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Scour Downstream of Free Overfall Spillway

Author(s): Masoud Ghodsian; Ardeshir Azar Faradonbeh; Ali Akbar Abbasi

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Keywords: Free Overfall Spillway; Scour hole; Scour geometry; Outflow jet

Abstract: In order to investigate the effect of different parameters on scour downstream of a free overfall spillway extensive experiments were conducted. It was found that the scour parameters are function of downstream Froude number, ratio of total head to tailwater depth and ratio of sediment mean size to tailwater depth. Accurate dimensionless equations are obtained for prediction of scour parameters.


Year: 1999

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