2D and 3D numericalevaluation of dam-break wave on an obstacle

Abstract

     The aim of this paper is to investigate the capability of the 2D and 3D numerical models to simulate sudden dam break flows in the presence of an obstacle. The 2D-FV model is proposed based on Finite Volume method (FVM) to solve shallow water equations. The commercially-available CFD software package Flow-3D solved Navier-Stock equations along the volume of fluid (VOF) method to track the location of the free surface at the air water interface. Very good agreement of several hydraulic characteristics such as water level profile, flooding map, velocity map and force versus time history due to dam-collapse wave exerted on the obstruction produced by both presented models can be observed.