...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Mechanical Science and Technology >A numerical study of secondary flow and large eddies in a driven cavity
【24h】

A numerical study of secondary flow and large eddies in a driven cavity

机译：驱动腔内二次流和大涡的数值研究

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

This paper reports on the application of a newly developed LES flow solver to compute a true three-dimensional flow. The research also investigates the behavior of turbulence statistics by comparing transient simulation results to available data based on experiments and simulations. An extensive discussion on the results such as energy spectrum, velocity profiles and time trace of velocities is carried out in the research as well. Based on the results obtained, the application of the flow solver for a turbulent three-dimensional driven cavity flow by using three grids with varying densities is proven. In addition, the research successfully verifies that in many instances computational results agreed reasonably well with the reference data, and the changes in the statistical properties of turbulence with respect to time are closely related to the changes in the flow structure and strength of vortices. The focus of this study is on the prediction of a sub-grid scale Reynolds shear stress profiles, and the results show that the standard model is able to reproduce general trends measured from experiments. Furthermore, in certain areas inside the cavity the computed shear stress values are in close agreement with experimental data.
机译：本文报告了新开发的LES流量求解器在计算真实三维流量中的应用。该研究还通过将瞬态仿真结果与基于实验和仿真的可用数据进行比较，来研究湍流统计的行为。在研究中还对能量谱，速度分布和速度时间迹等结果进行了广泛的讨论。基于获得的结果，证明了该流动求解器通过使用具有不同密度的三个栅格在湍流三维驱动腔流动中的应用。此外，该研究成功地验证了在许多情况下计算结果与参考数据相当吻合，并且湍流的统计特性随时间的变化与旋流的流动结构和强度的变化密切相关。这项研究的重点是预测亚网格规模的雷诺剪切应力曲线，结果表明标准模型能够重现通过实验测得的总体趋势。此外，在型腔内部的某些区域，计算出的剪切应力值与实验数据非常吻合。

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