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Computational simulation of radially asymmetric hydraulic jumps and jump–jump interactions
Computers & Fluids, 2018zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Digvijay Singh, Arup Kumar Das
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Turbulent thermohaline hydraulic jumps
Journal of Fluid Mechanics, 2021Turbulent entrainment properties of thermohaline internal hydraulic jumps in quiescent ambient water are investigated. Underflow and overflow jumps are considered. The study is mainly concerned with thermohaline buoyancy effects on flow development.
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Journal of the Hydraulics Division, 1971
It has been shown that the existing definitions of the efficiency of hydraulic jump do not furnish a correct picture of the physical phenomenon. A more rational definition of the efficiency of hydraulic jump on a horizontal floor in a rectangular channel is given by the ratio of the energy actually dissipated in the jump to that required to be ...
Satya P. Garg, Hari R. Sharma
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It has been shown that the existing definitions of the efficiency of hydraulic jump do not furnish a correct picture of the physical phenomenon. A more rational definition of the efficiency of hydraulic jump on a horizontal floor in a rectangular channel is given by the ratio of the energy actually dissipated in the jump to that required to be ...
Satya P. Garg, Hari R. Sharma
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Transitional Expanding Hydraulic Jump
Journal of Hydraulic Engineering, 2012This note presents the general features of velocity and variation in length scales of the transition expanding jump, free jump, and wall jet in the rectangular horizontal open channel. The experiments were performed for a range of Froude numbers from 2 to 6 and at an abrupt expansion ratio of 2.
Esmaeil Kordi, Ismail Abustan
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Journal of Fluid Mechanics, 1981
The circular hydraulic jump commonly forms on a horizontal plate struck by a vertical jet of liquid. New observations of this phenomenon are described. A previously unreported instability of the jump is examined. This is shown to arise when the local Reynolds number R j just ahead of the jump exceeds a critical value of 147.
A. D. D. Craik +3 more
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The circular hydraulic jump commonly forms on a horizontal plate struck by a vertical jet of liquid. New observations of this phenomenon are described. A previously unreported instability of the jump is examined. This is shown to arise when the local Reynolds number R j just ahead of the jump exceeds a critical value of 147.
A. D. D. Craik +3 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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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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Journal of the Hydraulics Division, 1978
When a supercritical flow in a channel is forced to change into a subcritical flow, the transition will normally occur as a hydraulic jump, and the energy loss in the jump will be large. With increasing supercritical depth and decreasing difference between the corresponding depths the energy loss will diminish and the transition will at last occur in ...
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When a supercritical flow in a channel is forced to change into a subcritical flow, the transition will normally occur as a hydraulic jump, and the energy loss in the jump will be large. With increasing supercritical depth and decreasing difference between the corresponding depths the energy loss will diminish and the transition will at last occur in ...
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Upstream Internal Hydraulic Jumps
Journal of Physical Oceanography, 2006Abstract In stratified tidal flow over a sill, the character of the upstream response is determined by a Froude number Fs based on the stratification near the surface. This is distinguished from the Froude number governing the response in the neighborhood of the sill crest, which is based on the weak density step associated with a flow ...
Patrick F. Cummins +2 more
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Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1964
A stream of swirling water descending a vertical Perspex tube was obstructed near its exit from the apparatus. In this way hydraulic ‘jumps’ were formed with an unbroken air core extending on both sides of the discontinuity. As in an open horizontal channel, three kinds of jump were seen: (i) purely undular, (ii) partly undular and partly turbulent ...
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A stream of swirling water descending a vertical Perspex tube was obstructed near its exit from the apparatus. In this way hydraulic ‘jumps’ were formed with an unbroken air core extending on both sides of the discontinuity. As in an open horizontal channel, three kinds of jump were seen: (i) purely undular, (ii) partly undular and partly turbulent ...
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