Collapse of multiple gas bubbles by a shock wave and induced impulsive pressure

1984 ◽  
Vol 56 (1) ◽  
pp. 125-131 ◽  
Author(s):  
Yukio Tomita ◽  
Akira Shima ◽  
Takashi Ohno
Keyword(s):  
Shock Wave ◽  
Gas Bubbles ◽  
Impulsive Pressure

415 A Basic Study on the Shock Wave Phenomena in Liquid Containing Gas Bubbles

2005 ◽  
Vol 2005 (0) ◽  
pp. 57
Author(s):  
Yoichi TANIGUCHI ◽  
Hiromu SUGIYAMA ◽  
Kazuhide MIZOBATA ◽  
Ryojiro MINATO
Keyword(s):  
Shock Wave ◽  
Gas Bubbles ◽  
Basic Study ◽  
Wave Phenomena

212 Shock Wave Phenomena in Bubbly Liquids and Collapse of Gas Bubbles

2006 ◽  
Vol 2006.45 (0) ◽  
pp. 63-64
Author(s):  
Toho KANNO ◽  
Hiromu SUGIYAMA ◽  
Kazuhide MIZOBATA ◽  
Ryojiro MINATO ◽  
Yoichi TANIGUCHI
Keyword(s):  
Shock Wave ◽  
Gas Bubbles ◽  
Bubbly Liquids ◽  
Wave Phenomena

Fragmentation of acoustically levitating droplets by laser-induced cavitation bubbles

2016 ◽  
Vol 805 ◽  
pp. 551-576 ◽  
Author(s):  
Silvestre Roberto Gonzalez Avila ◽  
Claus-Dieter Ohl
Keyword(s):  
Shock Wave ◽  
Experimental Study ◽  
Surface Tension ◽  
Cavitation Bubble ◽  
High Speed ◽  
Size Range ◽  
Sound Field ◽  
Negative Pressures ◽  
Impulsive Pressure ◽  
Small Bubbles

We report on an experimental study on the dynamics and fragmentation of water droplets levitated in a sound field exposed to a single laser-induced cavitation bubble. The nucleation of the cavitation bubble leads to a shock wave travelling inside the droplet and reflected from pressure release surfaces. Experiments and simulations study the location of the high negative pressures inside the droplet which result into secondary cavitation. Later, three distinct fragmentation scenarios are observed: rapid atomization, sheet formation and coarse fragmentation. Rapid atomization occurs when the expanding bubble, still at high pressure, ruptures the liquid film separating the bubble from the surrounding air and a shock wave is launched into the surrounding air. Sheet formation occurs due to the momentum transfer of the expanding bubble; for sufficiently small bubbles, the sheet retracts because of surface tension, while larger bubbles may cause the fragmentation of the sheet. Coarse fragmentation is observed after the first collapse of the bubble, where high-speed jets emanate from the surface of the droplet. They are the result of surface instability of the droplet combined with the impulsive pressure generated during collapse. A parameter plot for droplets in the size range between 0.17 and 1.5 mm and laser energies between 0.2 and 4.0 mJ allows the separation of these three regimes.

Calculation of shock wave propagation in water containing reactive gas bubbles

2017 ◽  
Vol 11 (2) ◽  
pp. 261-271 ◽  
Author(s):  
K. A. Avdeev ◽  
V. S. Aksenov ◽  
A. A. Borisov ◽  
D. G. Sevastopoleva ◽  
R. R. Tukhvatullina ◽  
...  
Keyword(s):  
Shock Wave ◽  
Wave Propagation ◽  
Gas Bubbles ◽  
Shock Wave Propagation ◽  
Reactive Gas

Shock wave propagation and bubble collapse in liquids containing gas bubbles

Shock Waves ◽  
2005 ◽  
pp. 1085-1090 ◽  
Author(s):  
H. Sugiyama ◽  
K. Ohtani ◽  
K. Mizobata ◽  
H. Ogasawara
Keyword(s):  
Shock Wave ◽  
Wave Propagation ◽  
Gas Bubbles ◽  
Shock Wave Propagation ◽  
Bubble Collapse

A Study of Shock Wave Propagation Phenomena in Liquids Containing Gas Bubbles

2003 ◽  
Vol 2003.43 (0) ◽  
pp. 56-57
Author(s):  
Hisatoshi OGASAWARA ◽  
Hiromu SUGIYAMA ◽  
Kazuhide MIZOBATA ◽  
Kiyonobu OHTANI ◽  
Akihiko YAMASHITA
Keyword(s):  
Shock Wave ◽  
Wave Propagation ◽  
Gas Bubbles ◽  
Shock Wave Propagation

Use of Thomas Algorithm for Shock Wave Analysis in Bubbly Flow

2012 ◽  
Author(s):  
Mark A. Chaiko
Keyword(s):  
Shock Wave ◽  
Diffusion Equation ◽  
Fluid Model ◽  
Bubbly Flow ◽  
Bubble Radius ◽  
Gas Bubbles ◽  
Uniform Continuity ◽  
Second Order ◽  
Two Phase ◽  
Thomas Algorithm

A numerical approach is developed for simulation of pressure wave propagation in a tube containing a dilute concentration of small gas bubbles. The two-phase fluid is considered homogeneous and spatial distribution of bubbles is assumed to be uniform. Bubble oscillations are modeled using the Keller equation which accounts for liquid compressibility. Heat transfer between liquid and gas is included in the analysis through solution of the radial conduction equation for a spherical gas bubble with moving interface. An energy balance over the bubble surface determines bubble internal pressure, which is assumed to be uniform. Continuity and momentum relations for the homogenous mixture along with the Keller equation are used to derive an alternate set of equations, which are more amenable to application of elementary numerical methods. These alternate equations include a diffusion equation, which is linear in the homogeneous mixture pressure. Two additional equations define the bubble radius and gas-liquid interface speed in terms of the local spatial variation in the homogeneous pressure field. The diffusion equation is solved easily using the second-order accurate Crank-Nicolson method in conjunction with the Thomas algorithm for the discretized tridiagonal algebraic system. The remaining equations comprising the fluid model are solved with an explicit, second-order accurate predictor-corrector scheme. The present approach avoids the need for staggered grids and iterative pressure correction methods used in previous work. Numerical calculations are carried out for a shock wave in a liquid column containing gas bubbles. Results show good agreement with experimental data available in the literature.

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