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Vortex scouring process around bridge pier with a caisson / Gangarudraiah Veerappadevaru in Journal of hydraulic research, Vol. 49 N° 3 (Mai/Juin 2011) 

Public ISBD [article]  in Journal of hydraulic research > Vol. 49 N° 3 (Mai/Juin 2011) . - pp. 378-383 Titre : Vortex scouring process around bridge pier with a caisson Type de document : texte imprimé Auteurs : Gangarudraiah Veerappadevaru, Auteur ; Thimmaiah Gangadharaiah, Auteur ; Thirumalai Ramaswamyiyenger, Auteur Année de publication : 2011 Article en page(s) : pp. 378-383 Note générale : Hydraulique Langues : Anglais (eng) Mots-clés : Caisson  bridge  pier  Power  concept  Scour  Vortex 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 : An experimental investigation to predict the characteristics of scour vortices related to the scour depth of caisson piers was conducted. Two median size sediments were used as bed materials. Three types of piers, namely a cylindrical pier, a cylindrical pier with a caisson, and a nose pier were considered. The size and the rotational speed of the primary vortex were measured and correlated to the flow and pier parameters. The vortex power available to scour the sediment is related to the power provided by the vortex in the scour process. The equilibrium scour depth was predicted based on the concept of power available in the primary scour vortex equal to the resisting power of sediment in the scour hole. The prediction of the scour depth agrees well with literature data. DEWEY : 627 ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/abs/10.1080/00221686.2011.568195 [article] Vortex scouring process around bridge pier with a caisson [texte imprimé] / Gangarudraiah Veerappadevaru, Auteur ; Thimmaiah Gangadharaiah, Auteur ; Thirumalai Ramaswamyiyenger, Auteur . - 2011 . - pp. 378-383. Hydraulique Langues : Anglais (eng) in Journal of hydraulic research > Vol. 49 N° 3 (Mai/Juin 2011) . - pp. 378-383 Mots-clés : Caisson  bridge  pier  Power  concept  Scour  Vortex 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 : An experimental investigation to predict the characteristics of scour vortices related to the scour depth of caisson piers was conducted. Two median size sediments were used as bed materials. Three types of piers, namely a cylindrical pier, a cylindrical pier with a caisson, and a nose pier were considered. The size and the rotational speed of the primary vortex were measured and correlated to the flow and pier parameters. The vortex power available to scour the sediment is related to the power provided by the vortex in the scour process. The equilibrium scour depth was predicted based on the concept of power available in the primary scour vortex equal to the resisting power of sediment in the scour hole. The prediction of the scour depth agrees well with literature data. DEWEY : 627 ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/abs/10.1080/00221686.2011.568195