Journal of hydraulic research, Vol. 49 N° 5. Journal of hydraulic research - Septembre/Octobre 2011
| Titre : | Journal of hydraulic research, Vol. 49 N° 5. Journal of hydraulic research - Septembre/Octobre 2011 |
| Type de document : | Bulletin |
| Paru le : | 17/11/2011 |
Dépouillements
Article : texte imprimé
Oscar Castro-Orgaz, Auteur ;
Willi H. Hager, Auteur
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Joseph Valentin Boussinesq (1842–1929) is known in open channel hydraulics for the outstanding theory bearing his name to deal with streamlined-flows. However, the original developments did not last over time and remain lost in his original writ[...]
Article : texte imprimé
Mario Di Fidio, Auteur ;
Claudio Gandolfi, Auteur
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A review of the main instruments developed in Italy over more than two centuries to measure flow velocity of experience is presented, highlighting the relation with the development of hydraulics as a physical–mathematical science from the sevent[...]
Article : texte imprimé
Wernher Brevis, Auteur ;
Manuel García-Villalba, Auteur
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The identification of the spatial characteristics and the shedding frequencies of coherent structures in shallow flows usually involves the use of sophisticated equipment for velocity measurements such as laser Doppler anemometry or particle ima[...]
Article : texte imprimé
Islam Mohammed Rashedul, Auteur ;
David Z. Zhu, Auteur
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A numerical study was conducted to investigate the effect of confinement on wall jets in a rectangular water basin using a slot inlet. The inlet slot creates a wall jet on the bottom of the basin with a recirculation zone on top of it. The class[...]
Article : texte imprimé
Joaquin Ortega-Casanova, Auteur ;
Nicolas Campos, Auteur ;
Ramon Fernandez-Feria, Auteur
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The excavation performance of swirling jets impinging normally against a sand bed from several distances is described. A specially-designed nozzle with adjustable swirl vanes was used to generate swirling jets of various swirl intensities. Two s[...]
Article : texte imprimé
Nicolas Huybrechts, Auteur ;
Giang Vu Luong, Auteur ;
Yuanfeng Zhang, Auteur
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Field data are here re-interpreted using the Vortex–Drag equation for evaluating the alluvial resistance in a sand bed river. The Vortex–Drag equation introduces the Rossiter resonance concept into alluvial hydraulics. It appears that this equat[...]
Article : texte imprimé
Po-Hung Yeh, Auteur ;
Namgyu Park, Auteur ;
Chang, Kuang-An, Auteur
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Channel centreline migration rates were derived from a set of large-scale laboratory experiments. The channel radius of curvature, bend angle, and discharge were varied to evaluate correlations between the channel centreline migration rate and t[...]
Article : texte imprimé
Dubravka Pokrajac, Auteur ;
Gustaaf Adriaan Kikkert, Auteur
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Depth-averaged equations describing turbulent free-surface flows are usually derived assuming that the free surface is constant over a statistical ensemble of realizations. This work presents the derivation of the Reynolds-Averaged-Depth-Integra[...]
Article : texte imprimé
In hydraulic engineering, stepped spillways are effective structures in regard to both energy dissipation and re-aeration processes. It is well known that flow depths and flow velocities generally depend on the spillway geometry in terms of slop[...]
Article : texte imprimé
Aidin Jabbari Sahebari, Auteur ;
Jin, Yee-Chung, Auteur ;
Ahmad Shakibaeinia, Auteur
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A particular flow structure and the behaviour of free surface complicate flow modelling over sills, especially if the free surface is highly deformed and made up of spray. Mesh-free particle methods have recently been developed to increase the f[...]
Article : texte imprimé
Ke Yam, Auteur ;
William D. McCaffrey, Auteur ;
Derek B. Ingham, Auteur
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A Computational Fluid Dynamics (CFD) investigation was conducted to evaluate the accuracy and validity of the algebraic slip model in predicting the evolution of turbidity currents. The scenario used to run the model simulation was an experiment[...]
Article : texte imprimé
Oscar Castro-Orgaz, Auteur ;
Willi H. Hager, Auteur
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Spatially-varied open channel flows with a streamwise discharge variation occur in the side-weir, side-channel and bottom outlet. The governing equations were formulated in the 1970s by Yen and Wenzel. However, no attempts were made to provide c[...]
Article : texte imprimé
Shawn P. Clark, Auteur ;
Nicholas Kehler, Auteur
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Anthropogenic barriers to fish passage at stream crossings are an important issue in North America. Environmental regulations impose velocity restrictions on culvert flow, which may be overly simplistic. A series of laboratory experiments were c[...]
Article : texte imprimé
Mahnaz Ghaeini-Hessaroeyeh, Auteur ;
Ahmad Tahershamsi, Auteur ;
Masoud Montazeri Namin, Auteur
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A two-dimensional numerical model predicting supercritical flow in open channels has been developed using the finite volume method. The shallow-water equations are solved by the total variation diminishing weighted average flux method. Then the [...]
Article : texte imprimé
Oscar Castro-Orgaz, Auteur ;
Willi H. Hager, Auteur
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Near-critical flows in rivers and natural streams usually present a wavelike undular free surface, associated with dune-type bed-forms. The formation of this particular bed geometry is related to the shear stress acting on the river bed. The bou[...]
Article : texte imprimé
Yuanya Li, Auteur ;
Junhua Zhang, Auteur ;
Huaibao Ma, Auteur
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This research presents a theoretical Froude number model at the incipient plunging point for a gravity current advancing into a sloping ambient reservoir. The analysis is based on the balance of potential energy, kinetic energy and energy losses[...]
Article : texte imprimé
Robert J. Bialik, Auteur
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A theoretical model of non-uniform saltating grains in a turbulent open-channel flow based on the Lagrangian approach is developed. In the analysis described herein, a more realistic stochastic model of particle-bed collision is proposed. Based [...]
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