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The migration of fluid droplets and their interactions in a thermal gradientWhen materials are processed in free fall, buoyant forces will be substantially reduced. Thus, the buoyant migration of droplets and bubbles which normally occurs on earth is expected to be overshadowed by migration due to other mechanisms in space processing. In particular, capillary forces on droplets due to the variation of interfacial tension around their periphery will play a significant role in governing their motion in space. While such interfacial tension gradients can be caused by thermal, compositional, and/or electrical gradients in the continuous phase, thermal gradients are convenient to use in controlled experimentation. On earth, due to interference from buoyant effects, it is difficult to study thermocapillary migration in sufficient detail. Also, the effects of a thermal gradient on the interactions among droplets are hard to study on Earth. Thus, an orbital facility for conducting experiments on the migration and interactions of fluid droplets in a continuous phase due to the action of a thermal gradient appears attractive.
Document ID
19820024188
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Subramanian, R. S. (Clarkson Coll. of Technology Potsdam, NY, United States)
Wilcox, W. R. (Clarkson Coll. of Technology Potsdam, NY, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1979
Publication Information
Publication: Alabama Univ. UAH(NASA Workshop on Fluids Expt. System
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
82N32064
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19820024182Collected WorksUAH/NASA Workshop on Fluids Experiment System
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