Author(s): Khalid. A. Fattah; Elsadig. M. Sharfi
Linked Author(s):
Keywords: Sediment characteristics parameter; Sediment transporting energy; Alluvial flow equation
Abstract: Gradually varied flow equation is mainly derived for the computation of the flow surface profile in rigid-bed channels. Considering the assumption that, in alluvial channels part of the energy is consumed in the motion of sediment particles, a modified equation is proposed to compute the water surface profile in mobile-bed channels. Three modification factors are considered, theoretically, to modify the usual gradually varied flow equation to be used in computation of flow profile in alluvial channels. These modification factors are thought to be dependent on a sediment characteristics parameter. Conceptual derivation of an alluvial flow equation verified the theoretical approach. The available data of the large-scale experiments at St. Anthony Falls Laboratory, (SAFL), are used to test the validity of the proposed equation.
Year: 2005