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Non-spherical collapse of an air bubble subjected to a lithotripter pulse

Johnsen, Eric and Colonius, Tim and Kreider, Wayne and Bailey, Michael R. (2008) Non-spherical collapse of an air bubble subjected to a lithotripter pulse. In: Biomedical and biotechnology engineering. Vol.2. American Society of Mechanical Engineers , New York, NY, pp. 285-294. ISBN 978-0-7918-4296-6.

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In order to better understand the contribution of bubble collapse to stone comminution in shockwave lithotripsy, the shockinduced and Rayleigh collapse of a spherical air bubble is investigated using numerical simulations, and the free-field collapse of a cavitation bubble is studied experimentally. In shock-induced collapse near a wall, it is found that the presence of the bubble greatly amplifies the pressure recorded at the stone surface; the functional dependence of the wall pressure on the initial standoff distance and the amplitude are presented. In Rayleigh collapse near a solid surface, the proximity of the wall retards the flow and leads to a more prominent jet. Experiments show that re-entrant jets form in the collapse of cavitation bubbles excited by lithotripter shockwaves in a fashion comparable to previous studies of collapse near a solid surface.

Item Type:Book Section
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URLURL TypeDescription
Colonius, Tim0000-0003-0326-3909
Additional Information:© 2007 American Society of Mechanical Engineers. This work was supported by NIH Grant POl DK043881 and ONR Grant NOOO 14-06-1-0730.
Funding AgencyGrant Number
NIHPOl DK043881
Office of Naval Research (ONR)N00014-06-1-0730
Record Number:CaltechAUTHORS:20100810-092143228
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Official Citation:Non-Spherical Collapse of an Air Bubble Subjected to a Lithotripter Pulse Eric Johnsen, Tim Colonius, Wayne Kreider, and Michael R. Bailey, ASME Conf. Proc. 2007, 285 (2007), DOI:10.1115/IMECE2007-43156
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:19364
Deposited By: Tony Diaz
Deposited On:10 Aug 2010 20:37
Last Modified:03 Oct 2019 01:55

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