空气动力学学报2020，Vol.38Issue(2)：299-307,9.DOI:10.7638/kqdlxxb-2020.0038
高超声速6°迎角圆锥边界层背风流向涡稳定性分析
Stability analyses of leeward streamwise vortices for a hypersonic yawed cone at 6 degree angle of attack
摘要
Abstract
The stability of leeward streamwise vortices over a Mach 6 yawed cone with 6 degree angle of attack is investigated by using direct numerical simulation (DNS)and stability analyses including spatial BiGlobal and plane-marching parabolized stability equations (PSE3D).It is found that a pair of strong streamwise vortices inducing low-speed mushroom structure simultaneously emerge in the vicinity of the leeward plane.Theoretical results indicate that both low-frequency sinuous modes and high-frequency varicose modes may play an important role in the breakdown of the streamwise vortices.关键词
流向涡稳定性/高超声速边界层/直接数值模拟/空间BiGlobal方法/PSE3D方法Key words
instability of streamwise vortices/hypersonic boundary layer flow/DNS/spatial BiGlobal method/PSE3D method分类
航空航天引用本文复制引用
陈曦,陈坚强,董思卫,徐国亮,袁先旭..高超声速6°迎角圆锥边界层背风流向涡稳定性分析[J].空气动力学学报,2020,38(2):299-307,9.基金项目
国家重点研发计划(2016YFA0401200) （2016YFA0401200）
国家数值风洞工程(2018-ZT1A03) （2018-ZT1A03）
