Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2013-01-01

Journal: PROGRESS IN COMPUTATIONAL FLUID DYNAMICS

Included Journals: Scopus、EI、SCIE

Volume: 13

Issue: 1

Page Number: 1-10

ISSN: 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.