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超音速后掠椭圆柱横流定常涡的不稳定特性及转捩预测

杨志洋 赵磊 罗纪生

杨志洋, 赵磊, 罗纪生. 超音速后掠椭圆柱横流定常涡的不稳定特性及转捩预测[J]. 应用数学和力学, 2017, 38(8): 853-862. doi: 10.21656/1000-0887.370303
引用本文: 杨志洋, 赵磊, 罗纪生. 超音速后掠椭圆柱横流定常涡的不稳定特性及转捩预测[J]. 应用数学和力学, 2017, 38(8): 853-862. doi: 10.21656/1000-0887.370303
YANG Zhi-yang, ZHAO Lei, LUO Ji-sheng. Instability and Transition Prediction of Stationary Crossflow Vortices Over Supersonic Swept Elliptic Cylinders[J]. Applied Mathematics and Mechanics, 2017, 38(8): 853-862. doi: 10.21656/1000-0887.370303
Citation: YANG Zhi-yang, ZHAO Lei, LUO Ji-sheng. Instability and Transition Prediction of Stationary Crossflow Vortices Over Supersonic Swept Elliptic Cylinders[J]. Applied Mathematics and Mechanics, 2017, 38(8): 853-862. doi: 10.21656/1000-0887.370303

超音速后掠椭圆柱横流定常涡的不稳定特性及转捩预测

doi: 10.21656/1000-0887.370303
基金项目: 国家自然科学基金(重点项目)(11332007)
详细信息
    作者简介:

    杨志洋(1993—),男,硕士生(E-mail: y799796151@163.com);赵磊(1987—),男,博士生(E-mail: zhaolei_tju@163.com);罗纪生(1954—2017),男,教授,博士生导师(通讯作者. E-mail: jsluo@tju.edu.cn).

  • 中图分类号: O354.3;V224+.3

Instability and Transition Prediction of Stationary Crossflow Vortices Over Supersonic Swept Elliptic Cylinders

Funds: The National Natural Science Foundation of China (Key Program)(11332007)
  • 摘要: 实验发现,一定条件下超声速后掠圆柱的前半圆上可能发生定常涡引起的转捩.为了模拟高空超音速飞行器后掠翼前缘,以无限展向长度后掠椭圆柱为模型,基于eN方法,根据积分的N值,分析了迎风轴长度、Reynolds(雷诺)数、后掠角和Mach(马赫)数等参数的变化对超音速后掠椭圆柱横流定常涡不稳定性的影响.研究结果表明,后掠椭圆柱的迎风轴长度增加,会使横流定常涡的不稳定性增强;Reynolds数增大,使横流定常涡模态的不稳定性增强;不稳定性的强度与Reynolds数的大小为近似线性关系;飞行高度增加,Mach数变大,使横流定常涡的不稳定性变弱;后掠角在一定范围内的变化对横流定常涡的不稳定性影响不大.这些结果有助于提高对高空超音速飞行器翼前缘转捩机理的认识,为横流转捩预测提供理论指导
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出版历程
  • 收稿日期:  2016-10-09
  • 修回日期:  2016-11-04
  • 刊出日期:  2017-08-15

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