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脉冲射流控制现象的自激-外激耦合模型

陆惟煜 黄国平 杨雨轩

陆惟煜, 黄国平, 杨雨轩. 脉冲射流控制现象的自激-外激耦合模型[J]. 航空动力学报, 2022, 37(1): 181-190. doi: 10.13224/j.cnki.jasp.20210069
引用本文: 陆惟煜, 黄国平, 杨雨轩. 脉冲射流控制现象的自激-外激耦合模型[J]. 航空动力学报, 2022, 37(1): 181-190. doi: 10.13224/j.cnki.jasp.20210069
LU Weiyu, HUANG Guoping, YANG Yuxuan. Coupling model of self- and external-excitation for phenomena in pulsed jet flow control[J]. Journal of Aerospace Power, 2022, 37(1): 181-190. doi: 10.13224/j.cnki.jasp.20210069
Citation: LU Weiyu, HUANG Guoping, YANG Yuxuan. Coupling model of self- and external-excitation for phenomena in pulsed jet flow control[J]. Journal of Aerospace Power, 2022, 37(1): 181-190. doi: 10.13224/j.cnki.jasp.20210069

脉冲射流控制现象的自激-外激耦合模型

doi: 10.13224/j.cnki.jasp.20210069
基金项目: 江苏省自然科学基金(BK20200680); 国家自然科学基金(52106046)
详细信息
    作者简介:

    陆惟煜(1989-),男,讲师,博士,主要从事非定常流动控制技术研究。

  • 中图分类号: V231.3

Coupling model of self- and external-excitation for phenomena in pulsed jet flow control

  • 摘要: 为了阐释脉冲射流控制中出现的频率依赖性、位置依赖性、条件同步性及强度依赖性这4种现象,在弱非线性稳定性理论的基础上,建立了一种简化的自激-外激耦合模型,用于近似描述脉冲射流流动控制现象。该模型由偏微分方程组构成,特定情形下可简化为常微分方程进行求解,通过将求解结果与脉冲射流控制的数值模拟及实验数据进行对比,研究发现:该自激-外激耦合模型能定性或半定量反映实际脉冲射流控制中出现的4种现象。结合模型的分析表明:脉冲射流主要利用流动的非线性不稳定性机制,通过使流场与非定常激励产生同步运动,促进主流和分离流间的动量传递,从而实现自激-外激耦合流动控制作用,并表现出脉冲射流控制的4种典型现象。

     

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出版历程
  • 收稿日期:  2021-02-17
  • 刊出日期:  2022-01-28

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