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Analysis of the Friction Term in the One-Dimensional Shallow-Water Model

AutorBurguete Tolosa, Javier ; García-Navarro, Pilar
Palabras claveShallow water
Open channel flow
Flow resistance
Numerical models
Fecha de publicaciónsep-2007
EditorAmerican Society of Civil Engineers
CitaciónJournal of Hydraulic Engineering 133 (9): 1048-1063 (September 2007)
ResumenThe numerical simulation of unsteady open channel flows is very commonly performed using the one-dimensional shallow-water model. Friction is one of the relevant forces included in the momentum equation. In this work, a generalization of the Gauckler-Manning friction model is proposed to improve the modeling approach in cases of dominant roughness, unsteady flow, and distorted cross-sectional shapes. The numerical stability conditions are revisited in cases of dominant friction terms and a new condition, complementary to the basic Courant-Friedrichs-Lewy condition, is proposed. Some test cases with measured data are used to validate the quality of the approaches.
Descripción52 Pag., 22 Fig. The definitive version is available at: http://cedb.asce.org/
Versión del editorhttp://dx.doi.org/10.1061/(ASCE)0733-9429(2007)133:9(1048)
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