Journal of hydraulic research, Vol. 47 N°1. Journal of hydraulic research - 2009
| Titre : | Journal of hydraulic research, Vol. 47 N°1. Journal of hydraulic research - 2009 |
| Type de document : | Bulletin |
| Paru le : | 18/03/2009 |
Dépouillements
Article : texte imprimé
Shiono, K., Auteur ;
Tony L. Chan, Auteur ;
Jake Spooner, Auteur
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Studies were carried out to understand the effect of floodplain roughness on flow structures, sediment transport rates and bedforms in a mobile meandering channel with overbank flows. Three floodplain roughnesses were examined in this study. Flo[...]
Article : texte imprimé
Shiono, K., Auteur ;
Tony L. Chan, Auteur ;
Jake Spooner, Auteur
|
A series of experiments were conducted to understand the behaviour of flow resistance and sediment transport rate within compound meandering channel whilst changing floodplain roughness. The detailed flow structures with bedforms were reported i[...]
Article : texte imprimé
Christian Koch, Auteur ;
Chanson, Hubert, Auteur
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A positive surge results from a sudden change in flow that increases the flow depth. New experiments were conducted in a large channel. Most positive surge tests were conducted with a horizontal bed slope, a constant flow rate and uncontrolled f[...]
Article : texte imprimé
Chanson, Hubert, Auteur
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In dam break waves, the surge front is a sudden discontinuity characterized by extremely rapid variations of flow depth and velocity. In this study, simple analytical solutions for instantaneous dam break wave are developed using the method of c[...]
Article : texte imprimé
Nicolas de Cacqueray, Auteur ;
David M. Hargreaves, Auteur ;
Herve P. Morvan, Auteur
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The assumption of uniform flow permits the computation of the bed mean shear stress in open channels from the knowledge of the bed slope, hydraulic radius and fluid density alone. It is however important to distinguish between bank and bed shear[...]
Article : texte imprimé
Kouki Onitsuka, Auteur ;
Juichiro Akiyama, Auteur ;
Sadakatsu Matsuoka, Auteur
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Turbulence measurements in open-channel flows with adverse pressure gradient were conducted with an X-type hot-film anemometer. The velocity profiles in whole depth are described well by the log-wake law which involves a wake strength parameter [...]
Article : texte imprimé
Bushra Afzal, Auteur ;
Abdullah Al Faruque, Auteur ;
Ram Balachandar, Auteur
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Three series of experiments were conducted to study the effect of Reynolds number, near-wall perturbation and turbulence on the velocity characteristics of smooth open-channel flows. Measurements were carried out using a laser Doppler anemometer[...]
Article : texte imprimé
Dipa Dey, Auteur ;
Eldho, T. I., Auteur
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The excessive scour action of jets near may lead to failure of hydraulic structures. Although jet scour was experimentally and numerically investigated, few literature is available on the scour effects of multiple jets. An effort was made to ana[...]
Article : texte imprimé
Sarbjit Singh, Auteur ;
Zulfequar Ahmad, Auteur ;
Umesh C. Kothyari, Auteur
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A numerical scheme based on the split-operator approach was developed for the solution of two-dimensional mixing equation with a transverse line-slug source in open channels. An exact solution of the advection equation was developed by adopting [...]
Article : texte imprimé
I. R. Gijs, Auteur ;
J. C. M. Hoffmans, Auteur
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This paper presents an update of a relation for jet scour in the equilibrium phase, originally developed by Hoffmans (1998). Newton’s law of motion is applied to a mass of fluid particles to derive a relation expressing maximum scour depth. With[...]
Article : texte imprimé
A. Melih Yanmaz, Auteur ;
Omer Kose, Auteur
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The computation of temporal variation of clear-water scour is important for the design of bridge foundations. Previous studies implied that a very long flow duration is needed to achieve equilibrium scour at bridge abutments. However, the corres[...]
Article : texte imprimé
A. T. Moncada-M, Auteur ;
J. Aguirrr-Pe, Auteur ;
J. C. Bolivar, Auteur
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Findings on further investigations on the effects produced by a collar around a circular pier and by the piercing of a rectangular slot for controlling the scour depth are presented. Experiments were conducted using uniform sand and a circular p[...]
Article : texte imprimé
Chunbo Jiang, Auteur ;
Chen Yang, Auteur ;
Dongfang Liang, Auteur
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The depth-integrated shallow-water equations are used to simulate shallow wake flow around a solid plate-like obstacle. Influences of different terms in the equations are analyzed by normalizing the momentum equation. A fractional step finite el[...]
Article : texte imprimé
Jens M. Scheffermann, Auteur ;
Richard L. Stockstill, Auteur
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The applicability of the commercial CFD-Program STAR-CD for hydraulic problems was evaluated by the pressure distribution downstream of an opening lock valve.Various valve operation speeds were modeled. This gave information about the possibilit[...]
Article : texte imprimé
David Werth, Auteur ;
Carl Frizzell, Auteur
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Recent changes in the Hydraulic Institute pump station intake design standards prohibit the formation of dye-core vortex activity in vertical pump intakes. Existing equations used to predict submergence vortex activity are intended for stronger [...]
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