Analytical Froude number solution for reservoir density inflows / Yuanya Li in Journal of hydraulic research, Vol. 49 N° 5 (Septembre/Octobre 2011)  

Public ISBD [article]  inJournal of hydraulic research > Vol. 49 N° 5 (Septembre/Octobre 2011) . - pp. 693-696 Titre : Analytical Froude number solution for reservoir density inflows Type de document : texte imprimé Auteurs : Yuanya Li, Auteur ; Junhua Zhang, Auteur ; Huaibao Ma, Auteur Année de publication : 2011 Article en page(s) : pp. 693-696 Note générale : Hydraulique Langues : Anglais (eng) Mots-clés : Energy balance Froude number Gravity current Reservoir sedimentation Turbidity Index. décimale : 627 Ingénierie des cours d'eau naturels, des ports, des rades et des cotes. Installations de navigation, de dragage, de récupération et de sauvetage. Barrages et centrales électriques hydrauliques Résumé : This research presents a theoretical Froude number model at the incipient plunging point for a gravity current advancing into a sloping ambient reservoir. The analysis is based on the balance of potential energy, kinetic energy and energy losses. The Froude number at the incipient plunging point attracted attention in recent years. There are two opinions: either the Froude number is considered a constant, whereas others find it as variable in a wide range, depending on the bottom slope and the sediment concentration. The theoretical solution presented herein resolves the problem by stating that the Froude number is the function of bottom slope, relative thickness of the density current and the friction coefficient. Moreover, this theoretical analysis unifies all previous researches culminating in a general solution of the problem. DEWEY : 627 ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/abs/10.1080/00221686.2011.593905 [article] Analytical Froude number solution for reservoir density inflows [texte imprimé] / Yuanya Li, Auteur ; Junhua Zhang, Auteur ; Huaibao Ma, Auteur . - 2011 . - pp. 693-696. Hydraulique Langues : Anglais (eng) in Journal of hydraulic research > Vol. 49 N° 5 (Septembre/Octobre 2011) . - pp. 693-696 Mots-clés : Energy balance Froude number Gravity current Reservoir sedimentation Turbidity Index. décimale : 627 Ingénierie des cours d'eau naturels, des ports, des rades et des cotes. Installations de navigation, de dragage, de récupération et de sauvetage. Barrages et centrales électriques hydrauliques Résumé : This research presents a theoretical Froude number model at the incipient plunging point for a gravity current advancing into a sloping ambient reservoir. The analysis is based on the balance of potential energy, kinetic energy and energy losses. The Froude number at the incipient plunging point attracted attention in recent years. There are two opinions: either the Froude number is considered a constant, whereas others find it as variable in a wide range, depending on the bottom slope and the sediment concentration. The theoretical solution presented herein resolves the problem by stating that the Froude number is the function of bottom slope, relative thickness of the density current and the friction coefficient. Moreover, this theoretical analysis unifies all previous researches culminating in a general solution of the problem. DEWEY : 627 ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/abs/10.1080/00221686.2011.593905

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