FEFLOW: A Finite Element Code For Simulating Groundwater Flow, Heat Transfer And Solute Transport

The FEFLOW code is a finite element program package developed at VTT Energy to model flow, solute transport and heat transfer in coupled and non-coupled, steady-state and transient situations, as well as in deterministic and stochastic modes. The code offers a novel finite element technique to model groundwater phenom- ena in fractured crystalline rock. Linear and bi-quadratic one-, two- and three- dimensional finite elements can be used for describing engineered and natural bedrock structures. One of the solute transport models implemented in the pack- age is capable of taking into account matrix diffusion as well. Highly convective cases are handled with different kinds of upwind schemes. The system of linear algebraic equations emerging from the sta