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

Autor:	Yueling Wang, Jim W. Hall, Qiuhua Liang, Georges Kesserwani
Rok vydání:	2011
Předmět:	Finite volume method Discretization Mechanics Stability (probability) Term (time) Flow (mathematics) Benchmark (computing) Calculus Hydraulic jump Shallow water equations Physics::Atmospheric and Oceanic Physics Geology Water Science and Technology Civil and Structural Engineering
Zdroj:	Journal of Hydraulic Research. 49:307-316
ISSN:	1814-2079 0022-1686
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::72b1206cbb5f56c3e4ea3b4058e32f9f https://doi.org/10.1080/00221686.2011.566248 Zobrazit plný text záznamu