Numerical simulation of the spreading of aerated and nonaerated turbulent water jet in a tank with finite water depth

Yakun Guo

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Numerical simulations are carried out to investigate the spreading of two-dimensional plane turbulent aerated and nonaerated jets in a tank filled with finite water depth. A multiphase model is applied to simulate the problem under investigation. The governing equations, their numerical scheme and the boundary conditions are presented. Aerated and non-aerated turbulent jets are simulated for a range of the jet velocity and width at exit, the initial air content at exit and the water depth in tank. The simulated results show that a self-similar Gaussian velocity distribution exists from the distance downstream being larger than five jet slot width for both the aerated and nonaerated jets. Good agreement between the simulated velocity profiles and available laboratory experiments is obtained. The simulated slope of the jet velocity decay along the jet centreline is in good agreement with the experimental measurements. The effect of air content on pressure distribution and the maximum impinging hydrodynamic pressure at the tank bottom is discussed.
Original languageEnglish
Article number04014034
Number of pages7
JournalJournal of Hydraulic Engineering
Volume140
Issue number8
Early online date18 Apr 2014
DOIs
Publication statusPublished - Aug 2014

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water depth
Computer simulation
simulation
Water
water
air
Air
velocity profile
Velocity distribution
Pressure distribution
boundary condition
Hydrodynamics
hydrodynamics
Boundary conditions
Experiments
distribution

Keywords

  • simulation
  • turbulence
  • aeration
  • jets (fluid)

Cite this

Numerical simulation of the spreading of aerated and nonaerated turbulent water jet in a tank with finite water depth. / Guo, Yakun.

In: Journal of Hydraulic Engineering, Vol. 140, No. 8, 04014034, 08.2014.

Research output: Contribution to journalArticle

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