Abstract
In this paper, a numerical model is developed to predict flow in dam reservoirs with orifice gate. We present a high-order Godunov scheme, referred to as the CIP method, for the numerical simulation of flow in a reservoir. This method splits the integration of Navier-Stokes equations into a non-advection and pure advection phase. The solution of the non-advection phase is cubically interpolated and then advected to the solution grid points. Free water surface movement is calculated using kinetic condition of the water surface. Calculated flow and free water surface behavior is compared with an experiment conducted in a flume with an orifice gate. Good agreement between calculated and measured results are found and thus the validity of the numerical model is verified.
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