数学物理学报

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可压可溶两相驱动问题的迎风混合元方法

王焕; 袁益让   

  1. 中国计量学院理学院 杭州 310018
  • 收稿日期:2005-08-17 修回日期:2006-07-12 出版日期:2007-02-25 发布日期:2007-02-25
  • 通讯作者: 王焕
  • 基金资助:
    国家重点基础研究项目(G1999030803)和国家自然科学基金(10271066,19972023)资助

An Upwind-mixed Finite Element Method for Compressible Miscible Displacement

Wang Huan; Yuan Yirang   

  1. School of Science, China Jiliang University, Hangzhou 310018
  • Received:2005-08-17 Revised:2006-07-12 Online:2007-02-25 Published:2007-02-25
  • Contact: Wang Huan

摘要: 研究迎风混合元方法求解多孔介质中含弥散的可压缩可混溶两相渗流驱动问题, 利用变分形式和先验估计的理论技巧,得到饱和度近似的L2模和压力近似的H1模最优阶误差估计,数值实验证实该方法在克服数值扩散和非物理振荡方面是很有效的.

关键词: 两相驱动, 迎风混合元方法, 误差估计, 弥散

Abstract: Consider an upwind-mixed finite element method for computing the
two-phase compressible miscible displacement with dispersion in porous media. Optimal-order error estimates for concentration approximation in L2 and pressure approximation in H1 are derived. Numerical experiment proves the method is effective for avoiding numerical diffusion and nonphysical oscillations.

Key words: Two-phase displacement, Upwind-mixed finite element method, Error estimates, Dispersion

中图分类号: 

  • 65M12