Journal of hydraulic research, Vol. 47 N° 5. journal of hydraulic research - 2009
| Titre : | Journal of hydraulic research, Vol. 47 N° 5. journal of hydraulic research - 2009 |
| Type de document : | Bulletin |
| Paru le : | 10/01/2010 |
Dépouillements
Article : texte imprimé
Vasconcelos, Jose G., Auteur ;
Wright, Steven J., Auteur
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Below-grade stormwater storage tunnels are designed to provide relief for collection networks during intense rain events. Air must be evacuated as the tunnel fills and, depending on the system geometry, the air may become pressurized. This resea[...]
Article : texte imprimé
Patryk Wojtowicz, Auteur ;
Andrzej Kotowski, Auteur
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Selected hydraulic test results of cylindrical and conical vortex valves in a pilot-plant scale are presented to discuss the effects of the geometric parameters and the spatial orientation of a vortex chamber. Tests performed include the effects[...]
Article : texte imprimé
Mahnaz Ghaeini Hessaroeyeh, Auteur ;
Ahmad Tahershamsi, Auteur
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An analytical model to predict supercritical bend flow in a rectangular chute is developed. The governing differential equations consisting of the two-dimensional depth-averaged Euler and continuity equations, are linearized by the method of per[...]
Article : texte imprimé
Oscar Castro-Orgaz, Auteur ;
Willi H. Hager, Auteur
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Flows from mild to steep slopes are relevant in hydraulic engineering relating to chute spillways and slope changes in irrigation networks. These flows are associated with transitional flow from sub- to supercritical conditions, smooth curviline[...]
Article : texte imprimé
Lukas Schmocker, Auteur ;
Willi H. Hager, Auteur
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Dikes along rivers protect a valley and its people and property from floods. Recent dike failures due to overtopping highlight the need to understand this damage process. Its accurate prediction is essential to develop effective emergency action[...]
Article : texte imprimé
Michio Sanjou, Auteur ;
Iehisa Nezu, Auteur
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Meandering compound open-channel flow is of high interest in river engineering and flood disaster. In particular, cross-sectional secondary currents develop significantly associated with an interaction between meandering inbank main-channel flow[...]
Article : texte imprimé
John P. Raiford, Auteur ;
Abdul A. Khan, Auteur
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The combined influence of the free surface and the bed on the flow characteristics of circular turbulent jets issued at mid-plane into shallow, stagnant ambient fluid is investigated using a physical model study. A total of nine experiments have[...]
Article : texte imprimé
David F. Hill, Auteur ;
Brian D. Younkin, Auteur
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A simple procedure for predicting the time evolution and equilibrium size of the two dimensional bedform created by a turbulent wall jet is presented. The model applies to a planar jet discharging flush with and parallel to an initially horizont[...]
Article : texte imprimé
Bijoy S. Mazumder, Auteur ;
Dibyendu K. Pal, Auteur ;
Koeli Ghoshal, Auteur
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The objective of this research is to examine the turbulent flow characteristics over artificial waveform structures and to compare turbulence between two types of isolated geometries. Measurement of turbulent velocity components have been perfor[...]
Article : texte imprimé
Albert Dai, Auteur ;
Marcelo H. Garcia, Auteur
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A dense inflow from a river into a lake or reservoir initiates gravity currents through a plunging process with intense mixing. The classic two-control-volume theory for the analysis of plunging phenomena has been recently corrected. In particul[...]
Article : texte imprimé
Kang, Hyeongsik, Auteur ;
Choi, Sung-Uk, Auteur
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Numerical experiments involving various algebraic scalar flux models for solute transport in open channel flows are presented. Five algebraic scalar flux models including these of Daly and Harlow, Abe and Suga, Suga and Abe, Sommer and So, and W[...]
Article : texte imprimé
Vahid Nourani, Auteur ;
Siamak Talatahari, Auteur ;
Parviz Monadjemi, Auteur
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Artificial open channels are expensive infrastructure in terms of material, construction and maintenance and application of optimization models has a great role in minimizing their cost. Two optimization approaches for the cross-sectional design[...]
Article : texte imprimé
Gerald Muller, Auteur ;
James Senior, Auteur
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The Archimedean screw pump is one of the oldest hydraulic machines. Today, it is employed in pumping as well as - operating in reverse - in an energy conversion role. Despite its age, no consistent theory links the screw’s geometry with its mech[...]
Article : texte imprimé
Tim Fischer-Antze, Auteur ;
Nils Ruther, Auteur ;
Nils R. B. Olsen, Auteur
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A fully three-dimensional non-hydrostatic model was applied to compute the water flow and morphodynamic processes in a laboratory flume. The experiments provided data for bed deformation and grain sorting processes in a 180° channel bend. The da[...]
Article : texte imprimé
Jaak Heinloo, Auteur ;
Aleksander Toompuu, Auteur
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A model to calculate the vertical distribution of the average velocity in the oscillating turbulent boundary layer forced by the overlaying oscillating free flow is discussed. The model is founded on the Rotationally Anisotropic Turbulence theor[...]
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