Author(s): Martin F. Burgisser; Peter Rutschmann
Linked Author(s): Peter Rutschmann
Keywords: Numerical modelling; Navier-Stokes equations; Free surface flow; FiniteElement Method; Design of hydraulic structures; Flow over weirs; Spillway geometries
Abstract: An iterative solution to the incompressible two dimensional vertical (2DV) steady Navier-Stokes Equations (NSE) is used to solve for the a priori unknown free surface, the velocity and the pressure fields. The entire waterbody is covered by a unstructured finite element grid which is locally refined. The solution method is tested for different discharges on two standard spillway geometries. The results agree with available experimental data.