Coupled flood and sediment transport modelling with adaptive
mesh refinement
Coupled flood and sediment transport modelling with adaptive
mesh refinement
Coupled flood and sediment transport modelling in large-scale domains has for long been hindered by the high computational cost. Adaptive mesh refinement is one of the viable ways to solving this problem without degrading the accuracy. This goal can be accomplished through mesh adaptation, e.g., mesh coarsening and refining based on the dynamic regime of the flow and sediment transport along with bed evolution. However, previous studies in this regard have been limited to cases either without involving sediment transport or featuring flow-sediment-bed decoupling and the assumption of sediment transport capacity,which are not generally justified. Here, a coupled hydrodynamic and non-capacity sediment transport model is developed on adaptive non-uniform rectangular mesh. The proposed model is validated against experimental tests and numerical results based on the fixed meshes. It is demonstrated that the proposed model can properly capture shock waves, resolve the wetting/drying transition and reproduce morphological evolution. Compared with models based on the fixed meshes, the proposed model features great advantage in computational efficiency and holds promise for wide applications
shallow water flow, sediment transport, adaptive mesh
1425-1438
Huang, Wei
bd1464ed-9914-4bab-8eb0-37e1bd50f9bf
Cao, Zhixian
7642b644-eaa0-4ace-9356-3f75bf8e9e41
Pender, Gareth
f392aa23-1374-498e-a0fc-b9d97d1638de
Liu, QingQuan
caf39a36-0ac8-42da-8305-765864e946ab
Carling, Paul A.
8d252dd9-3c88-4803-81cc-c2ec4c6fa687
August 2015
Huang, Wei
bd1464ed-9914-4bab-8eb0-37e1bd50f9bf
Cao, Zhixian
7642b644-eaa0-4ace-9356-3f75bf8e9e41
Pender, Gareth
f392aa23-1374-498e-a0fc-b9d97d1638de
Liu, QingQuan
caf39a36-0ac8-42da-8305-765864e946ab
Carling, Paul A.
8d252dd9-3c88-4803-81cc-c2ec4c6fa687
Huang, Wei, Cao, Zhixian, Pender, Gareth, Liu, QingQuan and Carling, Paul A.
(2015)
Coupled flood and sediment transport modelling with adaptive
mesh refinement.
Science China Technological Sciences, 58 (8), .
(doi:10.1007/s11431-015-5880-6).
Abstract
Coupled flood and sediment transport modelling in large-scale domains has for long been hindered by the high computational cost. Adaptive mesh refinement is one of the viable ways to solving this problem without degrading the accuracy. This goal can be accomplished through mesh adaptation, e.g., mesh coarsening and refining based on the dynamic regime of the flow and sediment transport along with bed evolution. However, previous studies in this regard have been limited to cases either without involving sediment transport or featuring flow-sediment-bed decoupling and the assumption of sediment transport capacity,which are not generally justified. Here, a coupled hydrodynamic and non-capacity sediment transport model is developed on adaptive non-uniform rectangular mesh. The proposed model is validated against experimental tests and numerical results based on the fixed meshes. It is demonstrated that the proposed model can properly capture shock waves, resolve the wetting/drying transition and reproduce morphological evolution. Compared with models based on the fixed meshes, the proposed model features great advantage in computational efficiency and holds promise for wide applications
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More information
Accepted/In Press date: 10 May 2015
e-pub ahead of print date: 9 July 2015
Published date: August 2015
Keywords:
shallow water flow, sediment transport, adaptive mesh
Organisations:
Earth Surface Dynamics
Identifiers
Local EPrints ID: 380124
URI: http://eprints.soton.ac.uk/id/eprint/380124
ISSN: 1674-7321
PURE UUID: 08795401-3160-4a1d-8251-1e20bbf902e4
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Date deposited: 03 Sep 2015 13:39
Last modified: 14 Mar 2024 20:54
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Contributors
Author:
Wei Huang
Author:
Zhixian Cao
Author:
Gareth Pender
Author:
QingQuan Liu
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