Dynamics of a bubble in a liquid under laser pulse action
I. Sh. Akhatov, N. K. Vakhitova, A. S. Topol'nikov
Institute of Mechanics, Ufa Scientific Center, Russian Academy of Sciences, Ufa 450000
Abstract
Simulation was performed of the behavior
of a vapor bubble in a liquid under
laser irradiation in laboratory
experiments. A mathematical model was
developed to analyze the effect of heat
conduction, diffusion, and mass transfer
on the bubble dynamics under compression
and expansion. It is found that at the
stage of collapse, intense condensation
occurs on the bubble wall, which results
in a significant (more than 15-
fold)decrease in bubble mass and an
increase in pressure (to 105
atm)and temperature (to 104
K) Results of numerical calculations of
the radius of the first rebound and the
amplitude of the divergent shock wave in
water are compared with experimental
data. It is shown that small (about
1%)additives of an incondensable gas
lead to a considerable decrease in mass
transfer on the bubble wall.
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