Lauber and Hager’s dam-break wave data for numerical model validation / Lai Wai Tan in Journal of hydraulic research, Vol. 47 N° 4 (2009)  

Public ISBD [article]  inJournal of hydraulic research > Vol. 47 N° 4 (2009) . - pp. 524-528 Titre : Lauber and Hager’s dam-break wave data for numerical model validation Titre original : Données de rupture de barrage de Lauber et Hager pour valider les modèles numériques Type de document : texte imprimé Auteurs : Lai Wai Tan, Auteur ; Vincent H. Chu, Auteur Article en page(s) : pp. 524-528 Note générale : Hydraulique Résumé en Français Langues : Anglais (eng) Mots-clés : Dam-break wave Finite reservoir Free surface flow Hydrostatic pressure Lagrangin blocks on eulerian mesh Saint-Venant equations 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 : Lauber and Hager (1998) have provided a complete set of laboratory data, with both velocity and depth profiles for dam-break flood wave released from a reservoir of finite dimension. At the advancing wave front, the water depth reduces to zero and the velocity peaks. Friction is the dominant effect at the wave front. There is a linear decrease of the velocity from the peak at the wave front toward the back of the dam-break wave. The availability of this data set has provided the opportunity to validate numerical models. The dam-break flood wave is simulated herein using the One-Dimensional Saint-Venant (1DSV) model. A Lagrangian Blocks on Eulerian Mesh (LBEM) method is employed to carry out these calculations. The blocks as the computational elements in the LBEM method produce non-negative depths. Accurate 1DSV model simulation by the LBEM method is possible without the need of a frontal condition for the wet-and-dry interface across the wave front. DEWEY : 627 ISSN : 0022-1686 En ligne : http://www.journalhydraulicresearch.com [article] Lauber and Hager’s dam-break wave data for numerical model validation = Données de rupture de barrage de Lauber et Hager pour valider les modèles numériques [texte imprimé] / Lai Wai Tan, Auteur ; Vincent H. Chu, Auteur . - pp. 524-528. Hydraulique Résumé en Français Langues : Anglais (eng) in Journal of hydraulic research > Vol. 47 N° 4 (2009) . - pp. 524-528 Mots-clés : Dam-break wave Finite reservoir Free surface flow Hydrostatic pressure Lagrangin blocks on eulerian mesh Saint-Venant equations 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 : Lauber and Hager (1998) have provided a complete set of laboratory data, with both velocity and depth profiles for dam-break flood wave released from a reservoir of finite dimension. At the advancing wave front, the water depth reduces to zero and the velocity peaks. Friction is the dominant effect at the wave front. There is a linear decrease of the velocity from the peak at the wave front toward the back of the dam-break wave. The availability of this data set has provided the opportunity to validate numerical models. The dam-break flood wave is simulated herein using the One-Dimensional Saint-Venant (1DSV) model. A Lagrangian Blocks on Eulerian Mesh (LBEM) method is employed to carry out these calculations. The blocks as the computational elements in the LBEM method produce non-negative depths. Accurate 1DSV model simulation by the LBEM method is possible without the need of a frontal condition for the wet-and-dry interface across the wave front. DEWEY : 627 ISSN : 0022-1686 En ligne : http://www.journalhydraulicresearch.com

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