Environmental Erosion Research Journal

In nature, a direct route to the river is uncommon. Most rivers have channels that bend wherea complex scour pattern dominates. We have intended to study the behavior patterns necessary to scour a river known as the dominant bends. Numerical models are powerful instruments for the prediction of such areas and can provide a good understanding of these areas. In the present study we have used a three-dimensional numerical model Flow-3D to determine the effects of parameter U/Uc, flow rate and channel width of the scour pattern at a 90 degree arc of the moving beds. The results were compared with experimental data. Analysis of results relevant to scour pattern in cross sections and different plans were among other points introduced in this paper.