Abstract
This paper presents numerical simulations of the water flow in the case of an emergency at the protective hydraulic engineering constructions. A mathematical model for simulation of flooding flow is based on Navier-Stokes equations coupled with the volume-of-fluid (VOF) method. The 2D computational domain is discretized via the finite volume method (FVM). For turbulence modelling, the k-ε model is chosen. The interface between air and liquid is captured by CICSAM (compressive interface capturing scheme for arbitrary meshes) scheme, whereas the semi-implicit method for pressure linked equations (SIMPLE) scheme is applied for the pressure-velocity coupling. A second order upwind discretization scheme is used for the momentum equations. The verification of the present results is produced on a single flooding water body. The results show a good agreement with previous simulations and experiments of different authors. Then the simulation is expanded and analysed for cases with two different types of obstacles. Numerical simulation results are illustrated by figures and tables.