Evaluation of temperature gradient in advanced automated directional solidification furnace (AADSF) by numerical simulation

Andris V. Bune; Donald C. Gillies; Sandor L. Lehoczky

doi:10.1117/12.244329

12 July 1996 Evaluation of temperature gradient in advanced automated directional solidification furnace (AADSF) by numerical simulation

Andris V. Bune, Donald C. Gillies, Sandor L. Lehoczky

Author Affiliations +

Proceedings Volume 2809, Space Processing of Materials; (1996) https://doi.org/10.1117/12.244329
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

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).

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Andris V. Bune, Donald C. Gillies, and Sandor L. Lehoczky "Evaluation of temperature gradient in advanced automated directional solidification furnace (AADSF) by numerical simulation", Proc. SPIE 2809, Space Processing of Materials, (12 July 1996); https://doi.org/10.1117/12.244329

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