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等离子体激励器控制圆柱绕流的实验研究

张鑫 黄勇 李华星

张鑫, 黄勇, 李华星. 等离子体激励器控制圆柱绕流的实验研究[J]. 力学学报, 2018, 50(6): 1396-1405. doi: 10.6052/0459-1879-18-279
引用本文: 张鑫, 黄勇, 李华星. 等离子体激励器控制圆柱绕流的实验研究[J]. 力学学报, 2018, 50(6): 1396-1405. doi: 10.6052/0459-1879-18-279
Zhang Xin, Huang Yong, Li Huaxing. FLOW CONTROL OVER A CIRCULAR CYLINDER USING PLASMA ACTUATORS[J]. Chinese Journal of Theoretical and Applied Mechanics, 2018, 50(6): 1396-1405. doi: 10.6052/0459-1879-18-279
Citation: Zhang Xin, Huang Yong, Li Huaxing. FLOW CONTROL OVER A CIRCULAR CYLINDER USING PLASMA ACTUATORS[J]. Chinese Journal of Theoretical and Applied Mechanics, 2018, 50(6): 1396-1405. doi: 10.6052/0459-1879-18-279

等离子体激励器控制圆柱绕流的实验研究

doi: 10.6052/0459-1879-18-279
基金项目: 1) 装备预先研究资助项目(51313010204).
详细信息
    作者简介:

    null

    2) 张鑫,助理研究员,主要研究方向:等离子体流动控制. lookzx@mail.ustc.edu.cn

    通讯作者:

    张鑫

  • 中图分类号: V211.A;

FLOW CONTROL OVER A CIRCULAR CYLINDER USING PLASMA ACTUATORS

  • 摘要: 为了发展新型移动附面层控制技术,提升流动控制效率,采用粒子图像测速技术,开展了基于对称布局等离子体气动激励的圆柱绕流控制研究,获得了静止空气下,对称布局激励器诱导流场的演化过程,评估了来流条件下等离子体控制效果,通过等离子体诱导涡实现了虚拟移动附面层控制,分析了诱导涡随时间演化的过程,揭示了圆柱绕流等离子体控制机理.结果表明:(1)在静止空气下,对称布局激励器在刚启动瞬间,会在暴露电极两侧诱导产生一对旋转方向相反的启动涡;随着时间的推移,启动涡逐渐向远离壁面的方向运动;随后,激励器在暴露电极两侧产生了两股速度近似相等,方向相反的诱导射流,诱导射流在柯恩达效应的影响下,朝壁面方向发展.(2)当激励电压峰峰值为19.6 kV,激励频率3kHz时,施加等离子体气动激励后,圆柱脱落涡得到了较好抑制,圆柱阻力系数减小了21.8%;(3)在来流作用下,对称布局激励器在靠近来流一侧,诱导产生了较为稳定的涡结构.诱导涡通过旋转、运动,促进了壁面附近低能气流与主流之间的掺混,抑制了圆柱绕流流场分离,实现了"虚拟移动附面层控制"效果.与传统移动附面层控制技术相比,基于等离子体气动激励的新型移动附面层控制技术不需要复杂、笨重的机构,不会带来额外的阻力,具有潜在的应用前景.

     

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出版历程
  • 收稿日期:  2018-08-23
  • 刊出日期:  2018-11-18

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