Author(s): Kunitoshi Watanabe; Hossam Nagy; Muneo Hirano
Linked Author(s): Hossam M. Nagy, Kunitoshi Watanabe
Keywords: No Keywords
Abstract: Equivalent roughness and flow resistance of erodible beds in open channel flow in the presence of sand waves are theoretically investigated. Based on boundary layer theory, the geometrical properties of sand waves are introduced as dominant factors affecting on flow resistance. Using linear stability analysis, the length of sand waves is obtained. Applying one dimensional wave equation, the height and steepness of sand waves are obtained. The results of the presented model are significantly better than previous studies. Flow routing model is presented to estimate stage-discharge relation for nonuniform flow.
Year: 1995