NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Heat transfer in vertical Bridgman growth of oxides - Effects of conduction, convection, and internal radiationIn the present investigation of crystalline phase internal radiation and heat conduction during the vertical Bridgman growth of a YAG-like oxide crystal, where transport through the melt is dominated by convection and conduction, heat is also noted to be conducted through ampoule walls via natural convection and enclosure radiation. The results of a quasi-steady-state axisymmetric Galerkin FEM indicate that heat transfer through the system is powerfully affected by the optical absorption coefficient of the crystal. The coupling of internal radiation through the crystal with conduction through the ampoule walls promotes melt/crystal interface shapes that are highly reflected near the ampoule wall.
Document ID
19920066858
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Brandon, S.
(NASA Headquarters Washington, DC United States)
Derby, J. J.
(Minnesota, University Minneapolis, United States)
Date Acquired
August 15, 2013
Publication Date
July 1, 1992
Publication Information
Publication: Journal of Crystal Growth
Volume: 121
Issue: 3, Ju
ISSN: 0022-0248
Subject Category
Solid-State Physics
Accession Number
92A49482
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available