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Indexed by:期刊论文

Date of Publication:2013-01-01

Journal:PROGRESS IN COMPUTATIONAL FLUID DYNAMICS

Included Journals:SCIE、EI、Scopus

Volume:13

Issue:1

Page Number:1-10

ISSN No.:1468-4349

Key Words:AMR; adaptive mesh refinement; flood modelling; SWEs; shallow water equations; Godunov-type scheme; dam break; numerical accuracy

Abstract:Aiming to provide accurate and efficient solutions to complex flood waves induced by dam breaks and flash floods, this work introduces a structured adaptive grid based model that solves the 2D shallow water equations using a first-order finite volume Godunov-type scheme. The computational grids dynamically evolves according to the local topographic features, moving wet-dry interfaces and other flow features involving sharp surface gradients. The model is validated against two dam-break benchmark tests with experimental data. The effect of the order of numerical accuracy on the numerical results is also assessed and discussed.