Abstract
A new theoretical method for calculating view factors has been devised and a global heat transfer model for Czochralski (CZ) crystal growth developed. Good agreement was obtained between the model and experimental results for heater power when both radius and pull rate were constant. The model (1) includes global radiative heat exchange based on diffuse-gray radiation, (2) satisfactorily treats the moving curvature of the crystal-melt interface by applying the Stefan condition and the method of boundary-fitted coordinates, and (3) permits rapid calculation of the view factors.
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