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Title: Oscillations of a sessile droplet in open air

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.
Authors:
 [1] ;  [2]
  1. Optics and Spectroscopy Department, National Research South Ural State University, 76 Lenin Avenue, 454080 Chelyabinsk (Russian Federation)
  2. General and Theoretical Physics Department, National Research South Ural State University, 76 Lenin Avenue, 454080 Chelyabinsk (Russian Federation)
Publication Date:
OSTI Identifier:
22257203
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Fluids (1994); Journal Volume: 25; Journal Issue: 11; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACCURACY; DROPLETS; EVAPORATION; FORCED CONVECTION; LIQUIDS; OSCILLATIONS; SUBSTRATES; SURFACE TENSION