scholarly journals Liquid jet formation through the interactions of a laser-induced bubble and a gas bubble

AIP Advances ◽  
2017 ◽  
Vol 7 (10) ◽  
pp. 105305 ◽  
Author(s):  
Bing Han ◽  
Liu Liu ◽  
Xiong-Tao Zhao ◽  
Xiao-Wu Ni
Keyword(s):  
Liquid Jet ◽  
Gas Bubble ◽  
Jet Formation

Liquid jet formation during a suspended liquid suction process

2020 ◽  
Vol 114 ◽  
pp. 109952
Author(s):  
Liang Hu ◽  
Hanghang Xu ◽  
Mingbo Li ◽  
Weiting Liu ◽  
Wenyu Chen ◽  
...  
Keyword(s):  
Liquid Jet ◽  
Jet Formation

Bubble collapse and liquid jet formation in non-newtonian liquids

AIChE Journal ◽  
1999 ◽  
Vol 45 (12) ◽  
pp. 2653-2656 ◽  
Author(s):  
S. W. J. Brown ◽  
P. R. Williams
Keyword(s):  
Bubble Collapse ◽  
Liquid Jet ◽  
Jet Formation ◽  
Newtonian Liquids

Regimes during liquid drop impact on a liquid pool

2015 ◽  
Vol 768 ◽  
pp. 492-523 ◽  
Author(s):  
Bahni Ray ◽  
Gautam Biswas ◽  
Ashutosh Sharma
Keyword(s):  
Vortex Ring ◽  
Liquid Drop ◽  
Liquid Pool ◽  
Ring Formation ◽  
Gas Bubble ◽  
Jet Formation ◽  
Vortex Ring Formation ◽  
Water Drops ◽  
Regime Map ◽  
The Impact

Water drops falling on a deep pool can either coalesce to form a vortex ring or splash, depending on the impact conditions. The transition between coalescence and splashing proceeds via a number of intermediate steps, such as thick and thin jet formation and gas-bubble entrapment. We perform simulations to determine the conditions under which bubble entrapment and jet formation occur. A regime map is established for Weber numbers ranging from 50 to 300 and Froude numbers from 25 to 600. Vortex ring formation is seen for all of the regimes; it is greater for the coalescence regime and less in the case of the thin jet regime.

scholarly journals Effects of a water hammer and cavitation on jet formation in a test tube

2015 ◽  
Vol 787 ◽  
pp. 224-236 ◽  
Author(s):  
Akihito Kiyama ◽  
Yoshiyuki Tagawa ◽  
Keita Ando ◽  
Masaharu Kameda
Keyword(s):  
Pressure Wave ◽  
Flow Analysis ◽  
Water Hammer ◽  
Test Tube ◽  
Liquid Interface ◽  
Phase Changes ◽  
Liquid Jet ◽  
Jet Formation ◽  
Wave Interactions ◽  
The One

We investigate the motion of a gas–liquid interface in a test tube induced by a large acceleration via impulsive force. We conduct simple experiments in which the tube partially filled with a liquid falls under gravity and hits a rigid floor. A curved gas–liquid interface inside the tube reverses and eventually forms a so-called focused jet. In our experiments, there arises either vibration of the interface or an increment in the velocity of the liquid jet, accompanied by the onset of cavitation in the liquid column. These phenomena cannot be explained by a considering pressure impulse in a classical potential flow analysis, which does not account for finite speeds of sound or phase changes. Here we model such water-hammer events as a result of the one-dimensional propagation of a pressure wave and its interaction with boundaries through acoustic impedance mismatching. The method of characteristics is applied to describe pressure-wave interactions and the subsequent cavitation. The model proposed is found to be able to capture the time-dependent characteristics of the liquid jet.

Behavior of a single coherent gas bubble chain and surrounding liquid jet flow structure

2005 ◽  
Vol 60 (17) ◽  
pp. 4886-4900 ◽  
Author(s):  
Toshiyuki Sanada ◽  
Masao Watanabe ◽  
Tohru Fukano ◽  
Akira Kariyasaki
Keyword(s):  
Flow Structure ◽  
Jet Flow ◽  
Liquid Jet ◽  
Gas Bubble ◽  
Surrounding Liquid

Jet formation in shock-heavy gas bubble interaction

2013 ◽  
Vol 29 (1) ◽  
pp. 24-35 ◽  
Author(s):  
Zhi-Gang Zhai ◽  
Ting Si ◽  
Li-Yong Zou ◽  
Xi-Sheng Luo
Keyword(s):  
Gas Bubble ◽  
Jet Formation ◽  
Bubble Interaction ◽  
Heavy Gas

Influence of viscosity on the capillary instability of a stretching jet

1987 ◽  
Vol 185 ◽  
pp. 361-383 ◽  
Author(s):  
I. Frankel ◽  
D. Weihs
Keyword(s):  
Differential Equation ◽  
Surface Tension ◽  
Free Surface ◽  
Flow Field ◽  
Past History ◽  
Time Lag ◽  
Time Derivative ◽  
Liquid Jet ◽  
Jet Formation ◽  
Damping Effect

The hydrodynamic stability of a rapidly elongating, viscous liquid jet such as obtained in shaped charges is presented. The flow field depends on three characteristic timescales associated with the growth of perturbations (due essentially to the effect of the surface tension), the elongation of the jet, and the inward diffusion of vorticity from the free surface, respectively. The latter process introduces a time lag resulting in the current values of the free-surface perturbation and its time derivative being a function of their past history. Solutions of the integro-differential equation for the evolution of disturbances exhibit a novel dual role played by the viscosity: besides the traditional damping effect it is associated with a destabilizing mechanism in the elongating jet. The wavelength of maximum instability is also a function of time elapsed since the jet formation, longer wavelengths becoming dominant at later stages. Understanding of these instability processes can help in both promoting and delaying instability as required by specific applications.

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