科研之友
微信
新浪微博
Facebook
分享链接
摘要
In this paper, a bilinear Petrov-Galerkin finite element method is introduced to solve the variable matrix coefficient elliptic equation with interfaces using nonbody-fitted grid. Different cases the interface cut the cell are discussed. The condition number of the large sparse linear system is studied. Numerical results demonstrate that the method is nearly second order accurate in the L-infinity norm and L-2 norm, and is first order accurate in the H-1 norm.
- 出版日期2019-2
- 单位中国政法大学; 中国石油大学（北京）
