Results 231 to 240 of about 420 (258)

Turbulence schemes for modelling a submerged hydraulic jump

Proceedings of the Institution of Civil Engineers - Engineering and Computational Mechanics, 2013
In this paper, a submerged hydraulic jump is modelled using k–ε and renormalisation group (RNG) turbulent schemes with standard coefficients. The computed results of mean and turbulent flow properties for three different cases of inlet Froude number and submergence ratio are compared with the measured data.
John P. Raiford, Abdul A. Khan
openaire   +1 more source

Submerged Hydraulic Jump Study Using DES

Journal of Hydraulic Engineering, 2017
AbstractIn the present paper, three-dimensional, unsteady, detached eddy simulation (DES) of a submerged hydraulic jump with an inlet Froude number of 8.2 is performed. The volume of fluid (VOF) method with a high-resolution interface capturing (HRIC) scheme is used for free-surface tracking.
Vimaldoss Jesudhas, Vesselina Roussinova, Ram Balachandar, Ron Barron   +3 more
openaire   +1 more source

Exploratory Study of Submerged Hydraulic Jumps with Blocks

Journal of Hydraulic Engineering, 2011
A preliminary study on submerged jumps with baffle walls and blocks downstream of a sluice gate was conducted. Two series of experiments were carried out on baffle walls and baffle blocks. The momentum equation was utilized to derive a relation for the drag coefficient that was validated by the experimental data of the baffle wall series.
A. Habibzadeh, S. Wu, F. Ade, N. Rajaratnam, M. R. Loewen   +4 more
openaire   +1 more source

Performance of Baffle Blocks in Submerged Hydraulic Jumps

Journal of Hydraulic Engineering, 2012
AbstractAn experimental study was conducted investigating submerged hydraulic jumps with baffle blocks. An extensive series of tests were completed that covered a range of Froude numbers, submergence factors, and block arrangements. Dimensional analysis was used to interpret the results and study the effect of each parameter.
A. Habibzadeh, M. R. Loewen, N. Rajaratnam   +2 more
openaire   +1 more source

LDA study of flow structure in submerged hydraulic jump

Journal of Hydraulic Research/De Recherches Hydrauliques, 1990
This 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 ...
P M Steffler, N Rajaratnam
exaly   +2 more sources

Numerical study of a symmetric submerged spatial hydraulic jump

Journal of Hydraulic Research, 2019
Hydraulic jumps are often employed as energy dissipators below hydraulic structures. If a high-velocity conduit drains into an expanding open channel a spatial hydraulic jump can be formed.
Vimaldoss Jesudhas, Ram Balachandar, Tirupati Bolisetti   +2 more
openaire   +1 more source

Three-dimensional Numerical Study of Submerged Hydraulic Jumps

Arabian Journal for Science and Engineering, 2014
A hydraulic jump with strong turbulent mixing and air bubble entrainment is regarded as a transition process of a supercritical flow into a subcritical flow. In this study, the three-dimensional submerged hydraulic jumps were investigated numerically.
Mitra Javan, Afshin Eghbalzadeh, Javan Mitra   +2 more
exaly   +2 more sources

Characteristics of free and submerged hydraulic jumps in different stilling basins

Proceedings of the Institution of Civil Engineers - Water Management, 2020
A comprehensive study on free and submerged hydraulic jumps in different stilling basins was carried out. The effects of three adverse slopes, three bed roughnesses and three positive step heights on the hydraulic jump characteristics with a Froude number of 4·56–9·55 and a submergence factor of 0·1–1·5 were investigated.
Nahid Pourabdollah, Manouchehr Heidarpour, Jahangir Abedi Koupai   +2 more
openaire   +1 more source

Three-dimensional study of spatial submerged hydraulic jump

Canadian Journal of Civil Engineering, 2007
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).
H K Zare, R E Baddour
openaire   +1 more source

Experimental Study of Submerged Hydraulic Jumps with Baffle Blocks

2013
The current work presents the results of an experimental study on the effects of submergence on the performance of a submerged hydraulic jump with baffle blocks downstream of a sluice gate. A wide range of Froude numbers, submergence factors, and block sizes, locations and arrangements were covered in the experiments. It was observed that, depending on
openaire   +1 more source