Guan, M, Wright, NG and Sleigh, PA (2015) Multimode morphodynamic model for sediment-laden flows and geomorphic impacts. Journal of Hydraulic Engineering. 04015006. ISSN 1943-7900
Abstract
Sediment-laden flows are a complex solid-fluid interaction process. This study presents a multimode morphodynamic model system combined with shallow water theory and a nonequilibrium assumption for sediment transport. The model system aims to simulate the morphological change caused by sediment-laden flows with various sediment transport modes. It involves three modules: a hydrodynamic module, a sediment transport module, and a morphological evolution module. The hydrodynamic model is governed by modified shallow water equations considering the interaction effects of flow and sediment. A flexible sediment transport model is presented that incorporates a weight coefficient. The model can adaptively choose an appropriate transport mode according to local, real-time flow conditions. Bedload, suspended load, and total mixed sediment load are all involved. The model is solved by a second-order Godunov-type finite-volume method that is robust and accurate. Validation is demonstrated through a series of test cases. The results indicate that the model can attain good agreement with measured data, thereby demonstrating the capabilities of the multimode morphodynamic model system in predicting sediment-laden flows and resulting morphological change.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2015 American Society of Civil Engineers. This is an author produced version of a paper published in Journal of Hydraulic Engineering. Uploaded in accordance with the publisher's self-archiving policy |
Keywords: | Multimode; morphodynamic model; bedload; suspended load; geomorphic impacts |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Civil Engineering (Leeds) > Inst for Pathogen Control Engineering (Leeds) The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Civil Engineering (Leeds) > Institute for Resilient Infrastructure (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 03 Feb 2015 11:13 |
Last Modified: | 15 Jan 2018 21:18 |
Published Version: | http://dx.doi.org/10.1061/(ASCE)HY.1943-7900.00009... |
Status: | Published |
Publisher: | American Society of Civil Engineers |
Identification Number: | 10.1061/(ASCE)HY.1943-7900.0000997 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:82503 |