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Proceedings Paper

Gas<->Liquid Transport By Acoustic Levitation Of Single Drops In A Horizontal Wind Tunnel
Author(s): Mark Seaver
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Paper Abstract

We have built what we believe is the first instrument which acoustically levitates liquid drops surrounded by a continuously flowing gas stream. Drops 0.2 to 2.0mm in diameter have been levitated for periods of time up to hours in the working section of a horizontal wind tunnel. Air speeds of 25-300 cm/sec, corresponding to Reynolds numbers from 3 to 250, do not blow the drop out of the trap. Evaporation data from neat liquids indicate that the sound field has negligible effect on drop evaporation. We have observed phase separation in the evaporation of two partially miscible liquids. We have also seen evaporation stopped by the formation of a surface monolayer. Laser fluorescence from room temperature solutions is being investigated as a means of monitoring the transport of trace species between the gas and liquid phases.

Paper Details

Date Published: 8 April 1988
PDF: 4 pages
Proc. SPIE 0874, Nonlinear Optical Beam Manipulation, Beam Combining, and Atmospheric Propagation, (8 April 1988); doi: 10.1117/12.943873
Show Author Affiliations
Mark Seaver, Naval Research Lab (United States)

Published in SPIE Proceedings Vol. 0874:
Nonlinear Optical Beam Manipulation, Beam Combining, and Atmospheric Propagation
Robert A. Fisher, Editor(s)

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