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Salt-finger convection under reduced gravitySalt-finger convection in a double-diffusive system is a motion driven by the release of gravitational potential due to differential diffusion rates. Because of the fact that the destabilizing effect of the concentration gradient is amplified by the Lewis number (the ratio of thermal diffusivity to solute diffusivity) salt-finger convection can be generated at very much reduced gravity levels. This effect may be of importance in the directional solidification of binary alloys carried out in space. The transport of solute and heat by salt-finger convection at microgravity conditions is considered; instability arising from surface tension gradients, the Marangoni instability, is discussed, and the possible consequences of combined salt-finger and Marangoni instability are considered.
Document ID
19900032638
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Chen, C. F.
(Arizona, University Tucson, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1990
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
AIAA PAPER 90-0122
Accession Number
90A19693
Funding Number(s)
CONTRACT_GRANT: NAG3-723
CONTRACT_GRANT: NSF MSM-87-02732
Distribution Limits
Public
Copyright
Other

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