Numerical simulation of scouring process under spillway

摘要

The scour problem under spillway has received a lot of attention in the past decades. for such a complicated problem, most numerical modeling presented only dealt with the water flows in equilibrium scour pools without considering the changing topography of the riverbed. In this paper, the dynamic process is handled with moving grids, and the gogver- ning equations are solved using finite volume method with co- located variable arrangement on boundary-fitted non-orthogo- nal grids. The results show that the given method is efficient, with which the variation of flow parameters, such as mean ve- locity and mean pressure, etc., can be computed correctly.