3 fazli cfd modelde geçici yerel oyulmanin simülasyonu

In this study, a two dimensional time-dependent numerical model is proposed for simulation of temporal local scour profile and flow characteristics beneath horizontal turbulent jets downstream of rigid apron. The temporal scour profile was simulated by a3-phase mixture (air, water, sand) model. The Renormalized Group (RNG) k-? turbulence model is used as a closure model. The flow conditions are assumed as unsteady. A two dimensional virtual numerical flume was composed using FLUENT CFD package. The Navier-Stokes equations for incompressible and viscous fluids were discretized by using finite volume method. The proposed numerical scheme was run for different experimental conditions recorded by others. Comparison of the proposed numerical model?s predictions to the observed ones showed a good agreement which is an indication of the precision of the proposed numerical scheme. The overall results encouraged the use of the present model in simulation of movable (erodible) bed profiles beneath turbulent water jets.