Transitory distribution of the suspended sediment in a unidirectional non-uniform flow

Abstract

Erosion, Mud, Sand, Model - © Editions Paralia CFLHow to cite this paper: SANCHEZ M. (2015). Abstract:A 1DH modeling is implemented to study a particular case of transport in suspension along a channel corresponding to a 2DV problem. In order to include the vertical dimension, a model named - is used. This latter was developed to describe the vertical distribution of suspended sediment in a flow corresponding to an unsteady and/or non-uniform state, and including deposition and resuspension phenomena (SANCHEZ, 2013). Results show that in some regions of the studied domain, the - model describing the vertical distribution of suspended sediment, can be simplified because its two parameters ( and ) remain constant. (25-27 November 2015) in Ferrara, Italy. Received 02 October 2015, accepted 11 December 2015, available online 30 January 2016. s02.2 : Revue Paralia -Vol. 8 (2015 1. Introduction Current 2DH hydrodynamic models allow applications on very long periods with fine geometric scale meshes. For these reasons, practical applications on real problems make extensive use of 2DH models. If the variables of the problem are properly integrated onto the vertical coordinate, the results of these models are close to those from the best 3D models. In several types of problem, the vertical dimension can be considered in a realistic and precise manner by this way. Here are two examples: a) In the wave propagation models describing the vertical distribution of the velocity potential by Stokes-Airy theory (BERKHOFF, 1972). b) In hydrodynamic flow models that integrate onto the full depth the effect of shear stress on the mean flow velocities (SAINT-VENANT, 1871).