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Physical modeling of a stepped spillway without sidewalls

Estrella Toral, Soledad / Sánchez Juny, Martí / Bladé i Castellet, Ernest / Dolz Ripollès, Josep

The interest of a consulting company in designing stepped spillways in roller compacted concrete (RCC) dams led us to propose the possibility of building this type of spillway without sidewalls. Previous research on stepped spillways has focused on characterizing the complex hydraulic behavior of flow on these structures, as well as design criteria. Such studies have usually been conducted on stepped spillways with a constant width along the spillway, that is, with sidewalls. In the present work, we report the results of the physical modeling of a generic stepped spillway without sidewalls (slope 1v:0.8h). In general terms, the lack of sidewalls produces a lateral expansion of water and therefore a non-uniform longitudinal and transversal discharge distribution. Consequently, the flow type, characteristic water depth, velocity, air concentration, and pressure fields change along and across the spillway. The resulting data demonstrate that the distribution of the different variables studied depend on the specific discharge at the entrance and the spillway height ; Peer Reviewed ; Postprint (author's final draft)

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Physical modeling of a stepped spillway without sidewalls

Estrella Toral, Soledad / Sánchez Juny, Martí / Bladé i Castellet, Ernest / Dolz Ripollès, Josep

The interest of a consulting company in designing stepped spillways in roller compacted concrete (RCC) dams led us to propose the possibility of building this type of spillway without sidewalls. Previous research on stepped spillways has focused on characterizing the complex hydraulic behavior of flow on these structures, as well as design criteria. Such studies have usually been conducted on stepped spillways with a constant width along the spillway, that is, with sidewalls. In the present work, we report the results of the physical modeling of a generic stepped spillway without sidewalls (slope 1v:0.8h). In general terms, the lack of sidewalls produces a lateral expansion of water and therefore a non-uniform longitudinal and transversal discharge distribution. Consequently, the flow type, characteristic water depth, velocity, air concentration, and pressure fields change along and across the spillway. The resulting data demonstrate that the distribution of the different variables studied depend on the specific discharge at the entrance and the spillway height ; Peer Reviewed ; Postprint (author's final draft)

Physical modeling of a stepped spillway without sidewalls

Estrella Toral, Soledad / Sánchez Juny, Martí / Bladé i Castellet, Ernest / Dolz Ripollès, Josep

The interest of a consulting company in designing stepped spillways in roller compacted concrete (RCC) dams led us to propose the possibility of building this type of spillway without sidewalls. Previous research on stepped spillways has focused on characterizing the complex hydraulic behavior of flow on these structures, as well as design criteria. Such studies have usually been conducted on stepped spillways with a constant width along the spillway, that is, with sidewalls. In the present work, we report the results of the physical modeling of a generic stepped spillway without sidewalls (slope 1v:0.8h). In general terms, the lack of sidewalls produces a lateral expansion of water and therefore a non-uniform longitudinal and transversal discharge distribution. Consequently, the flow type, characteristic water depth, velocity, air concentration, and pressure fields change along and across the spillway. The resulting data demonstrate that the distribution of the different variables studied depend on the specific discharge at the entrance and the spillway height ; Peer Reviewed ; Postprint (author's final draft)

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Titel:

Physical modeling of a stepped spillway without sidewalls

Beteiligte:

Estrella Toral, Soledad (Autor:in) / Sánchez Juny, Martí (Autor:in) / Bladé i Castellet, Ernest (Autor:in) / Dolz Ripollès, Josep (Autor:in) / Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental / Universitat Politècnica de Catalunya. Institut en Dinàmica Fluvial i Enginyeria Hidrològica / Centre Internacional de Mètodes Numèrics en Enginyeria / Universitat Politècnica de Catalunya. FLUMEN - Dinàmica Fluvial i Enginyeria Hidrològica / Universitat Politècnica de Catalunya. Geo2Aqua - Monitoring, modelling and geomatics for hydro-geomorphological processes

Erscheinungsdatum:

01.05.2015

DOI:

https://doi.org/10.1139/cjce-2014-0427

Medientyp:

Aufsatz (Zeitschrift)

Format:

Elektronische Ressource

Sprache:

Englisch

Schlagwörter:

Àrees temàtiques de la UPC::Enginyeria civil::Enginyeria hidràulica , marítima i sanitària::Embassaments i preses , Spillways , Air concentration , Physical modeling , Pressure field , Stepped spillways , Velocity profiles , Preses (Enginyeria) -- Mesures de seguretat

Klassifikation:

DDC: 500

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