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20 June 1989 Study Of The Cavitation Induced By A High Power Laser Beam
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Proceedings Volume 1031, 7th Intl Symp on Gas Flow and Chemical Lasers; (1989)
Event: 7th International Symposium on Gas Flow and Chemical Lasers, 1988, Vienna, Austria
This paper is concerned with a basic study of the cavitation induced by a high intensity laser beam. The present work is dealt in a first approach with the model of the initially only one spherical bubble, then followed by exploring the collective effects between several bubbles. The experimental setups producing one or several cavitation bubbles in the liquid (water) are at once described. The experimental apparatus (shadowgraph or Schlieren type) used to visualize bubbles and shock waves at high speed are also presented. Bubbles dynamics in infinite medium and near a solid wall are showed on sequential photographs (framing and streak). Oscillations, shock waves radiated upon collapse and jets developped towards the wall are also displayed. The comparison between experimental dynamics and numerical calculations prove that the evolution of optical cavitation bubbles is in good agreement with classical laws. This study of cavitation is extended to interacting effects when four bubbles are induced independently and simultaneously. The achieved visualizations show such interesting results as strong asymmetries, deformations, attraction or repulsion and premature collapses.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
P. Testud-Giovanneschi, P. Alloncle, D. Dufresne, Ph. Bournot, and M. Autric "Study Of The Cavitation Induced By A High Power Laser Beam", Proc. SPIE 1031, 7th Intl Symp on Gas Flow and Chemical Lasers, (20 June 1989);

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