...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of energy and power engineering >Hybrid RANS/LES Simulations of Two and Three Dimensional Supersonic Cavity Flows
【24h】

Hybrid RANS/LES Simulations of Two and Three Dimensional Supersonic Cavity Flows

机译：二维和三维超声腔流的混合RANS / LES模拟

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

Supersonic unsteady flows of two and three dimensional cavities, which have the same basic measures, length, depth and aft wall angle, are investigated numerically by using hybrid RANS/LES (Reynolds-Averaged Navier-Stokes/Large-Eddy Simulation) method. In particular, the mass exchange and oscillation characteristics of the cavities are analyzed and compared. It is shown that the two and three dimensional cavities have almost the same residence time except that the three dimensional one has a little larger mass decay at beginning, which may attribute to the influence of the streamwise vortices. The two dimensional cavity has three dominant frequencies while the three dimensional one has only one oscillation dominant frequency, that is, the three dimensional effects simplify the oscillation modes in the cavity. The distributions of oscillation energy are approximately universal in the transverse and spanwise directions. However, the oscillation energy in the streamwise direction shows a hybrid monotone/periodic distribution, which may be caused by the streamwise-propagating pressure waves.
机译：通过使用混合RANS / LES（雷诺平均Navier-Stokes /大涡模拟）方法对二维和三维腔的超声速非定常流动进行了数值研究，这些基本尺度，长度，深度和后壁角均相同。特别地，分析和比较腔的质量交换和振动特性。结果表明，二维和三维腔具有几乎相同的停留时间，只是三维腔在开始时具有稍大的质量衰减，这可能归因于沿流涡旋的影响。二维空腔具有三个主导频率，而三维空腔只有一个振荡主导频率，也就是说，三维效应简化了空腔中的振动模式。振荡能量的分布在横向和翼展方向上大致通用。但是，沿流向的振荡能量显示出混合的单调/周期性分布，这可能是由沿流向传播的压力波引起的。

著录项

  • 来源
    《Journal of energy and power engineering》 |2011年第2期|p.97-104|共8页
  • 作者

    H.B. Wang; M.B. Sun; H.Y. Wu; Z.G. Wang;

  • 作者单位

    College of Aerospace and Material Engineering, National Univ. of Defense Technology, Changsha 410073, China;

    College of Aerospace and Material Engineering, National Univ. of Defense Technology, Changsha 410073, China;

    College of Aerospace and Material Engineering, National Univ. of Defense Technology, Changsha 410073, China;

    College of Aerospace and Material Engineering, National Univ. of Defense Technology, Changsha 410073, China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    hybrid rans/les; supersonic; cavity; mass exchange; oscillation;

    机译：杂交种超音速腔大众交流;振荡;

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