Research Article

3D Unsteady Diffusion and Reaction-Diffusion with Singularities by GFEM with 27-Node Hexahedrons

Table 9

Norm from the error made in in .

8 nodes27 nodes8 nodes27 nodes
GFEM/FEMGFEM/FDMGFEM/FEMGFEM/FDMGFEM/FEMGFEM/FDMGFEM/FEMGFEM/FDM

1/6
1/8
1/10
1/16