scholarly journals Bubble collapse and jet formation in corner geometries

2018 ◽  
Vol 3 (8) ◽  
Author(s):  
Yoshiyuki Tagawa ◽  
Ivo R. Peters
Keyword(s):  
Bubble Collapse ◽  
Jet Formation

Bubble collapse and jet formation inside a liquid film

2021 ◽  
Vol 33 (11) ◽  
pp. 112102
Author(s):  
Ehsan Mahravan ◽  
Daegyoum Kim
Keyword(s):  
Liquid Film ◽  
Bubble Collapse ◽  
Jet Formation

scholarly journals Conserved quantities for axisymmetric cavities near boundaries

1990 ◽  
Vol 41 (2) ◽  
pp. 215-222
Author(s):  
R. Paull ◽  
J.R. Blake
Keyword(s):  
Perfect Fluid ◽  
Volume Change ◽  
Global Model ◽  
Bubble Collapse ◽  
Conserved Quantities ◽  
Jet Formation ◽  
Rigid Boundary ◽  
Cavity Collapse ◽  
Conservation Principles ◽  
Axisymmetric Cavities

In axisymmetric irrotational flows of a perfect fluid under gravity there are three basic conserved quantities; axial momentum, energy and a circulation based, radial moment of momentum. This paper adapts these conservation principles to describe cavity collapse adjacent to a rigid boundary in a semi-infinite perfect fluid. They afford a global model accounting for volume change, migration and jet formation; physically the most significant features of bubble collapse close to a rigid boundary.

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

On the scaling of jetting from bubble collapse at a liquid surface

2017 ◽  
Vol 822 ◽  
pp. 791-812 ◽  
Author(s):  
Sangeeth Krishnan ◽  
E. J. Hopfinger ◽  
Baburaj A. Puthenveettil
Keyword(s):  
Power Law ◽  
Scaling Laws ◽  
Liquid Surface ◽  
Limited Range ◽  
Capillary Waves ◽  
Bubble Collapse ◽  
Jet Formation ◽  
Cavity Depth ◽  
Jet Breakup ◽  
Jet Velocity

We present scaling laws for the jet velocity resulting from bubble collapse at a liquid surface which bring out the effects of gravity and viscosity. The present experiments conducted in the range of Bond numbers $0.004<Bo<2.5$ and Ohnesorge numbers $0.001<Oh<0.1$ were motivated by the discrepancy between previous experimental results and numerical simulations. We show here that the actual dependence of $We$ on $Bo$ is determined by the gravity dependency of the bubble immersion (cavity) depth which has no power-law variation. The power-law variation of the jet Weber number, $We\sim 1/\sqrt{Bo}$, suggested by Ghabache et al. (Phys. Fluids, vol. 26 (12), 2014, 121701) is only a good approximation in a limited range of $Bo$ values ($0.1<Bo<1$). Viscosity enters the jet velocity scaling in two ways: (i) through damping of precursor capillary waves which merge at the bubble base and weaken the pressure impulse, and (ii) through direct viscous damping of the jet formation and dynamics. These damping processes are expressed by a dependence of the jet velocity on Ohnesorge number from which critical values of $Oh$ are obtained for capillary wave damping, the onset of jet weakening, the absence of jetting and the absence of jet breakup into droplets.

Mechanism of high velocity jet formation after a gas bubble collapse near the micro fiber immersed in a liquid

2020 ◽  
Vol 163 ◽  
pp. 120420
Author(s):  
Roman V. Fursenko ◽  
Vladimir M. Chudnovskii ◽  
Sergey S. Minaev ◽  
Junnosuke Okajima
Keyword(s):  
High Velocity ◽  
Bubble Collapse ◽  
Gas Bubble ◽  
Jet Formation

On Cumulative Collapse of Cavitation Cavities

1968 ◽  
Vol 90 (1) ◽  
pp. 116-124 ◽  
Author(s):  
S. P. Kozirev
Keyword(s):  
Cavitation Bubble ◽  
Water Jet ◽  
Bubble Collapse ◽  
Liquid Jets ◽  
Jet Formation ◽  
Model Based ◽  
Jet Impact

Highly nonsymmetrical bubble collapses are viewed photographically, and it is noted that the collapses occur in such a fashion as to produce liquid jets. These are considered as similar to shaped charges used in explosives, and a model based on cumulative jet formation is postulated to explain the damaging power of such collapses. The damage from cavitation bubble collapse is examined and found to be similar to that from water jet impact.

The study of the process of evolution of the jet under outflow of water from the supercritical state through a thin nozzle

2016 ◽  
Vol 11 (1) ◽  
pp. 66-71 ◽  
Author(s):  
R.Kh. Bolotnova ◽  
V.A. Korobchinskaya
Keyword(s):  
Stationary Process ◽  
Supercritical State ◽  
System Of Differential Equations ◽  
Jet Formation ◽  
Cylindrical Coordinates ◽  
Initial Stage ◽  
Supersonic Regime ◽  
Water Outflow ◽  
Thin Nozzle ◽  
Supercritical Temperature

The dynamics of the water outflow from the initial supercritical state through a thin nozzle is studied. To describe the initial stage of non-stationary process outflow the system of differential equations of conservation of mass, momentum and energy in a two-dimensional cylindrical coordinates with axial symmetry is used. The spatial distribution of pressure and velocity of jet formation was received. It was established that a supersonic regime of outflow at supercritical temperature of 650 K is formed, which have a qualitative agreement for the velocity compared with the Bernoulli analytical solution and the experimental data.

Microwave Measurement of Magnetic Bubble Collapse and Stripout Field

1976 ◽  
Author(s):  
Millard G. Mier ◽  
Hilmer W. S. Swenson ◽  
P. E. Wigen
Keyword(s):  
Bubble Collapse ◽  
Microwave Measurement ◽  
Magnetic Bubble
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