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Drop coalescence studiesThe objective of this experimental study is to understand the detailed mechanics of the coalescence of liquid drops. The experiments are being conducted in an immiscible acoustic levitator with degassed water as the host medium. Typically, a quasineutrally buoyant drop of silicon oil mixed with bromobenzene is levitated close to the velocity node of the levitator. A second drop of the same liquid is introduced, and as it slowly seeks levitation position, the drops coalesce. Coalescence is delayed until the host film between drops is completely drained. Following coalescence, the excess surface energy in the coalesced drop is dissipated through shape oscillations. The final events of film rupture followed by drop coalescence are rapid and are photographically studied with high-speed video (1000 fps). The laser-induced fluorescence technique is used to visualize the dynamics of host film drainage. The details of the coalescence mechanics are presented.
Document ID
19910012062
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Anikumar, A. V.
(Vanderbilt Univ. Nashville, TN, United States)
Wang, T. G.
(Vanderbilt Univ. Nashville, TN, United States)
Date Acquired
September 6, 2013
Publication Date
May 1, 1990
Publication Information
Publication: JPL, Proceedings of the First Workshop on Containerless Experimentation in Microgravity
Subject Category
Materials Processing
Accession Number
91N21375
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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