Closure to “Numerical Modeling of Submerged Hydraulic Jump from a Sluice Gate” by Veysel Gumus, Oguz Simsek, Nazire Goksu Soydan, Mevlut Sami Akoz, and Mehmet Salih Kirkgoz

2017 ◽  
Vol 143 (4) ◽  
pp. 07016021
Author(s):  
Veysel Gumus ◽  
Oguz Simsek ◽  
Nazire Goksu Soydan ◽  
Mevlut Sami Akoz ◽  
Mehmet Salih Kirkgoz
Keyword(s):  
Numerical Modeling ◽  
Hydraulic Jump ◽  
Sluice Gate ◽  
Submerged Hydraulic Jump

Numerical Modeling of Submerged Hydraulic Jump from a Sluice Gate

2016 ◽  
Vol 142 (1) ◽  
pp. 04015037 ◽  
Author(s):  
Veysel Gumus ◽  
Oguz Simsek ◽  
Nazire Goksu Soydan ◽  
Mevlut Sami Akoz ◽  
Mehmet Salih Kirkgoz
Keyword(s):  
Numerical Modeling ◽  
Hydraulic Jump ◽  
Sluice Gate ◽  
Submerged Hydraulic Jump

scholarly journals The length of the hydraulic jump on the basis of physical and numerical modeling

2018 ◽  
Vol 50 (1) ◽  
pp. 33-42
Author(s):  
Janusz Urbański ◽  
Piotr Siwicki ◽  
Adam Kiczko ◽  
Adam Kozioł ◽  
Marcin Krukowski
Keyword(s):  
Numerical Modeling ◽  
Physical Model ◽  
Computational Fluid Dynamic ◽  
Hydraulic Jump ◽  
Fluid Dynamic ◽  
Sluice Gate ◽  
Ansys Fluent ◽  
Measured Velocity ◽  
Stilling Basin ◽  
Research Goal

Abstract The outcomes of physical and numerical modeling of the sluice gate outflow are presented. The measured velocity distributions in verticals of a physical model were compared with results of numerical modeling, obtained using ANSYS Fluent software. The research goal was verification of suitability of the computational fluid dynamic (CFD) approach in determination of the hydraulic jump length at the outflow of the flow control structure. Studies were performed for the model of the sluice gate and stilling basin with two setups of baffle blocks: in one and two rows. The jump lengths were estimated by an analysis of vertical velocity profiles at the outflow. Two rows of baffle blocks in the stilling basin allowed to reduce the length of the hydraulic jump by 5–10%, comparing to the length with the single row of blocks. The computational fluid dynamic approach underestimated the length of the hydraulic jump by 4–7%, comparing to the physical model.

Experimental Study of Sand Sediments Effects on Submerged Hydraulic Jump Properties

2012 ◽  
Vol 212-213 ◽  
pp. 366-371
Author(s):  
Siavash Haghighi ◽  
Mohammad Reza Kavianpour ◽  
Keyvan Nasiri
Keyword(s):  
Energy Dissipation ◽  
Hydraulic Jump ◽  
Suspended Sediment Concentration ◽  
Sediment Load ◽  
Sediment Concentration ◽  
Relative Energy ◽  
Sluice Gate ◽  
Jump Length ◽  
Submerged Hydraulic Jump ◽  
Whole Sediments

Abstract. In this study, the effect of sediment concentration on submerged hydraulic jump (SHJ) characteristics such as jump length, submerged depth on the gate and the energy dissipation is investigated. Experiments were carried out in a flume of 46 cm depth, 12 m length. The width of the flume changes from 10 cm (at the entrance) to 60 cm (at the exit). Sediment load and flow concentration have an influence on submerged hydraulic jump characteristics including submerged depth on the gate, jump length and relative energy dissipation. It is shown that at high Froude numbers increasing the suspended sediment concentration to 28.7 gr/l leads to a reduction in the submerged depth on the gate up to 6% and jump length up to 10%. Also, the energy dissipation of the submerged hydraulic jump increases by 4% and turbulence resulting from the jump leads to upright distribution of concentration at the end of the jump. Also in concentrations higher than 30 gr/l, flow is not able to carry the whole sediments and subsequently leads to their deposition in subcritical area and behind the sluice gate.

Closure to “Submerged Hydraulic Jump”

1966 ◽  
Vol 92 (4) ◽  
pp. 154-156
Author(s):  
Nallamuthu Rajaratnam
Keyword(s):  
Hydraulic Jump ◽  
Submerged Hydraulic Jump

Mean Flow in a Submerged Hydraulic Jump with Baffle Blocks

2014 ◽  
Vol 140 (5) ◽  
pp. 04014020 ◽  
Author(s):  
Alireza Habibzadeh ◽  
Mark R. Loewen ◽  
Nallamuthu Rajaratnam
Keyword(s):  
Hydraulic Jump ◽  
Mean Flow ◽  
Submerged Hydraulic Jump

Three-dimensional study of spatial submerged hydraulic jump

2007 ◽  
Vol 34 (9) ◽  
pp. 1140-1148 ◽  
Author(s):  
H K Zare ◽  
R E Baddour
Keyword(s):  
Velocity Field ◽  
Hydraulic Jump ◽  
Three Dimensional ◽  
Head Loss ◽  
Acoustic Doppler Velocimeter ◽  
Hydraulic Jumps ◽  
Orthogonal Components ◽  
Sequent Depth ◽  
Channel Bottom ◽  
Submerged Hydraulic Jump

A three-dimensional (3D) study of spatial submerged hydraulic jumps (SSHJs) was carried out using a physical model for Froude numbers Fr1 = 2.00 and 3.75 and width ratios α = 0.20 and 0.33. Three orthogonal components of the velocity field were obtained with an acoustic Doppler velocimeter (ADV). The 3D velocity field has indicated that the jump consisted of a central jet-like flow, close to the channel bottom, surrounded by vertical and horizontal circulations (rollers). The circulation was predominantly in vertical planes in the channel central region of the flow and in horizontal planes close to the walls. Vertical and horizontal profiles of stream-wise velocity characterized the 3D roller with two length scales, Lrv and Lrh. The strength of the roller was stronger close to the walls than at the centreline of the jump. Sequent depth and energy head loss for submerged symmetric hydraulic jumps are discussed in terms of the submergence ratio S = y3/y2.Key words: hydraulic jump, spatial, submerged, roller length, sequent depth, energy dissipation.

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