The MIKE 21 multi-cell overland solver is designed for simulating two-dimensional flow in rural and urban areas. The overall idea behind the solver is to solve the modified equations on a coarse grid taking the variation of the bathymetry within each grid cell into account. Results are presented on the grid that takes the fine scale bathymetry into account.
Constructing the fine and the coarse bathymetries
Evaluation of hydraulic parameters within a cell