...
首页> 外文期刊>Journal of Fluids and Structures >A computational study of supersonic disk-gap-band parachutes using Large-Eddy Simulation coupled to a structural membrane
【24h】

A computational study of supersonic disk-gap-band parachutes using Large-Eddy Simulation coupled to a structural membrane

机译:利用大涡模拟结合结构膜对超音速磁盘间隙带降落伞的计算研究

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       

摘要

Large-scale fluid-structure interaction simulations of compressible flows over flexible supersonic disk-gap-band parachutes are compared with matching experimental results. We utilize adaptive mesh refinement, large-eddy simulation of compressible flow coupled with a thin-shell structural finite-element model. The simulations are carried out in the regime where large canopy-area oscillations are present, around and above Mach 2, where strong nonlinear coupling between the system of bow shocks, turbulent wake and canopy is observed. Comparisons of drag history and its dependence on Mach number are discussed. Furthermore, it is observed that important dynamical features of this coupled system can only be reproduced when sufficient grid resolution is used. Lack of resolution resulted in incorrect flow-physics prediction and, consequently, incorrect fluid-structure interaction coupling.
机译:将柔性超声速盘间隙带降落伞上可压缩流的大规模流体-结构相互作用模拟与匹配的实验结果进行了比较。我们利用自适应网格细化,可压缩流的大涡模拟以及薄壳结构有限元模型。该模拟是在马赫数2附近和上方存在大的冠层区域振动的状态下进行的,在该状态下,船首冲击,湍流和冠层系统之间存在强烈的非线性耦合。讨论了阻力历史及其对马赫数的依赖性的比较。此外,可以观察到,只有在使用足够的网格分辨率时才能重现此耦合系统的重要动态特征。缺乏分辨率会导致错误的流物理学预测,从而导致错误的流固耦合耦合。

著录项

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