Journal of hydraulic research, Vol. 45 N°1. Journal of Hydraulic Research - 2007
| Titre : | Journal of hydraulic research, Vol. 45 N°1. Journal of Hydraulic Research - 2007 |
| Type de document : | Bulletin |
| Paru le : | 07/03/2007 |
Dépouillements
Article : texte imprimé
Laanearu, Janek, Auteur ;
Davies, Peter A., Auteur
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Previous treatments of two-layer exchange flow in a rectangular channel have been extended to consider the effects of channel geometry upon the hydraulics of such flows. Attention has been focussed on exchange flows in “quadratic” channels, defi[...]
Article : texte imprimé
Chen, Su-Chin, Auteur ;
Peng, Szu-Hsein, Auteur ;
Capart, Hervé, Auteur
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The present computational study addresses two-layer shallow flows in which the superposed layers differ in velocity, density and rheology. The geomorphological phenomena motivating this model are confluence problems in which mud and debris surge[...]
Article : texte imprimé
Yan, Jing, Auteur ;
Cheng, Nian-Sheng, Auteur ;
Tang, Hong-Wu, Auteur ;
Keat Tan, Soon, Auteur
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Oscillating-grid turbulence (OGT) is characterized by its zero-mean flow, being two-dimensionally homogeneous in a certain region away from the grid plane. This homogeneous turbulence region that can be readily controlled is suitable for investi[...]
Article : texte imprimé
Lin, C., Auteur ;
Chang, K.-A., Auteur ;
Hseih, S.-C., Auteur ;
Hwung, W.-Y., Auteur
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The characteristics of flows over a vertical drop were investigated experimentally using laser Doppler velocimetry for detailed quantitative velocity measurements, and a flow visualization technique for qualitative study of flow pattern. A range[...]
Article : texte imprimé
Chanson, H., Auteur
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Rectangular dropshafts, commonly used in sewers and storm water systems, are characterized by significant flow aeration. New detailed air–water flow measurements were conducted in a near-full-scale dropshaft at large discharges. In the shaft poo[...]
Article : texte imprimé
Resonant responses in periodic turbulent flows: computations using a k – ε eddy viscosity model
Cotton, M. A., Auteur
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Periodically-oscillated pipe flows in which the bulk velocity is varied about a non-zero mean level (Ub = Ub0 [1 + γ cos ωt ]) are computed using a low-Reynolds-number k–ε turbulence model. Comparison is made with data for periodic pipe flow and[...]
Article : texte imprimé
Nii Odai, Samuel, Auteur ;
Kubo, Naritaka, Auteur
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In this paper, the ability of the Burgers equation model (BEM) to describe the monoclinal-rising-wave phenomenon is presented. The BEM is transformed by standardizing the initial and final normal flow depths; and by introducing a moving coordina[...]
Article : texte imprimé
Chiang, Wen-Son, Auteur ;
Hwung, Hwung-Hweng, Auteur ;
Hsiao, Shih-Chun, Auteur
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Numerical and physical experiments on bichromatic wave trains were conducted in deep water. The evolution of wave trains and corresponding spectra were investigated in this paper. The results indicate that the evolution of bichromatic wave train[...]
Article : texte imprimé
Bilus, I., Auteur ;
Škerget, L., Auteur ;
Predin, A., Auteur
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Cavitating flows are complex three dimensional flows with phase change in the low pressure regions. These are very sensitive to bubbles formation process and to velocity/pressure pulsations caused by turbulence. The presented cavitation model de[...]
Article : texte imprimé
Cheng, Yongguang, Auteur ;
Li, Jinping, Auteur ;
Yang, Jiandong, Auteur
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The ceiling-sloping tailrace tunnel is a new type of tailrace structure for underground hydropower stations and has been selected to replace the tailrace surge tanks in three large-scale hydropower plants in China. During the starting and load r[...]
Article : texte imprimé
Toombes, L., Auteur ;
Chanson, H., Auteur
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This study aims to provide some new understanding of the air–water flow properties in highvelocity water jets discharging past an abrupt drop. Such a setup has been little studied to date despite the relevance to bottom outlets. Downstream of th[...]
Article : texte imprimé
Gupta, I. D., Auteur ;
Pattanur, L. R., Auteur
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Hydrodynamic forces on gravity dams due to earthquakes depend in a complicated way on the deformation of the dam and the reservoir bottom absorption effects. This paper presents a simple practical approach to estimate the hydrodynamic forces wit[...]
Article : texte imprimé
Bayraktar, Alemdar, Auteur ;
Hançer, Ebru, Auteur
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The present paper presents a stochastic seismic analysis of fluid and fluid–solid systems by using Lagrangian approach. For this reason, authors have programmed variable-number-nodes two-dimensional isoparametric fluid finite elements in fortran[...]
Article : texte imprimé
Molino, B., Auteur
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In the present work, the migration of chemicals through the unsaturated zone of the aquifers has been analysed, with particular reference to the infiltration of petrol and diesel oil. According to the flow and transport basic equations for the v[...]
Article : texte imprimé
Swamee, Prabhata K., Auteur ;
Rathie, Pushpa N., Auteur
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The three basic and problems encountered in hydraulic engineering practice are the determination of the head loss, pipe diameter, and discharge. Out of these problems Swamee and Jain [J. Hydraul. Engng. ASCE 102 (1976) 657] gave exact solution f[...]
Article : texte imprimé
Debabeche, Mahmoud, Auteur ;
Bachir Achour, Auteur
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Hydraulic jumps are experimentally examined in a horizontal symmetrical triangular channel of 90º central angle. This study investigates the main features of both the minimum-B jump and the sill-controlled jump under various inflow conditions. T[...]
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