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超声速平板边界层中流向涡的生成条件

王乾 黄章峰

王乾, 黄章峰. 超声速平板边界层中流向涡的生成条件[J]. 航空动力学报, 2022, 37(4): 886-896. doi: 10.13224/j.cnki.jasp.20210164
引用本文: 王乾, 黄章峰. 超声速平板边界层中流向涡的生成条件[J]. 航空动力学报, 2022, 37(4): 886-896. doi: 10.13224/j.cnki.jasp.20210164
WANG Qian, HUANG Zhangfeng. Generation conditions of streamwise vortex in supersonic flat-plate boundary layer[J]. Journal of Aerospace Power, 2022, 37(4): 886-896. doi: 10.13224/j.cnki.jasp.20210164
Citation: WANG Qian, HUANG Zhangfeng. Generation conditions of streamwise vortex in supersonic flat-plate boundary layer[J]. Journal of Aerospace Power, 2022, 37(4): 886-896. doi: 10.13224/j.cnki.jasp.20210164

超声速平板边界层中流向涡的生成条件

doi: 10.13224/j.cnki.jasp.20210164
基金项目: 国家自然科学基金(12072232); 国家重大项目(GJXM92579)
详细信息
    作者简介:

    王乾(1995-),男,硕士生,主要从事流动稳定性研究。

    通讯作者:

    黄章峰(1977-),男,教授,博士,主要从事流动稳定性、转捩及湍流、直接数值模拟方向的研究。E-mail:hzf@tju.edu.cn

  • 中图分类号: V211.3

Generation conditions of streamwise vortex in supersonic flat-plate boundary layer

  • 摘要: 针对马赫数为4.5的超声速平板边界层,基于线性稳定性理论(LST)选取初始扰动组合,通过直接数值模拟(DNS),计算了第一模态不稳定波扰动组合沿流向演化生成流向涡的过程。采用改进Omega-Liutex旋涡识别方法进行涡识别,结合流向不同位置截面的流线图,分析了流向涡的生成特性。根据流向涡在zy截面内的流线特征,提出了流向涡的生成条件,研究发现:流向涡可以直接通过一对展向对称的第一模态不稳定斜波扰动与基本流叠加得到,不是必须经过非线性作用。

     

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出版历程
  • 收稿日期:  2021-04-10
  • 刊出日期:  2022-04-28

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