ABSTRACT
The shallow water model in FLOW-3D can consist, analog to the 3D model, of multiple mesh blocks. The mesh blocks must comprise of two vertical cells. It is important to arrange the mesh in a way, that all the geometry and all the water is mapped in the bottom cell and the cell is not filled more than 90% (component and water). This is easy to achieve by defining the appropriate cell height of the bottom mesh layer. Another requirement is the definition of gravity in negative z-coordinate. Only the horizontal velocities in x-and y-directions are solved. The calculation of the pressure is reduced to a hydrostatic profile. To calculate the bottom shear stress the following approach is used.
