...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Computational Physics >Localized artificial diffusivity scheme for discontinuity capturing on curvilinear meshes
【24h】

Localized artificial diffusivity scheme for discontinuity capturing on curvilinear meshes

机译：用于在曲线网眼上的不连续性捕获的局部人工扩散方案

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

A simple and efficient localized artificial diffusivity scheme is developed for the purpose of capturing discontinuities on curvilinear and anisotropic meshes using a high-order compact differencing scheme. The artificial diffusivity is dynamically localized in space to capture different types of discontinuities such as a shock wave, contact surface or material discontinuity. The method is intended for use with large-eddy simulation of compressible transitional and turbulent flows. The method captures the discontinuities on curvilinear and anisotropic meshes with minimum impact on the smooth flow regions. The amplitude of wiggles near a discontinuity and the number of grid points used to capture the discontinuity do not depend on the mesh size. The comparisons between the proposed method and high-order shock-capturing schemes illustrate the advantage of the method for the simulation of flows involving shocks, turbulence and their interactions. The multi-dimensional formulation is tested on a variety of I D and 21), steady and unsteady, different types of discontinuity-related problems on curvilinear and anisotropic meshes. A simplification of the method which reduces the Computational cost does not show any major detrimental effect on the discontinuity capturing under the conditions examined. (C) 2008 Elsevier Inc. All rights reserved.
机译：使用高阶紧凑差分方案捕获曲线和各向异性网格上的不连续性，开发了一种简单富有高效的局部人工扩散方案。人工扩散率在空间中动态地定位，以捕获不同类型的不连续性，例如冲击波，接触表面或材料不连续。该方法旨在用于可压缩过渡和湍流的大涡流模拟。该方法捕获曲线和各向异性网格上的不连续性，对光滑流量区域的最小冲击。靠近不连续性的摆动幅度和用于捕获不连续性的网格点的数量不依赖于网格尺寸。所提出的方法和高阶冲击捕获方案之间的比较说明了涉及冲击，湍流及其相互作用的流动方法的优点。在曲线和各向异性网格上测试多维制剂在各种I D和21）上测试，稳定，不稳定，不同类型的不连续性相关问题。简化降低计算成本的方法对所检查条件下的不连续捕获没有显示出任何主要的不连续性效果。 （c）2008年elestvier Inc.保留所有权利。

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