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Proceedings Paper

Evaluation of temperature gradient in advanced automated directional solidification furnace (AADSF) by numerical simulation
Author(s): Andris V. Bune; Donald C. Gillies; Sandor L. Lehoczky
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Paper Abstract

A numerical model of heat transfer using combined conduction, radiation and convection in AADSF was used to evaluate temperature gradients in the vicinity of the crystal/melt interface for variety of hot and cold zone set point temperatures specifically for the growth of mercury cadmium telluride. Reverse usage of hot and cold zones was simulated to aid the choice of proper orientation of crystal/melt interface regarding residual acceleration vector without actual change of furnace location on board the orbiter. It appears that an additional booster heater will be extremely helpful to ensure desired temperature gradient when hot and cold zones are reversed. Further efforts are required to investigate advantages/disadvantages of symmetrical furnace design (i.e., with similar length of hot and cold zones).

Paper Details

Date Published: 12 July 1996
PDF: 9 pages
Proc. SPIE 2809, Space Processing of Materials, (12 July 1996); doi: 10.1117/12.244329
Show Author Affiliations
Andris V. Bune, NASA Marshall Space Flight Ctr. (United States)
Donald C. Gillies, NASA Marshall Space Flight Ctr. (United States)
Sandor L. Lehoczky, NASA Marshall Space Flight Ctr. (United States)

Published in SPIE Proceedings Vol. 2809:
Space Processing of Materials
Narayanan Ramachandran, Editor(s)

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