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Prikladnaya Mekhanika i Tekhnicheskaya Fizika, 2005, Volume 46, Issue 5, Pages 93–99
(Mi pmtf2305)
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This article is cited in 3 scientific papers (total in 3 papers)
Thermocapillary vortices induced by a light beam near a bubble surface in a Hele–Shaw cell
N. Ivanova, B. Bezuglyi Tyumen’ State University, Tyumen’, 625003, Russia
Abstract:
This paper studies thermocapillary vortices induced by local heating of a bubble surface in a Hele–Shaw cell by a light beam. It is found that the vortex rotation frequency and its depth depend on the distance from the light-beam projection onto the layer to the bubble boundary. The surface velocity of the thermocapillary flow is calculated using the balance of the near-surface and return flows of the thermocapillary vortex and the equality of capillary and dynamic pressures. It is shown that a decrease in the surface velocity and the vortex rotation frequency with increase in the distance from the light beam to the bubble surface is due to a decrease in the temperature gradient between the illuminated and cold poles of the bubble.
Keywords:
bubble, thermocapillary flows, additivity of surface curvature, thermocapillary vortices, microfluidics.
Received: 12.07.2004 Accepted: 24.01.2005
Citation:
N. Ivanova, B. Bezuglyi, “Thermocapillary vortices induced by a light beam near a bubble surface in a Hele–Shaw cell”, Prikl. Mekh. Tekh. Fiz., 46:5 (2005), 93–99; J. Appl. Mech. Tech. Phys., 46:5 (2005), 691–696
Linking options:
https://www.mathnet.ru/eng/pmtf2305 https://www.mathnet.ru/eng/pmtf/v46/i5/p93
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