113 Effects of Noncondensable Gas on the Spherical Bubble Collapse with Phase Transition

2012 ◽  
Vol 2012.87 (0) ◽  
pp. _1-38_
Author(s):  
Shohei ITATANI ◽  
Yoshinori JINBO ◽  
Hiroyuki TAKAHIRA
Keyword(s):  
Phase Transition ◽  
Bubble Collapse ◽  
Spherical Bubble ◽  
Noncondensable Gas

Influence of Physical Parameters on the Collapse of a Spherical Bubble

2020 ◽  
Author(s):  
Bohua Sun
Keyword(s):  
Surface Tension ◽  
Physical Parameter ◽  
Pressure Difference ◽  
Bubble Formation ◽  
Bubble Collapse ◽  
Physical Parameters ◽  
Liquid Environment ◽  
Spherical Bubble ◽  
Maple Code ◽  
Surrounding Liquid

This paper examines the influence of physical parameters on the collapse dynamics of a spherical bubble filled with diatomic gas ($\kappa=7/5$). The present numerical investigation shows that each physical parameter affects the bubble collapse dynamics differently. After comparing the contribution of each physical parameter, it appears that, of all the parameters, the surrounding liquid environment affects the bubble collapse dynamics the most. Meanwhile, surface tension has the weakest influence and can be ignored in the bubble collapse dynamics. However, surface tension must be retained in the initial analysis since this, as well as the pressure difference jointly control initial bubble formation. As an essential part of this study, a general Maple code is provided.

Dynamics of expansion and collapse of explosive two-dimensional bubbles

2018 ◽  
Vol 859 ◽  
pp. 677-690
Author(s):  
Jérôme Duplat
Keyword(s):  
Water Vapour ◽  
Liquid Water ◽  
Indirect Measurement ◽  
Hot Water ◽  
Bubble Collapse ◽  
Gas Mixture ◽  
Two Dimensional ◽  
Initial Radius ◽  
Spherical Bubble ◽  
Spherical Bubbles

An explosive gas mixture of hydrogen and oxygen is introduced in liquid water between two horizontal walls, forming a flat cylindrical bubble. Ignition and explosion of the bubble lead to a large depressurized cavity that finally implodes. We investigate the dynamics of the bubble collapse, which is qualitatively similar to the collapse of a spherical bubble. It exhibits a slightly weaker singularity than for spherical bubbles. We also analyse the explosion process. Starting with an initial radius $R_{0}$, the bubble reaches a maximal radius $R_{max}$ that depends on the gap thickness $h$ between the two walls: for a thinner gap, the condensation of water vapour is more efficient, the overpressure consecutive to the combustion is weaker, and its duration is shorter. This leads to a smaller maximal radius $R_{max}$. An indirect measurement of the transport coefficient of hot water vapour can be inferred from this observation.

On study of non-spherical bubble collapse near a rigid boundary

2019 ◽  
Vol 32 (3) ◽  
pp. 523-535 ◽  
Author(s):  
Xiao-jian Ma ◽  
Xin Zhao ◽  
Biao Huang ◽  
Xiao-ying Fu ◽  
Guo-yu Wang
Keyword(s):  
Bubble Collapse ◽  
Rigid Boundary ◽  
Spherical Bubble
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