重味付残差法による臨海域帯水層内の塩水侵入解析

抄録

A weighted residuals method based on Galerkin's finite element technique is applied to investigate the saltwater intrusion and dispersion in the coastal aquifer. The salt-water intrusion phenomenon was treated as the density-dependent flow of two immiscible and miscible fluids.
The mathematical formulation of miscible densitydependent flow consists of the coupled form of the flow equation and the convective diffusion equation.
The present analysis uses two dimensional quadrilateral, isoparametric elements with a linear basis function for piezometric head, salt concentration and velocity components.
From the comparison of the numerical results with the experimental results, this procedure can handle the saltwater intrusion in the coastal aquifer.