Results 171 to 180 of about 304 (213)
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Mean Flow in a Submerged Hydraulic Jump with Baffle Blocks
Journal of Engineering Mechanics - ASCE, 2014AbstractThe flow in a submerged hydraulic jump with three-dimensional (3D) baffle blocks was experimentally studied. An incoming jet with varying supercritical Froude numbers was deflected with one or two rows of 3D baffle blocks for different downstream water depths.
Alireza Habibzadeh +2 more
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LDA study of flow structure in submerged hydraulic jump
Journal of Hydraulic Research/De Recherches Hydrauliques, 1990This paper presents the results of a Laser Doppler Anemometry (LDA) study of submerged hydraulic jumps in a horizontal rectangular channel of constant width with the submergence factor S varying approximately from 0.20 to 1.70 and inlet Froude number Fx approximately equal to 3.0, 5.5 and 8JX Measurements include surface profiles, mean velocity ...
N Rajaratnam
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The submerged hydraulic jump in an abrupt lateral expansion
Journal of Hydraulic Research/De Recherches Hydrauliques, 1989The occurrence of a submerged hydraulic jump in a low head canal regulating structure with piers is considered. The problem is three-dimensional because of the abrupt lateral expansion at the end of the piers. The jump dynamics is affected by this expansion, and this effect should be taken into account in calculating the hydraulics for the structure.
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Journal of the Hydraulics Division, 1963
A definition sketch is proposed for the submerged hydraulic jump with the introduction of a submergence factor. Theoretical and empirical equations have been developed for the prominent flow parameters. The energy loss in the submerged jump has been shown to be considerably less than that in the corresponding free jump for higher submergences.
N. S. Govinda Rao, N. Rajaratnam
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A definition sketch is proposed for the submerged hydraulic jump with the introduction of a submergence factor. Theoretical and empirical equations have been developed for the prominent flow parameters. The energy loss in the submerged jump has been shown to be considerably less than that in the corresponding free jump for higher submergences.
N. S. Govinda Rao, N. Rajaratnam
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Submerged Radial Hydraulic Jump
Journal of the Hydraulics Division, 1980A slight flaring of the side walls of the stilling basin can be advantageous in reducing the exit velocities. The hydraulic jump in such a stilling basin is referred to as a radial hydraulic jump. When the sluice gates discharge directly to the stilling basin, a submerged radial hydraulic jump will probably occur. An experimental study produced surface
John A. McCorquodale +1 more
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Numerical calculation of submerged hydraulic jumps
Journal of Hydraulic Research, 2001The turbulence characteristics of submerged hydraulic jumps have been investigated numerically by means of the standard k-e turbulence model. The concept of a fractional volume of fluid (VOF) is employed to track the moving free surface. Numerical predictions include surface profiles, hydrodynamic pressures, mean velocities, turbulence intensities and ...
F. Ma, Y. Hou, P. Prinos
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A numerical study of submerged hydraulic jumps
Journal of Hydraulic Research, 1991A standard two-dimensional k-e turbulence model is used to predict the mean flow and turbulence characteristics of submerged hydraulic jumps. An offset control volume method is developed to facilitate computation of the variable free surface. The numerical predictions are compared with experimental measurements under three conditions with supercritical
Dejiang Long +2 more
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Analysis of the submerged radial hydraulic jump
Canadian Journal of Civil Engineering, 1985Most of the research work on hydraulic jumps has dealt with their macroscopic behaviour. The important parameters in these studies were the sequent depth ratio and the jump length required for stilling basin design. Unfortunately, the internal flow in submerged radial hydraulic jumps has received very little attention. A complete mathematical model of
Sameh M. Abdel-Gawad +1 more
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Journal of the Hydraulics Division, 1965
This paper presents a study of the submerged hydraulic jump as the case of a plane turbulent wall jet under adverse pressure gradient with backward flow on top. Using the experimental results of the author for the forward flow and those of Liu and Henry for the backward flow, a method has been devised to predict the surface profile, and the fall of the
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This paper presents a study of the submerged hydraulic jump as the case of a plane turbulent wall jet under adverse pressure gradient with backward flow on top. Using the experimental results of the author for the forward flow and those of Liu and Henry for the backward flow, a method has been devised to predict the surface profile, and the fall of the
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Backward Flow Velocities of Submerged Hydraulic Jumps
Journal of Hydraulic Engineering, 2001This paper describes an experimental investigation of submerged hydraulic jumps forming downstream of overflow structures.
Hans J. Leutheusser, Jerry J. Fan
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