Division of critical flow at three-branch open-channel intersection
| Autor: | Kamal El Kadi Abderrezzak, Leszek Lewicki, Gilbert Travin, André Paquier, Nicolas Riviere |
|---|---|
| Přispěvatelé: | Laboratoire d'Hydraulique Saint-Venant / Saint-Venant Laboratory for Hydraulics (Saint-Venant), École des Ponts ParisTech (ENPC)-PRES Université Paris-Est-EDF (EDF)-Avant création Cerema, Laboratoire National d’Hydraulique et Environnement (EDF R&D LNHE), EDF R&D (EDF R&D), EDF (EDF)-EDF (EDF), Cracow University of Technology, Hydrologie-Hydraulique (UR HHLY), Centre national du machinisme agricole, du génie rural, des eaux et forêts (CEMAGREF), Laboratoire de Mecanique des Fluides et d'Acoustique (LMFA), École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2011 |
| Předmět: |
010504 meteorology & atmospheric sciences
Hydraulics open channel junction 0207 environmental engineering [PHYS.MECA.GEME]Physics [physics]/Mechanics [physics]/Mechanical engineering [physics.class-ph] 02 engineering and technology Inflow 01 natural sciences Tailwater law.invention Pipe network analysis symbols.namesake transcritical flow law 11. Sustainability Froude number Geotechnical engineering 020701 environmental engineering Hydraulic jump 0105 earth and related environmental sciences Water Science and Technology Civil and Structural Engineering dividing flow Mechanics laboratory experiment Channel intersection 6. Clean water Open-channel flow symbols Outflow depth-averaged model Geology |
| Zdroj: | Journal of Hydraulic Research Journal of Hydraulic Research, Taylor & Francis, 2011, 49 (2), pp.231-238. ⟨10.1080/00221686.2011.558174⟩ |
| ISSN: | 1814-2079 0022-1686 |
| DOI: | 10.1080/00221686.2011.558174 |
| Popis: | International audience; An experimental study of the characteristics of dividing critical flows in a 90° open-channel junction formed by three horizontal equal-width branches is presented, conducted for various inflow discharges and downstream boundary conditions. Outflow discharges and flow depths were also measured. Four main flow patterns are identified considering the location and length of the hydraulic jumps that develop across the main and lateral channels. A relationship between the discharge division ratio and the tailwater Froude number is found, reproducing well the experimental data. Practical applications of this relationship include the design of open channel and pipe networks and one-dimensional numerical modelling of flood propagation in urban areas. The study shows also that a two-dimensional depth-averaged numerical model hardly gives better predictions of the discharge ratios because of the presence of three-dimensional features at the junction. |
| Databáze: | OpenAIRE |
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