Author(s)

M.H. Li, H.P. Cheng, and G.T. Yeh

Abstract

This paper presents an approach combining the multigrid method and the adaptive local grid refinement to solve 3-D density-dependent flow and transport equations in the subsurface. This combination is to provide a collaborated numerical strategy which is computationally efficient and accurate. With the multigrid method, the computational efficiency is achieved through its <9(n) computations in solving a matrix equation with n unknowns. With the adaptive local grid refinement, the computational accuracy is improved without introducing unaffordable efforts by only refining the non-smooth region. In addition, the

Keywords