[article] 
inJournal of hydraulic research > Vol. 49 N° 5 (Septembre/Octobre 2011) . - pp. 667-675

Titre :	Spatially-varied open channel flow equations with vertical inertia
Type de document :	texte imprimé
Auteurs :	Oscar Castro-Orgaz, Auteur ; Willi H. Hager, Auteur
Année de publication :	2011
Article en page(s) :	pp. 667-675
Note générale :	Hydraulique
Langues :	Anglais (eng)
Mots-clés :	Bottom outlet 0pen channel Side-weir Spatially-varied flow Two-dimensional
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 :	Spatially-varied open channel flows with a streamwise discharge variation occur in the side-weir, side-channel and bottom outlet. The governing equations were formulated in the 1970s by Yen and Wenzel. However, no attempts were made to provide closure to the energy and momentum systems in terms of velocity and pressure conditions. Therefore, the current theoretical knowledge relates to the hydraulic approach based on uniform velocity and hydrostatic pressure distributions, which is known for deviations from real conditions in spatially-varied flow problems. Herein, Boussinesq's theory is applied including vertical inertia to spatially-varied flows, resulting in a higher-order closed-form system of equations for energy and momentum generalizing the theoretical development of Yen and Wenzel. The novel Boussinesq system contains terms accounting for spatially-varied discharge. This development is applied to the practical case of bottom outlet flow, resulting in good agreement with experimental results.
DEWEY :	627
ISSN :	0022-1686
En ligne :	http://www.tandfonline.com/doi/abs/10.1080/00221686.2011.588774

[article] Spatially-varied open channel flow equations with vertical inertia [texte imprimé] / Oscar Castro-Orgaz, Auteur ; Willi H. Hager, Auteur . - 2011 . - pp. 667-675.
Hydraulique
Langues : Anglais (eng)
in Journal of hydraulic research > Vol. 49 N° 5 (Septembre/Octobre 2011) . - pp. 667-675

Mots-clés :	Bottom outlet 0pen channel Side-weir Spatially-varied flow Two-dimensional
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 :	Spatially-varied open channel flows with a streamwise discharge variation occur in the side-weir, side-channel and bottom outlet. The governing equations were formulated in the 1970s by Yen and Wenzel. However, no attempts were made to provide closure to the energy and momentum systems in terms of velocity and pressure conditions. Therefore, the current theoretical knowledge relates to the hydraulic approach based on uniform velocity and hydrostatic pressure distributions, which is known for deviations from real conditions in spatially-varied flow problems. Herein, Boussinesq's theory is applied including vertical inertia to spatially-varied flows, resulting in a higher-order closed-form system of equations for energy and momentum generalizing the theoretical development of Yen and Wenzel. The novel Boussinesq system contains terms accounting for spatially-varied discharge. This development is applied to the practical case of bottom outlet flow, resulting in good agreement with experimental results.
DEWEY :	627
ISSN :	0022-1686
En ligne :	http://www.tandfonline.com/doi/abs/10.1080/00221686.2011.588774