计算物理 ›› 2009, Vol. 26 ›› Issue (3): 378-388.DOI: 10.3969/j.issn.1001-246X.2009.03.007

• 研究论文 • 上一篇    下一篇

计算圆柱绕流拉力系数的自适应迎风有限元方法

马岩, 胡健伟   

  1. 南开大学数学科学学院, 天津 300071
  • 收稿日期:2007-12-07 修回日期:2008-06-03 出版日期:2009-05-25 发布日期:2009-05-25
  • 作者简介:马岩(1979-),female,Tianjin,Ph D Candidate,researehfleld:Computational Mathematics.
  • 基金资助:
    Supported by NSFC(No.10571094)

Adaptive Upwind FEM for Drag-coefficient of Flow Around a Cylinder

MA Yan, HU Jianwei   

  1. School of Mathematical Sciences and LPMC, Nankai University, Tianjin 300071, China
  • Received:2007-12-07 Revised:2008-06-03 Online:2009-05-25 Published:2009-05-25
  • Supported by:
    Supported by NSFC(No.10571094)

摘要: 研究圆柱绕流中拉力系数的自适应计算问题.对二维定常粘性不可压Navier-Stokes方程使用迎风有限元格式,通过引入对偶问题,得到圆柱拉力系数的加权后验误差估计器,实现了自适应网格加密.数值实验表明格式的可行性以及估计器的稳健性.

关键词: Navier-Stokes方程, 圆柱绕流, 拉力系数, 自适应迎风有限元, 后验误差估计

Abstract: We study adaptive computation of drag-coefficient of flow around a cylinder. We adopt upwind finite element schemes for two-dimensional stationary viscous incompressible Navier-Stokes equations, derive weighted posteriori error estimation for drag-coefficient by introducing a dual problem, and implement adaptive mesh refinement. Numerical examples show feasibility of the scheme and robust performance of estimators.

Key words: Navier-Stokes equations, flow around a cylinder, drag-coefficient, adaptive upwind FEM, a posteriori error estimates

中图分类号: