Forces on Boundaries
The physics interface provides variables to compute the pressure force acting on boundaries. In the shallow water equations the pressure is assumed to be hydrostatic
The pressure force per unit length on a boundary can be obtained integrating along h
The components of the vector Fp are available as variables in the Shallow Water Equations, Time Explicit physics interface and can be accessed in 2D using swe.Fpx and swe.Fpy. In 1D only the swe.Fpx component is defined. Note that these variables represent a force per unit length; the total force on a boundary is obtained integrating over the whole boundary.