Concentration and velocity profiles of sediment-water mixtures using the drift flux model

Journal article (2016)

Authors

J.C. Goeree IHC MTI, Offshore and Dredging Engineering - Mechanical, Maritime and Materials Engineering
G.H. Keetels Offshore and Dredging Engineering - Mechanical, Maritime and Materials Engineering
EA Munts IHC MTI
HH Bugdayci IHC Holland Kinderdijk
C. van Rhee Offshore and Dredging Engineering - Mechanical, Maritime and Materials Engineering
Research Group
Offshore and Dredging Engineering (Mechanical, Maritime and Materials Engineering) (TU Delft)
Simulation Modelling Computational fluid dynamics Fluid-particle dynamics Multi-phase systems
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Published Date

2016

Language

English

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Faculty

Mechanical, Maritime and Materials Engineering

Department

Marine and Transport Technology

Research Group

Offshore and Dredging Engineering

Abstract

In this paper, the concentration and velocity profiles of sediment water mixtures for open-channel flows are modelled numerically and validated with experimental results. A continuum approach, the drift flux model, is used. The mixture consists of volume fractions with different particle sizes. Hindered settling is taken into account with the closure relation of Richardson and Zaki. Transport equations are used for sediment transport. Turbulence is modelled with the LES (large eddy simulation) WALE model. The discretization of the transport and Navier-Stokes equations is done with the finite volume method. The Navier-Stokes equations are solved using a fractional step method. The numerical results are compared with experimental results concerning open-channel flows.