Abstract
Abstract An unstructured mesh has been developed to simulate both steady and unsteady flow conditions over a spillway. Discretization has been done based on finite volume method for a two-dimensional depth averaged model. Different hydraulic parameters such as water depth profile, velocity, Froude number, shear stress were calculated and presented in detail for both scenarios. Finally, Normalized Shields distribution calculated wherein areas prone to deposition and erosion were estimated accordingly. SRH-2D Model were used as a hydrodynamic tool to investigate the effects of steady and unsteady state flow conditions overflown over the spillway of a dam. Flood plain delineation is crucial both at coastal areas as well as river neighborhood structures. In either case, it will give us a strong sense of buffer zone estimation. This buffer zone acts as a safety distance from the flood in case of water crises.
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