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Thermocapillary flow and melt/solid interfaces in floating-zone crystal growth under microgravityComputer simulation of steady-state axisymmetrical heat transfer and fluid flow was conducted to study thermocapillary flow and melt/solid interfaces in floating-zone crystal growth under microgravity. The effects of key variables on the extent of thermocapillary flow in the melt zone, the shapes of melt/solid interfaces and the length of the melt zone were discussed. These variables are: (1) the temperature coefficient of surface tension (or the Marangoni number), (2) the pulling speed (or the Peclet number), (3) the feed rod radius, (4) the ambient temperature distribution, (5) the heat transfer coefficient (or the Biot number), and (6) the thermal diffusivity of the material (or the Prandtl number).
Document ID
19910037526
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Lan, C. W.
(Wisconsin Univ. Madison, WI, United States)
Kou, Sindo
(Wisconsin, University Madison, United States)
Date Acquired
August 15, 2013
Publication Date
June 1, 1990
Publication Information
Publication: Journal of Crystal Growth
Volume: 102
Issue: 4 Ju
ISSN: 0022-0248
Subject Category
Materials Processing
Accession Number
91A22149
Funding Number(s)
CONTRACT_GRANT: NAG8-705
Distribution Limits
Public
Copyright
Other

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