex. The asymmetric vortex structure grows gradually along the symmetry axis of the slender body. Flow asymmetry is more obvious with a higher subcritical crossflow Mach number, and it is suppressed with an increasing supercritical crossflow Mach number due to the appearance of the crossflow shock waves on the both sides of a slender body. |
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| Keywords: | high incidence aerodynamics asymmetric vortex numerical simulation compressibility |
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