Robert Mettin: abstract Phys. Fluids ALTMVL01

Collapse and rebound of a laser-induced cavitation bubble

I. Akhatov(*), O. Lindau, A. Topolnikov(*), R. Mettin, N. Vakhitova(*), and W. Lauterborn

(*) Institute of Mechanics,
Ufa Branch of the Russian Academy of Sciences,
Karl Marx Str. 6, Ufa 450000, Russia

Drittes Physikalisches Institut, Universität Göttingen,
Bürgerstraße 42-44, D-37073 Göttingen, Germany


Abstract

A strong laser pulse that is focused into a liquid produces a vapour cavity, which first expands and then collapses with subsequent rebounds. In this paper a mathematical model of the spherically symmetric motion of a laser-induced bubble is proposed. It describes gas and liquid dynamics including compressibility, heat and mass transfer effects and nonequilibrium processes of evaporation and condensation on the bubble wall. It accounts also for the occurrence of supercritical conditions at collapse. Numerical investigations of the collapse and first rebound have been carried out for different bubble sizes. The results show a fairly good agreement with experimental measurements of the bubble radius evolution and the intensity of the outgoing shock wave emitted at collapse. Calculations with a small amount of noncondensable gas inside the bubble show its strong influence on the dynamics.


Phys. Fluids 13, 2805-2819 (2001).


pdf-file (403 kB)
gzip compressed ps-file (190 kB)

A shorter version, presented at
CAV 2001: Fourth International Symposium on Cavitation,
California Institute of Technology, Pasadena, CA USA. June 20-23, 2001.

(http://resolver.library.caltech.edu/cav2001:sessionA5.004)
gzip compressed ps-file (105 kB)
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