Numerical Simulation Scouring in Cohesive Bed around Circular Piers using Finite Volume Solution of Horizontal Turbulent Flow

Numerical solution of depth averaged equations is one of the best ways for describing of two dimensional horizontal flow and behavior of flow around circular piers. In this paper, governing equations of turbulent shallow water flow are converted to discrete form using overlapping finite volume method on triangular unstructured mesh. The equations include to the depth average equation of continuity and motion for flow model and equation for turbulence model. For simulation of scouring in cohesive bed, the results of the flow solver model are combined with the empirical relations obtained from the E-SRICOS bed scouring method which is a laboratory base method for determining rate of flow induced scouring.