An alternating direction Galerkin method combined with a modified method of characteristics for miscible displacement influenced by mobile and immobile water
Ming Cui 1, Hongsen Chen 2, Richard E. Ewing 2, Guan Qin 21 School of Mathematics and System Sciences, Shandong University, Jinan, China 250100
2 Institute for Scientific Computation, Texas A&M University, USA
Received by the editors November 1, 2007 and, in revised form, November 16, 2007.
Numerical approximations are considered for a mathematical model for miscible displacement influenced by mobile and immobile water. A mixed finite element method is adopted to give a direct approximation of the velocity, the concentration in mobile water is approximated by an alternating direction Galerkin finite element method combined with the method of characteristics and the concentration in immobile water is approximated by a standard Galerkin method. Optimal order L-2- and H-1-error estimates are derived.
AMS subject classifications: 35R35, 65M60, 65M15
Key words: alternating direction Galerkin method; modified method of characteristic; finite element methods; error estimate
Email: firstname.lastname@example.org (M. Chui), email@example.com (H. Chen), firstname.lastname@example.org (R. E. Ewing), email@example.com (G. Qin)