A first-order adaptive solution to rapidly spreading flood waves. (1st January 2013)

• Record Type: Journal Article
• Authors: Zhang, Chi; Liang, Qiuhua; Yin, Junxian
• Is Part Of: Progress in computational fluid dynamics. Volume 13:Number 1(2013)
• Page Start: 1
• Page End: 10
• Publication Date: 2013-01-01
• Subjects: AMR -- adaptive mesh refinement -- flood modelling -- SWEs -- shallow water equations -- Godunov-type scheme -- dam break -- numerical accuracy; Fluid dynamics -- Data processing -- Periodicals; Fluid dynamics -- Mathematics -- Periodicals; 620.10640285
• Languages: English
• ISSNs: 1468-4349

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.