This report describes the MIG2DF computer code and presents the direction to use the code effectively. MIG2DF is a two-dimensional, finite element code simulating saturated-unsaturated groundwater flow and radionuclide transport in porous media for the safety evaluation of radioactive waste disposal. Simulations can be performed in a vertical or horizontal cross-section, or an axisymmetric configuration. Heterogeneities and anisotropy of geologic media are handled by taking advantage of the finite element approach. The equation of groundwater flow is based on the Darcy`s law and discretized by the Galerkin finite element method. For the simulations of radionuclide transport, MIG2DF takes account of advection, hydrodynamic dispersion, equilibrium sorption and decay chains. The equations of radionuclide transport are discretized by the Bubnov-Galerkin finite element method. (author).
Kimura, Hideo 
- Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment