IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 5 - FLUVIAL HYDRAULICS AND RIVER MANAGEMENT : 2D Numerical Simulation of Sediment Transport with Variable Density
2D Numerical Simulation of Sediment Transport with Variable Density
Author : Carmelo Juez, Javier Murillo and Javier Murillo
In this work an approximate augmented Riemann solver is formulated providing an appropriate numerical scheme for mathematical models of free surface flows over erodible bed considering variable density. When numerically modelling these phenomena, conventional methods solve the decoupled hydrodynamic and morphodynamic systems, using splitting techniques. Considering that momentum conservation equations include source terms arising from the variation of the bed level, uncoupled solvers are not adequate for rapidly varying flows, leading to unstable solutions even in cases of moderate transient flows. Therefore, it is necessary to define a coupled formulation for the sediment transport, able to deal with a full range of hydrodynamic and morphodynamic problems. Hence a new Roe-type scheme which includes the presence of variable density and source terms involving erosion\deposition processes is defined on 2D meshes.
File Size : 764,189 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Date Published : 18/07/2016
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