Journal of hydraulic research, Vol. 46 N°1. Journal of hydraulic research - 2008
| Titre : | Journal of hydraulic research, Vol. 46 N°1. Journal of hydraulic research - 2008 |
| Type de document : | Bulletin |
| Paru le : | 09/04/2008 |
Dépouillements
Article : texte imprimé
Toombes, L., Auteur ;
Chanson, H., Auteur
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Although modern gravity dam spillways include often steep chutes operating in skimming flow regime, succession of free-falling nappes (i.e. nappe flow regime) are more common on low gradient chutes and cascades, and this flow situation received [...]
Article : texte imprimé
Adane, K. K., Auteur ;
Ormiston, S. J., Auteur ;
M. F. Tachie, Auteur
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A numerical investigation of turbulent flow in a draft tube with and without an opening (slot) in the top of each of its three outlet channels is presented. A commercial CFD code, CFX-5, is used to solve the Reynolds-averaged Navier-Stokes equat[...]
Article : texte imprimé
Improved implementation of the HLL approximate Riemann solver for one-dimensional open channel flows
Ying, Xinya, Auteur ;
Wang, Sam S. Y., Auteur
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Several new techniques are proposed to overcome the deficiencies in the conventional formulation of the approximate Riemann solvers for onedimensional open channel flows, which include numerical imbalance and inaccuracy in the solution of discha[...]
Article : texte imprimé
Chanson, Hubert, Auteur ;
Gualtieri, Carlo, Auteur
|
A hydraulic jump is characterized by some strong turbulence and air entrainment in the roller. New measurements were performed in two channels in which similar experiments with identical inflow Froude numbers and relative channel widths were con[...]
Article : texte imprimé
Soares-Frazão, Sandra, Auteur ;
Lhomme, Julien, Auteur ;
Guinot, Vincent, Auteur
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Floodplains with urban areas have significant effects on inundation flows. Large-scale modelling of such zones thus requires a special treatment to involve those effects. This paper presents a shallow-water model with porosity to account for the[...]
Article : texte imprimé
Gonzalez, C. A., Auteur ;
Chanson, Hubert, Auteur
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Current expertise in air-water turbulent flows on stepped chutes is limited mostly to laboratory experiments at low to moderate Reynolds numbers on chutes with flat horizontal steps. In this study, highly turbulent air-water flows skimming down [...]
Article : texte imprimé
Di Cristo, C., Auteur ;
Iervolino, M., Auteur ;
Vacca, A., Auteur
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The initial phase of roll-wave development is investigated by means of spatial linear stability analysis using the St. Venant equations, subject to a pointwise time-varying oscillating disturbance. The predicted spatial growth is compared with b[...]
Article : texte imprimé
Ortega-Sanchez, Miguel, Auteur ;
Losada, Miguel A., Auteur ;
Baquerizo, Asuncion, Auteur
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This paper presents a global model describing the jet plane flow due to a tidal or river discharge. This model characterizes the geometry and the velocity field of the ebb-tidal jet in the whole domain including the effects of friction and botto[...]
Article : texte imprimé
Wu, Weiming, Auteur ;
Wang, Sam S. Y., Auteur
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A 1D finite-volume model has been established to simulate the nonequilibrium transport of nonuniform sediment with transient flows, such as dam-break flow and overtopping flow, over movable beds. The effects of sediment transport and bed change [...]
Article : texte imprimé
Shiono, K., Auteur ;
Spooner, J., Auteur ;
Chan, T., Auteur
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Experiments were conducted in meandering channels with non-mobile and mobile beds to measure flow rates, velocities, turbulent kinetic energies, bedforms and sediment transport rates for overbank flows. The behaviour of bedform in meandering cha[...]
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