Evaluating Methods for 3D CFD Models in Sediment Transport Computations

Reference Concentration for Shelf Sediment Transport Models

My long-term goals are to advance understanding of sediment transport processes. In this context, the long-term goal of this project is to advance understanding of the reference concentration, i.e. concentration of suspended sediments at a small distance above the seafloor. The scientific interest is in relating this reference concentration to the forcing conditions of waves and currents. The n...

Quasi-3D Modeling of Sediment Transport for Coastal Morphodynamics

A 3D Two-Phase Numerical Model for Sediment Transport

We have developed a three dimensional numerical model based on the two-phase equations to study the bed-load transport Chauchat and Médale (2009). We have considered two formulations of the model based on a two fluid or a single mixed-fluid description. The governing equations are discretized by a finite element method and a penalisation method is introduced to cope with the incompressibility c...

Anisotropic mesh adaptation for CFD computations

Unstructured mesh adaptation is now widely used in numerical simulations to improve the accuracy of the solutions as well as to capture the behavior of physical phenomena. In this paper, we propose a general purpose error estimate based on the interpolation error that produces an anisotropic metric map used to govern the mesh element creation. Application examples of CFD computations are given ...

Sediment Transport in Unsteady Flow Conditions

Sediment transport under unsteady flow condition is studied experimentally. In the first step, sediment transport under different steady flow conditions was measured and an empirical equation was derived for its calculation. In the next step, two continuous and three stepwise hydrographs were generated in the flume, and their sediment transport rate was measured. The continuous hydrographs were...