Based on the Galerkin FEM formulation given in Section 7.5, a computer program has been developed using the FORTRAN for the Laplace equation. The program can be used for homogeneous and non-homogeneous media problems. The program is tested with the problem mentioned below. The detailed program listing is given in Appendix G.
Determine the potential variation in a homogeneous iso-tropic porous media of length 100 m and width 30 m. As shown in Figure 7.23, the potential at one side of the porous media is 300 m and the opposite side is 100 m. Other two sides of the section are considered as impervious.
The problem is solved as a two-dimensional problem using the Laplace ...