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Evaporation-induced flow around a droplet in different gases
S Radhakrishnan, , S Bakshi
Published in American Institute of Physics Inc.
2019
Volume: 31
   
Issue: 9
Abstract
It is known from recent studies that evaporation induces flow around a droplet at atmospheric conditions. This flow is visible even for slowly evaporating liquids like water. In the present study, we investigate the influence of the ambient gas on the evaporating droplet. We observe from the experiments that the rate of evaporation at atmospheric temperature and pressure decreases in a heavier ambient gas. The evaporation-induced flow in these gases for different liquids is measured using particle image velocimetry and found to be very different from each other. However, the width of the disturbed zone around the droplet is seen to be independent of the evaporating liquid and the size of the needle (for the range of needle diameters studied) and only depends on the ambient gas used. © 2019 Author(s).
About the journal
JournalPhysics of Fluids
PublisherAmerican Institute of Physics Inc.
ISSN10706631
Open AccessNo