• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Spacecraft and Rockets >Experimental Study on Self-Excited and Forced Oscillations of an Oblique Shock Train
【24h】

Experimental Study on Self-Excited and Forced Oscillations of an Oblique Shock Train

机译：斜式冲击波自激和强迫振动的实验研究

获取原文
获取原文并翻译 | 示例
       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Two types of unsteady shock train motion, including self-excited oscillation and forced oscillation, were experimentally studied and compared in this work. The experiments were conducted in a rectangular isolator under Mach 3 incoming conditions. High-speed schlieren technology and high-frequency pressure measurements were adopted to do this research. The mean pressure distributions, the pressure standard deviation distributions, and the spatial frequency distributions were estimated for two types of unsteady shock train oscillations. It was found that the shock train may self-excite oscillations for Mach 3 incoming flow at relatively low frequencies (below 200 Hz) under steady backpressure conditions. With the downstream backpressure forcing, the shock train oscillated in a composite pattern, which was dominated by the imposed frequency content and coupled with the inherently self-excited frequency content. And, the self-excited oscillation was restrained, but was not eliminated, by the forced oscillation.
机译：通过实验研究和比较了两种非定常冲击波运动，包括自激振荡和强迫振荡。实验是在矩形隔离器中以3马赫的入射条件进行的。这项研究采用高速schlieren技术和高频压力测量。针对两种类型的非稳态冲击波振荡，估计了平均压力分布，压力标准偏差分布和空间频率分布。已经发现，在稳定的背压条件下，冲击波列可能会以相对较低的频率（低于200 Hz）自激马赫3进入流的振荡。在下游施加背压的情况下，冲击波以复合模式振动，这主要由施加的频率成分和固有的自激频率成分决定。并且，自激振荡被强制振荡抑制，但没有消除。

著录项

  • 来源
    《Journal of Spacecraft and Rockets》 |2018年第3期|640-647|共8页
  • 作者

    Xiong Bing; Fan Xiao-Qiang; Wang Yi; Tao Yuan;

  • 作者单位

    Natl Univ Def Technol, Sci & Technol Scramjet Lab, Changsha 410073, Hunan, Peoples R China;

    Natl Univ Def Technol, Sci & Technol Scramjet Lab, Changsha 410073, Hunan, Peoples R China;

    Natl Univ Def Technol, Sci & Technol Scramjet Lab, Changsha 410073, Hunan, Peoples R China;

    Natl Univ Def Technol, Sci & Technol Scramjet Lab, Changsha 410073, Hunan, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号