...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Bulletin of the American Physical Society >APS -70th Annual Meeting of the APS Division of Fluid Dynamics- Event - Reynolds-Averaged Navier-Stokes Modeling of Weak, Moderate, and Strong Shock-Induced Richtmyer-Meshkov Turbulent Mixing
【24h】

APS -70th Annual Meeting of the APS Division of Fluid Dynamics- Event - Reynolds-Averaged Navier-Stokes Modeling of Weak, Moderate, and Strong Shock-Induced Richtmyer-Meshkov Turbulent Mixing

机译：APS -70TH液体动力学APS划分年会 - 雷诺平均海军 - 斯托克斯建模弱，中等，强烈的冲击诱导的Richtmyer-Meshkov湍流混合

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Turbulent mixing of ideal gases (air and SF$_{6}$) induced by reshocked Richtmyer--Meshkov instability with Atwood number $At = -0.67$ (initially heavy-to-light) and shock Mach numbers $Ma = 1.05$, $1.25$, $1.56$, $3.00$, and $5.00$ is simulated using a weighted essentially nonoscillatory implementation of a multicomponent, two-equation Reynolds-averaged Navier--Stokes model. This study continues the previous application of this model to the $Ma = 1.24$, $1.50$, and $1.98$ Vetter--Sturtevant, $Ma = 1.45$ Poggi et al., and $Ma = 1.20$ Leinov et al. air/SF$_{6}$ cases to much larger Mach numbers. The cases considered are inspired by a large-eddy simulation study of transition to turbulence in singly-shocked Richtmyer--Meshkov instability over a progression of small-to-large Mach numbers by Lombardini, Pullin and Meiron (2012). Mixing layer widths, as well as various spatial mean and turbulent field profiles and statistics, are compared among the different Mach number cases and discussed. Other quantities signifying the intensity of the turbulence, such as the turbulent Reynolds number, are also compared and discussed. Turbulent transport equation budgets are used to assess the relative importance of the mechanisms contributing to turbulent mixing as the Mach number increases.
机译：由Reshocked Richtmyer引起的理想气体（空气和SF $ _ {6} $）的湍流混合 - Meshkov不稳定性，Atwood Number $ AT = -0.67 $（最初重击）和冲击马赫号$ MA = 1.05 $使用加权基本上非振动实现，每次等式雷诺平均Navier - Stokes模型的加权模拟，模拟1.25美元，1.56美元，$ 3.00 $和5.00美元。本研究继续将该模型应用于$ MA = 1.24 $，1.50美元和1.98美元$ 5.98 $ vetter - Sturtevant，$ MA = 1.45 $ Poggi等人。和MA = 1.20 $ Leinov等。 AIR / SF $ _ {6} $案例到更大的MACH编号。考虑的案件受到单次震惊的Richtmyer - Meshkov毫无稳定性的大涡流转型的大型仿真研究，通过Lombardini，Pullin和Meiron（2012）的小到大马赫编号。在不同的马赫数情况下比较混合层宽度，以及各种空间均值和湍流场谱和统计数据，并讨论。还比较和讨论了涉及湍流的强度，例如湍流雷诺数的其他量。由于马赫数增加，湍流传输方程预算用于评估导致湍流混合的机制的相对重要性。

著录项

相似文献

  • 外文文献
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