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Temperature Prediction for Interface Shape in the Space Crystal Furnace TITUS
Author(s) -
Ebert W.,
Meffert B.,
Weller W.
Publication year - 1999
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/(sici)1521-4079(199904)34:4<433::aid-crat433>3.0.co;2-u
Subject(s) - crystal (programming language) , representation (politics) , thermal conduction , interface (matter) , finite element method , space (punctuation) , materials science , temperature gradient , radiation , state space representation , mechanics , mechanical engineering , computer science , thermodynamics , physics , engineering , optics , composite material , algorithm , meteorology , capillary number , capillary action , politics , political science , law , programming language , operating system
A temperature prediction scheme for the Bridgman crystal furnace TITUS is proposed. The temperature prediction is done by a reduced order dynamic representation with a state space description of the plant. Using the finite element method, the conduction and radiation effects in the crystal furnace are modeled. It is shown by a numeric simulation that the proposed prediction techniques can considerably improve the temperature constance and dynamic gradient on the crystal surface.