Author(s)

R. Wanker, G. Goekler & H. Knoblauch

Abstract

A Euler/Euler model for the numerical simulation of sedimentation effects and sediment transport is presented. The model solves the transient Navier- Stokes equations with the k — e turbulence model. The main advantage of the model is that it is valid in regions of high and low sediment concentra- tion. Bed changes are accounted for directly without any adaption of the computational grid. Validation is carried out in a two-step procedure. First the effects of deposition and reentrainment of particles are investigated in a laboratory flume. The results from the physical and numerical model compare well. A comparison of simulations with experimental values from literature show

Keywords