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Instability of capillary jets with thermocapillarityLong axisymmetric liquid zones are subject to axial temperature gradients which induce steady viscous flows driven by thermocapillarity. The approximately parallel flow in a cylindrical zone is examined for linearized instabilities. Capillary, surface-wave and thermal modes are found. Capillary breakup can be retarded or even suppressed for small Prandtl number and large Biot number B, which measures heat transfer from the liquid to the surrounding atmosphere. In the limiting case B approaches infinity the zone becomes an isothermal jet subject to axial 'wind stress' on its interface. It is then possible to suppress capillary breakup entirely so that one can maintain long coherent jets.
Document ID
19860037253
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Xu, J.-J.
(Northwestern Univ. Evanston, IL, United States)
Davis, S. H.
(Northwestern University Evanston, IL, United States)
Date Acquired
August 12, 2013
Publication Date
December 1, 1985
Publication Information
Publication: Journal of Fluid Mechanics
Volume: 161
ISSN: 0022-1120
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
86A21991
Funding Number(s)
CONTRACT_GRANT: NAS8-33881
Distribution Limits
Public
Copyright
Other

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