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High temperature furnace modeling and performance verificationsA two dimensional conduction/radiation problem for an alumina crucible in a zirconia heater/muffle tube enclosing a liquid iron sample was solved numerically. Variations in the crucible wall thickness were numerically examined. The results showed that the temperature profiles within the liquid iron sample were significantly affected by the crucible wall thicknesses. New zirconia heating elements are under development that will permit continued experimental investigations of the zirconia furnace. These elements have been designed to work with the existing furnace and have been shown to have longer lifetimes than commercially available zirconia heating elements. The first element has been constructed and tested successfully.
Document ID
19910006719
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Smith, James E., Jr. (Alabama Univ. Huntsville, AL, United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1991
Subject Category
Research And Support Facilities (Air)
Report/Patent Number
NAS 1.26:187831
NASA-CR-187831
Accession Number
91N16032
Funding Number(s)
CONTRACT_GRANT: NAG8-708
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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