English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/94128
COMPARTIR / IMPACTO:
Estadísticas
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:
Título

Velocity profile approximations for two-dimensional potential open channel flow

AutorCastro-Orgaz, Óscar ; Hager, Willi H.
Palabras claveBoussinesq model
Open channel flow
Potential flow
Hydraulics
Fecha de publicación2013
EditorTaylor & Francis
CitaciónJournal of Hydraulic Research 51(6): 645-655 (2013)
ResumenTwo-dimensional flow over channel transitions including round-crested weirs or slope changes is described by the potential flow equations. An approximation widely used in hydraulic engineering relates to the simplification of the 2D potential flow problem using a 1D approach, introducing a suitable hypothesis for the vertical variation of the velocity components, namely the Boussinesq approximation. The current knowledge cannot answer whether this approximation can be used for highly-curved flows. Furthermore, there is no information as to the order of accuracy in the Boussinesq approximation of the velocity functions. In this work, the potential velocity profiles originating from the Boussinesq approximation are tested for highly-curved flows using a new 2D solution. Furthermore, the second-and third-order accurate approximations for u are systematically assessed to study its accuracy behaviour. The implications of a linear vertical velocity profile are particularly addressed. A formulation in curvilinear coordinates leading to the widely used free-vortex-type velocity profile is compared with the 2D results and the Cartesian Boussinesq equations. © 2013 © 2013 International Association for Hydro-Environment Engineering and Research.
URIhttp://hdl.handle.net/10261/94128
DOI10.1080/00221686.2013.809387
E-ISSN1814-2079
Identificadoresdoi: 10.1080/00221686.2013.809387
issn: 0022-1686
Aparece en las colecciones: (IAS) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
accesoRestringido.pdf15,38 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.