LASER CAVITATION IN A TUBE IMMERSED IN A CONFINED VOLUME FILLED WITH LIQUID

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Resumo

The expansion and collapse of a cavitation bubble during laser heating and boiling of water underheated to saturation temperature in the vicinity of the tip of an optical fiber (laser heating element) installed in a glass tube filled with water and immersed in a limited volume filled with liquid are studied. It is established that the outgoing and incoming flows of heated liquid in the tube, arising from the growth and collapse of cavitation vapor bubble, lead to intense horizontal liquid flows in the gap between the bottom of the cuvette and the bottom end of the tube. It is shown that at the initial moments of accelerated growth and, especially, at the moment of vapor bubble collapse near the bottom of the cuvette under the bottom end of the tube there are powerful pressure pulses that can effectively affect the surface of the bottom of the cuvette, while at bubble collapse liquid flows are directed in the opposite direction into the tube. The discovered effects can be used for effective selective surface cleaning.

Sobre autores

M. Guzev

Institute of Applied Mathematics Far Eastern Branch of the Russian Academy of Sciences

Academician of the RAS Vladivostok, Russia

Y. Vassilevski

G. I. Marchuk Institute of Computational Mathematics of the Russian Academy of Sciences

Corresponding Member of the RAS Moscow, Russia

E. Dats

Institute of Applied Mathematics Far Eastern Branch of the Russian Academy of Sciences

Email: datsep@gmail.com
Vladivostok, Russia

I. Abushkin

Institute of Applied Mathematics Far Eastern Branch of the Russian Academy of Sciences

Vladivostok, Russia

E. Khaydukov

National Research Center “Kurchatov Institute” of the Russian Academy of Sciences

Moscow, Russia

V. Chudnovskii

Institute of Applied Mathematics Far Eastern Branch of the Russian Academy of Sciences

Vladivostok, Russia

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