Results 181 to 190 of about 304 (213)

Submerged Hydraulic Jumps below Abrupt Expansions

Journal of Hydraulic Engineering, 1999
In submerged flows below an expanding outlet, both symmetric and asymmetric flows are observed. The hydraulic conditions required to form a symmetric submerged jump are necessary for design purposes. In this study, the flow conditions are presented for the submerged flows at an abrupt-symmetrical expansion.
Iwao Ohtsu, Youichi Yasuda, Motoyasu Ishikawa   +2 more
openaire   +1 more source

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

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

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

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

Effect of Turbulence Models on the Submerged Hydraulic Jump Simulation

Прикладная механика и техническая физика, 2015
This study presents a numerical investigation and prediction of the flow field in threedimensional submerged hydraulic jumps. The volume of fluid (VOF) method is used to simulate the free surface. The turbulent structure is simulated by using different turbulence models, such as the standard k–e model, RNG k–e model, realizable k–e model, and Reynolds ...
Y. Shekari, M. Javan, A. Eghbalzadeh
openaire   +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

Discussion of “The Submerged Hydraulic Jump”

Journal of the Hydraulics Division, 1963
R. M. Advani, M. S. Misra, F. M. Henderson, D. H. Rockwood, P. B. Boyer   +4 more
  +4 more sources

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.
Yones Shekari, Mitra Javan, Afshin Eghbalzadeh   +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