Author(s)

M.A. Sbai, A. Larabi & F. De Smedt

Abstract

Management of groundwater resources in coastal aquifers involves the pre- diction of saltwater intrusion, in relation to groundwater flow under various conditions. A numerical technique is developed for solving such problems in steady and transient conditions with the finite element method. The model is based on a sharp interface approach, assuming fresh and salt water as im- miscible. However, the finite element mesh remains fixed and the problem is solved by iteratively adjusting the moving boundaries. This is achieved without fully reconstructing the conductance and capacitance coefficient matrix, which makes the method computationally fast. Several t

Keywords