Lookup NU author(s): Sam Mahaffey,
Dr Mohamed Rouainia,
Dr Gang Wang
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The effect of floating objects has so far rarely been considered in flood modelling and risk assessment, despite having significant implications for structural design in flood-prone and coastal areas. In this work, a novel two-way method is proposed to fully couple a discrete element model to a hydrodynamic model to simulate complex debris-enriched flow hydrodynamics. The adopted hydrodynamic model solves the nonlinear shallow water equations (SWEs) using a finite volume shock-capturing numerical method. After being validated against an idealized analytical test, the new coupled model is used to reproduce flume experiments of floating debris driven by dam-break waves. The numerical results agree well with the experimental measurements, demonstrating the model’s capability in simulating the complex fluid–debris interactions induced by violent shallow flows.
Author(s): Xiong Y, Mahaffey S, Liang Q, Rouainia M, Wang G
Publication type: Article
Publication status: Published
Journal: Journal of Hydraulic Research
Pages: Epub ahead of print
Online publication date: 05/12/2019
Acceptance date: 16/09/2019
ISSN (print): 0022-1686
ISSN (electronic): 1814-2079
Publisher: Taylor & Francis
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