ePrints

A 2D shallow flow model for practical dam-break simulations

Lookup NU author(s): Yueling Wang, Professor Qiuhua Liang, Dr Georges Kesserwani, Professor Jim Hall

Downloads

Full text for this publication is not currently held within this repository. Alternative links are provided below where available.

Abstract

Dam-break flows usually occur in domains with complex geometric and topographic features and involve abrupt flow patterns. A dam-break model must therefore be able to effectively handle different flow types including transcritical flows or hydraulic jumps, deal with complex domain topography, capture repeating wet-dry interface and represent high roughness values in the floodplain. Herein, all of these objectives are achieved by extending a recent one-dimensional finite volume Godunov-type model into two dimensions for solving the shallow-water equations. While doing so, a much simplified condition to maintain well-balanced solutions around a wet-dry front is proposed and a two-dimensional friction source term discretization is derived under a suitable stability condition in relation to practical simulations. The two-dimensional model is successfully validated against three analytical benchmark tests and then assessed for predicting realistic dam-break flood events.

Publication metadata

Author(s): Wang YL, Liang QH, Kesserwani G, Hall JW

Publication type: Article

Publication status: Published

Journal: Journal of Hydraulic Research

Year: 2011

Volume: 49

Issue: 3

Pages: 307-316

Print publication date: 17/06/2011

ISSN (print): 0022-1686

ISSN (electronic): 1814-2079

Publisher: Taylor & Francis Ltd.

URL: http://dx.doi.org/10.1080/00221686.2011.566248

DOI: 10.1080/00221686.2011.566248

Altmetrics

Funding

Share