摘要
提出了可压缩可混溶驱动问题的一种全离散有限元格式，压力方程用混合有限元方法逼近，浓度方程用Ｇａｌｅｒｋｉｎ方法逼近，其非线性项系数用Ｄａｒｃｙ速度在Ｇａｕｓ点上的某种展开代入。
An effcient time-stepping procedure is procedured to treat the system describing compressible miscible displacement in a porous medium by employing a mixed finite element method to approximate the pressure and the fluid velocity and a standard Galerkin method to approximate the concentration.An extension of the Darcy velocity along Gauss lines is used in the evaluation of the coeffcients in the Galerkin procedure for the concentration.This results in that the total algorithm have the superconvergence property of the fluid velocity.
出处
《湘潭大学自然科学学报》
CAS
CSCD
1998年第3期41-50,共10页
Natural Science Journal of Xiangtan University
