Journal of hydraulic research, Vol. 49 N° 3. Journal of hydraulic research - Mai/Juin 2011
| Titre : | Journal of hydraulic research, Vol. 49 N° 3. Journal of hydraulic research - Mai/Juin 2011 |
| Type de document : | Bulletin |
| Paru le : | 11/09/2011 |
Dépouillements
Article : texte imprimé
Alexander N. Sukhodolov, Auteur ;
Vladimir I. Nikora, Auteur ;
Viktor M. Katolikov, Auteur
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Geopolitical conflicts, for which the last century is so notorious, have obscured the lives and achievements of many talented scientists. Kirill Vladimirovich Grishanin, Professor of Fluvial Hydraulics and Channel Processes of the St. Petersburg[...]
Article : texte imprimé
Scale effects arise due to force ratios which are not identical between a model and its real-world prototype and result in deviations between the up-scaled model and prototype observations. This review article considers mechanical, Froude and Re[...]
Article : texte imprimé
Yueling Wang, Auteur ;
Liang, Qiuhua, Auteur ;
Kesserwani, Georges, Auteur
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Dam-break flows usually occur in domains with complex geometric and topographic features and involve abrupt flow patterns. A dam-break model must therefore be able to effectively handle different flow types including transcritical flows or hydra[...]
Article : texte imprimé
Jan Sieben, Auteur ;
Arno M. Talmon, Auteur
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In rivers, dune crest patterns are not always perpendicular to the main flow direction, because deviations up to around 20° have been observed. These can affect the direction of sediment transport, but the available predictors for models do not [...]
Article : texte imprimé
Michael Tritthart, Auteur ;
Bernhard Schober, Auteur ;
Helmut Habersack, Auteur
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The development and validation of an integrated numerical sediment transport model capable of solving both uniform and non-uniform transport equations while calculating grain size distributions is presented. The model is coupled with external hy[...]
Article : texte imprimé
Michael Tritthart, Auteur ;
Marcel Liedermann, Auteur ;
Bernhard Schober, Auteur
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The objectives of this research are to verify a numerical sediment transport model based on field data from a reach of the Austrian Danube River, to identify the influence of non-uniform bed-load transport modelling and the selected bed schemati[...]
Article : texte imprimé
Qin, Jie, Auteur ;
Sai Leung Ng, Auteur
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This study investigates the roughness of water-worked gravel surfaces using stable gravel-beds armoured in flume and field experiments. As an alternative to traditional approaches, multifractal analysis is employed to investigate the roughness o[...]
Article : texte imprimé
Erica Camnasio, Auteur ;
Enrico Orsi, Auteur ;
Anton J. Schleiss, Auteur
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Velocity fields in rectangular shallow reservoirs with different length-to-width and expansion ratios were investigated in an experimental study, to evaluate the effect of geometry on the flow field. A wide range of combinations of these two non[...]
Article : texte imprimé
Olivier Machiels, Auteur ;
Sebastien Erpicum, Auteur ;
Benjamin J. Dewals, Auteur
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The Piano Key Weir is a type of labyrinth weir using overhangs to reduce the footprint of the foundation. These are directly placed on a dam crest. Together with its high discharge capacity for low heads, this geometry makes these weirs interest[...]
Article : texte imprimé
Laurent Goutiere, Auteur ;
Soares-Frazão, Sandra, Auteur ;
Yves Zech, Auteur
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This research presents experiments of dam-break flow on mobile bed in an abruptly expanding channel, the wider section being twice as wide as the narrow. The bed material consisted of coarse uniform sand. The flow near the one-sided flume expans[...]
Article : texte imprimé
Mario Oertel, Auteur ;
Svenja Peterseim, Auteur ;
Andreas Schlenkhoff, Auteur
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Block ramps are a common natural solution for bypassing large steps in riverbeds. The energy dissipation on these ramps was dealt with to develop formulas describing the hydraulic processes. Currently there are no detailed investigations availab[...]
Article : texte imprimé
Gangarudraiah Veerappadevaru, Auteur ;
Thimmaiah Gangadharaiah, Auteur ;
Thirumalai Ramaswamyiyenger, Auteur
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An experimental investigation to predict the characteristics of scour vortices related to the scour depth of caisson piers was conducted. Two median size sediments were used as bed materials. Three types of piers, namely a cylindrical pier, a cy[...]
Article : texte imprimé
Yunliang Chen, Auteur ;
Chao Wu, Auteur ;
Bo Wang, Auteur
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Compared with the Blasius similarity approach for the boundary layer theory, a similarity solution for dam-break flow on a horizontal channel with zero friction is considered by the theory of scale transformation. Time and space coordinates as t[...]
Article : texte imprimé
Jan, Chyan-Deng, Auteur ;
Quang-Truong Nguyen, Auteur
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This research presents investigations on the discharge coefficient of a circular orifice located at the apex of an inverted conical hopper attached to the bottom of a cylindrical vortex chamber. A circular jet inflow tangentially enters the vort[...]
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