Journal of hydraulic research, Vol. 47 N° 2+ Supplément. Journal of hydraulic research - Mars/Avril 2009
| Titre : | Journal of hydraulic research, Vol. 47 N° 2+ Supplément. Journal of hydraulic research - Mars/Avril 2009 |
| Type de document : | Bulletin |
| Paru le : | 13/07/2009 |
Dépouillements
Article : texte imprimé
Arturo S. Leon, Auteur ;
Mohamed S. Ghidaoui, Auteur ;
Arthur R. Schmidt, Auteur
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A robust model for simulating the simultaneous occurrence of free surface and pressurized flows is presented using the Preissmann slot approach for modeling pressurized flows. This model is capable of simulating transient flows in closed conduit[...]
Article : texte imprimé
Oscar Castro-Orgaz, Auteur ;
Subhasish Dey, Auteur
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The one-dimensional (1D) momentum equation for free surface flow over curved boundaries has so far been traditionally developed integrating the Reynolds equations across the flow section in a boundary-fitted system of coordinates, such as flows [...]
Article : texte imprimé
Mevlut Sami Akoz, Auteur ;
Mehmet Salih Kirkgoz, Auteur ;
Ahmet Alper Oner, Auteur
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Laboratory experiments are conducted to measure the velocities of 2D turbulent open channel flow upstream of a vertical sluice gate. The flow case having the same conditions with the experiment is analyzed by computational fluid dynamics simulat[...]
Article : texte imprimé
Yang, Shu-Qing, Auteur
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An attempt was made to explain deviations of measured Reynolds-shear stresses from the linear distribution and measured velocity u from the log-law in decelerating flows. Starting from the Reynolds equations, this investigation shows that the mo[...]
Article : texte imprimé
Oscar Castro-Orgaz, Auteur
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A turbulent boundary layer develops if water flows down a chute. This region is referred to as the developing zone, where a turbulent boundary layer coexists with a irrotational flow above it. No computational approach is currently available for[...]
Article : texte imprimé
Creaco,Enrico, Auteur ;
Bertrand-Krajewski, Jean-Luc, Auteur
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Results of numerical modeling of sediment flushing in a combined sewer reach are herein presented. Simulations were performed by using a numerical model based on the solution of the De SaintVenant–Exner equations by the TVD MacCormack scheme. Th[...]
Article : texte imprimé
Abbas Yeganeh-Bakhtiary, Auteur ;
Behnam Shabani, Auteur ;
Hitoshi Gotoh, Auteur
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A three-dimensional model is developed to simulate bed-load transport using Distinct Element Method (DEM). The model describes the bed-load transport as dynamically interdependent motions of individual sediment particles under the flow action. A[...]
Article : texte imprimé
P. Blondeaux, Auteur ;
G. Vittori, Auteur
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To investigate the formation of the sand waves generated by tide propagation, the stability of a flat sea bottom forced by tidal currents is often analyzed. Both quasi-steady and unsteady approaches are used. The steady approaches consider a ste[...]
Article : texte imprimé
Mustafa Sasal, Auteur ;
Shalini Kashyap, Auteur ;
Colin D. Rennie, Auteur
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A talented soft computational technique is applied to predict bedload sediment discharge in rivers. The feedforward–backpropagated (Levenberg–Marquardt algorithm) Artificial Neural Network (ANN) architecture is employed without any restriction t[...]
Article : texte imprimé
Marco Ferrante, Auteur ;
Bruno Brunone, Auteur ;
Silvia Meniconi, Auteur
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An edge detection technique is applied herein to improve leak detection for pressurized pipe flow, based on a transient test analysis. The information contained in a signal is interpreted, especially when it is sharp and isolated: The sudden bri[...]
Article : texte imprimé
Yildirim, Nevzat, Auteur ;
Kerem Tastan, Auteur ;
Muammer Mustafa Arslan, Auteur
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The effects of dimensions and relative positions of two (a dual) pipe intakes on the critical submergence are investigated. A dimensional analysis provided the relationship between the critical submergence and the governing dimensionless variabl[...]
Article : texte imprimé
Alessio Radice, Auteur ;
Francesco Ballio, Auteur ;
Giovanni Porta, Auteur
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Results for a local scour experiment are presented where the sediment motion was measured around a trapezoidal abutment. The experiment was performed in clear-water conditions. The sediment fluxes were evaluated by measuring the concentration an[...]
Article : texte imprimé
Aristeidis A. Bloutsos, Auteur ;
Yannopoulos, Panayotis C., Auteur
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The simplified partial differential equations of momentum and tracer for the mean motion are integrated on the reduced cross-sectional area within the field of one buoyant jet from a group issued vertically upwards from a rosette-type riser. The[...]
Article : texte imprimé
Jonathan Mawuli Tsikata, Auteur ;
Chris Katopodis, Auteur ;
Mark Francis Tachie, Auteur
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An experimental study of turbulent open channel flownear trashrack models is reported. The trashrack models comprised of an array of rectangular bars of identical thickness. The experiments were conducted for a fixed bar depth but different cent[...]
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