QUASI-THREE-DIMENSIONAL MATHEMATICAL MODELING OF MORPHOLOGICAL PROCESSES BASED ON EQUILIBRIUM SEDIMENT TRANSPORT

My. M. Charafi (), A. Sadok, A. Kamal and A. Menai
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My. M. Charafi: Hassan II University, Department of Physics, Faculty of Sciences Ain Chock, B.P. 5366, Maarif Casablanca, Morocco;
A. Sadok: Ecole Hassania des Travaux Publics, km 7, Route d'Eljadida, Casablanca, Morocco;
A. Kamal: CRR/EE, LPEE, km 7, Route d'Eljadida, Casablanca, Morocco
A. Menai: Hassan II University, Department of Physics, Faculty of Sciences Ain Chock B.P. 5366, Maarif Casablanca, Morocco

International Journal of Modern Physics C (IJMPC), 2000, vol. 11, issue 07, 1425-1436

Abstract: A quasi-three-dimensional mathematical model has been developed to study the morphological processes based on equilibrium sediment transport method. The flow velocities are computed by a two-dimensional horizontal depth-averaged flow model (H2D) in combination with logarithmic velocity profiles. The transport of sediment particles by a flow water has been considered in the form of bed load and suspended load. The bed load transport rate is defined as the transport of particles by rolling and saltating along the bed surface and is given by the Van Rijn relationship (1987). The equilibrium suspended load transport is described in terms of an equilibrium sediment concentration profile (ce) and a logarithmic velocity(u). Based on the equilibrium transport, the bed change rate is given by integration of the sediment mass-balance equation. The model results have been compared with a Van Rijn results (equilibrium approach) and good agreement has been found.

Keywords: Modeling; Hydrodynamic; Sediment; Transport; Equilibrium; Logarithmic Velocity (search for similar items in EconPapers)
Date: 2000
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DOI: 10.1142/S0129183100001267

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