Oscillations of a sessile droplet in open air

Journal Article · Fri Nov 15 00:00:00 EST 2013 · Physics of Fluids (1994)

DOI:https://doi.org/10.1063/1.4829025· OSTI ID:22257203

Beskachko, V. P. ^[1]

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1. General and Theoretical Physics Department, National Research South Ural State University, 76 Lenin Avenue, 454080 Chelyabinsk (Russian Federation)

The open system consisting of a sessile drop, a neutral gas, and a substrate is analyzed by numerical methods. The mode with constant contact angle is considered. The model takes into account evaporation from drop surface, free and forced convection in gas, buoyancy, and Marangoni effect in the liquid phase. It was established that every considered mechanical and thermodynamical disturbance of the system leads to the drop surface oscillations, and thus a drop in an open air oscillates almost inevitably. The displacement of the liquid-gas interface due to oscillations is analyzed in terms of its impact on the accuracy of measurement of the surface tension by sessile drop method.

• OSTI ID: 22257203
• Journal Information: Physics of Fluids (1994), Vol. 25, Issue 11; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-6631
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCURACY
DROPLETS
EVAPORATION
FORCED CONVECTION
LIQUIDS
OSCILLATIONS
SUBSTRATES
SURFACE TENSION