Numerical assessment of bed-load discharge formulations for transient flow in 1D and 2D situations. Autores
Carmelo Juez, Javier (Universidad de Zaragoza) ; Murillo Pilar García-Navarro (Universidad de Zaragoza)
Resumen: Two-dimensional (2D) transient flow over an erodible bed can be modelled using shallow-water equations and the Exner equation to describe the morphological evolution of the bed. Considering the fact that well-proven capacity formulae are based on one-dimensional (1D) experimental steady
flows, the assessment of these empirical relations under unsteady 1D and 2D situations is important.
In order to ensure the reliability of the numerical experimentation, the formulation has to be general enough to allow the use of different empirical laws. Moreover, the numerical scheme must handle correctly the coupling between the 2D shallow-water equations and the Exner equation under any
condition. In this work, a finite-volume numerical scheme that includes these two main features will be exploited here in 1D and 2D laboratory test cases. The relative performances of Meyer-Peter and Müller, Ashida and Michiue, Engelund and Fredsoe, Fernandez Luque and Van Beek, Parker, Smart,
Nielsen, Wong and Camenen and Larson formulations are analysed in terms of the root mean square error. A new discretization of the Smart formula is provided, leading to promising predictions of the erosion/deposition rates. The results arising from this work are useful to justify the use of an
empirical sediment bed-load discharge formula among the ones studied, regardless of the hydrodynamic situation.
Idioma: Inglés
DOI: 10.2166/hydro.2013.153
Año: 2013
Publicado en: JOURNAL OF HYDROINFORMATICS 15, 4 (2013), 1234-1257
ISSN: 1464-7141
Factor impacto JCR: 1.336 (2013)
Categ. JCR: ENGINEERING, CIVIL rank: 38 / 124 = 0.306 (2013) - Q2 - T1
Categ. JCR: WATER RESOURCES rank: 35 / 81 = 0.432 (2013) - Q2 - T2
Categ. JCR: ENVIRONMENTAL SCIENCES rank: 124 / 215 = 0.577 (2013) - Q3 - T2
Categ. JCR: COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS rank: 57 / 101 = 0.564 (2013) - Q3 - T2
Tipo y forma: Article (Published version)
Área (Departamento): Área Mecánica de Fluidos (Dpto. Ciencia Tecnol.Mater.Fl.)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
Exportado de SIDERAL (2024-01-25-15:09:58)
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flows, the assessment of these empirical relations under unsteady 1D and 2D situations is important.
In order to ensure the reliability of the numerical experimentation, the formulation has to be general enough to allow the use of different empirical laws. Moreover, the numerical scheme must handle correctly the coupling between the 2D shallow-water equations and the Exner equation under any
condition. In this work, a finite-volume numerical scheme that includes these two main features will be exploited here in 1D and 2D laboratory test cases. The relative performances of Meyer-Peter and Müller, Ashida and Michiue, Engelund and Fredsoe, Fernandez Luque and Van Beek, Parker, Smart,
Nielsen, Wong and Camenen and Larson formulations are analysed in terms of the root mean square error. A new discretization of the Smart formula is provided, leading to promising predictions of the erosion/deposition rates. The results arising from this work are useful to justify the use of an
empirical sediment bed-load discharge formula among the ones studied, regardless of the hydrodynamic situation.
Idioma: Inglés
DOI: 10.2166/hydro.2013.153
Año: 2013
Publicado en: JOURNAL OF HYDROINFORMATICS 15, 4 (2013), 1234-1257
ISSN: 1464-7141
Factor impacto JCR: 1.336 (2013)
Categ. JCR: ENGINEERING, CIVIL rank: 38 / 124 = 0.306 (2013) - Q2 - T1
Categ. JCR: WATER RESOURCES rank: 35 / 81 = 0.432 (2013) - Q2 - T2
Categ. JCR: ENVIRONMENTAL SCIENCES rank: 124 / 215 = 0.577 (2013) - Q3 - T2
Categ. JCR: COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS rank: 57 / 101 = 0.564 (2013) - Q3 - T2
Tipo y forma: Article (Published version)
Área (Departamento): Área Mecánica de Fluidos (Dpto. Ciencia Tecnol.Mater.Fl.)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. Exportado de SIDERAL (2024-01-25-15:09:58)
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