scholarly journals The entrainment of air by water jet impinging on a free surface

2005 ◽  
Vol 39 (3) ◽  
pp. 498-506 ◽  
Author(s):  
Wee King Soh ◽  
Boo Cheong Khoo ◽  
W. Y. Daniel Yuen
Keyword(s):  
Free Surface ◽  
Water Jet

Validation of NEPTUNE_CFD Module with Data of a Plunging Water Jet Entering a Free Surface

2009 ◽  
Vol 167 (1) ◽  
pp. 60-70 ◽  
Author(s):  
M. C. Galassi ◽  
D. Bestion ◽  
C. Morel ◽  
J. Pouvreau ◽  
F. D’Auria
Keyword(s):  
Free Surface ◽  
Water Jet ◽  
Plunging Water Jet

Initial Free Surface Instabilities on a High-Speed Water Jet Simulating a Liquid-Metal Target

1999 ◽  
Vol 36 (1) ◽  
pp. 69-84 ◽  
Author(s):  
Kazuhiro Itoh ◽  
Yoshiyuki Tsuji ◽  
Hideo Nakamura ◽  
Yutaka Kukita
Keyword(s):  
Free Surface ◽  
Liquid Metal ◽  
High Speed ◽  
Water Jet ◽  
Metal Target

Water jet flow simulation and lithium free surface flow experiments for the IFMIF target

2002 ◽  
Vol 307-311 ◽  
pp. 1686-1690 ◽  
Author(s):  
M. Ida ◽  
H. Horiike ◽  
M. Akiba ◽  
K. Ezato ◽  
T. Iida ◽  
...  
Keyword(s):  
Free Surface ◽  
Flow Simulation ◽  
Free Surface Flow ◽  
Jet Flow ◽  
Surface Flow ◽  
Water Jet ◽  
Flow Experiments

Experimental Characterization of Air-Entrainment in a Plunging Water Jet System Using Particle Image Velocimetry (PIV)

2010 ◽  
Author(s):  
Xiaoliang Qu ◽  
Afshin Goharzadeh ◽  
Lyes Khezzar ◽  
Arman Molki
Keyword(s):  
Particle Image Velocimetry ◽  
Free Surface ◽  
Particle Image ◽  
Air Entrainment ◽  
Water Jet ◽  
Experimental Characterization ◽  
Free Jet ◽  
Image Velocimetry ◽  
Plunging Water Jet

This paper presents a detailed experimental study of a plunging jet on a free liquid surface. An experimental characterization facility is designed and constructed for generating a vertical round water jet impinging on a free surface of a pool. The experimental analysis focuses on the jet penetration depth, its relation to impact velocity Vj and free jet length Lj. Present results are compared with previous studies. The flowmap for four different regimes, in terms of impact jet velocity is obtained. The details of the two-dimensional velocity field below the pool liquid free surface under a no-entrainment regime, is obtained using Particle Image Velocimetry (PIV) and reveals the entrainment behavior of the impinging jet flow below the interface.

scholarly journals Exploration of water jet generated by Q-switched laser induced water breakdown with different depths beneath a flat free surface

2013 ◽  
Vol 21 (1) ◽  
pp. 445 ◽  
Author(s):  
Ross C. C. Chen ◽  
Y. T. Yu ◽  
K. W. Su ◽  
J. F. Chen ◽  
Y. F. Chen
Keyword(s):  
Free Surface ◽  
Water Jet ◽  
Different Depths

Propagation of perturbations and meandering in a free surface shallow water jet

2020 ◽  
Vol 61 (9) ◽  
Author(s):  
Massimo Miozzi ◽  
Giovanni Paolo Romano
Keyword(s):  
Free Surface ◽  
Shallow Water ◽  
Water Jet

scholarly journals Evaluation of Streamwise Waveform on a High-Speed Water Jet by Detecting Trajectories of Two Refracted Laser Beams

2011 ◽  
Vol 2011 ◽  
pp. 1-12
Author(s):  
Kazuhiro Itoh ◽  
Yasuo Iwata ◽  
Hiroshige Kumamaru ◽  
Yuji Shimogonya
Keyword(s):  
Free Surface ◽  
High Speed ◽  
Time Series Data ◽  
Slope Angle ◽  
Correlation Method ◽  
Water Jet ◽  
Laser Beams ◽  
Series Data ◽  
Angle Data ◽  
Surface Fluctuations

Free surface fluctuations on a high-speed water jet were measured by a laser beam refraction technique. This method can be used to obtain quantitative time-series data on local surface fluctuations. The developed system employs two pulsed laser diodes, and it uses a high-speed optical sensor to detect the instantaneous positions of the laser beams that are refracted at the free surface. Fluctuations in the slope angle are measured at two locations separated by 1.27 mm. The wave speed of each free surface wave, which is determined by the zero-upcrossing method, is experimentally evaluated by the cross-correlation method. A two-dimensional waveform is obtained by integrating the slope angle data. The local mean wavelength and mean wave steepness are evaluated for average jet velocities up to  m/s. Streamwise waveforms of the high-speed water jet at several locations exhibit appreciable asymmetry and have steep profiles.

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