Experimental Investigation of Thermocapillary Convection Near an Evaporating Meniscus
Keyword(s):
Experimental visualizations of the 3D convection patterns generated near an evaporating meniscus in a capillary tube are presented. Epi-fluorescent micro-particle image velocimetry (μPIV) using a two-cavity frequency doubled ND-YAG laser as the illumination source is employed to map the small-scale spatial flow fields near the meniscus. Methanol seeded with 0.5 μm polystyrene fluorescent particles is used as the experimental fluid. These fluorescent particles absorb light from the laser beam (λabs~542 nm, green) and emit a longer wavelength light ((λem~612 nm, red). Images obtained at a specified time delay (~20 ms) were interrogated to obtain vector flow fields.
2005 ◽
Vol 19
(2)
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pp. 716-727
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2013 ◽
Vol 15
(1)
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pp. 127-135
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2004 ◽
Vol 126
(5)
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pp. 585-593
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Keyword(s):