The first difficulty encountered in dealing with free surface flows is introduction of appropriate boundary conditions at a free surface. The conditions for two-dimensional rectangular coordinates and for three-dimensional cylindrical coordinates are ...
The first difficulty encountered in dealing with free surface flows is introduction of appropriate boundary conditions at a free surface. The conditions for two-dimensional rectangular coordinates and for three-dimensional cylindrical coordinates are derived using basic tensor relations. Particularly in case of steady flow, the boundary conditions can be simplified through the intrinsic coordinates.