Guan, M, Wright, NG and Sleigh, PA (2012) Applicability of entrainment formulas to modelling of geomorphic outburst flows. In: Hinkelmann, R, Nasermoaddeli, MH, Liong, SY, Savic, D, Fröhle, P and Daemrich, KF, (eds.) Proceedings of the 10th International Conference on Hydroinformatics (2012). Proceedings of the 10th International Conference on Hydroinformatics, 12-18 Jul 2012, Hamburg, Germany.
Abstract
This paper presents a non-capacity coupled model of dam-break induced geomorphic flows which couples hydrodynamic model, morphodynamic model and bed evolution. An upwind Godunov-type scheme with a modified Roe’s Riemann Solver is implemented to solve the hyperbolic system. As the key closure equation for non-equilibrium sediment transport model, a wide range of previous empirical, semi-empirical or theoretical entrainment functions are summarized and their performance is investigated by application to three dam-break flow cases with a range of different Shields’ parameters. The sensitivity of the parameters in the entrainment formulas is also evaluated. Many of the existing entrainment formulas have rarely been verified thoroughly due to difficulty of validation in the situation of high-magnitude outburst flows. For non-capacity models of dam-break transient flows, an appropriate and applicable entrainment relationship should be selected and applied thoroughly according to different hydraulic conditions.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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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) > Institute for Resilient Infrastructure (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 27 Nov 2013 10:31 |
Last Modified: | 19 Dec 2022 13:25 |
Published Version: | http://www.researchgate.net/publication/259184970_... |
Status: | Published |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:76791 |