Title :
Influence radiation-convection heat transfer on temperature fields in crystals in a Czochralski method
Author :
Berdnikov, V.S. ; Mitin, K.A. ; Mitina, A.V.
Abstract :
The conjugated heat transfer in regimes of a thermogravitational convection of gas and radiation-convection heat exchange in system <;<;a crystal - environment - walls of the growth chambers>>, geometrically similar upper part of a thermal knot in a Czochralski method is numerically investigated. Calculations are fulfilled in a range of Grashof numbers from 1000 to 16000 at Prandtl number Pr = 0,68. Researches are spent by a finite element method. Calculation of radiation fluxes was made by a zonal method. The relative role of thermal conductivity, a convective heat transfer and a radiation heat exchange is investigated.
Keywords :
convection; crystal growth from melt; finite element analysis; heat radiation; thermal conductivity; Czochralski method; Grashof numbers; Prandtl number; conjugated heat transfer; convective heat transfer; finite element method; gas thermogravitational convection regimes; growth chamber walls; radiation flux calculation; radiation-convection heat exchange; radiation-convection heat transfer; temperature fields; thermal conductivity; thermal knot; zonal method; Conductivity; Crystals; Finite element analysis; Heat transfer;
Conference_Titel :
Actual Problems of Electronics Instrument Engineering (APEIE), 2012 11th International Conference on
Conference_Location :
Novosibirsk
Print_ISBN :
978-1-4673-2842-5
DOI :
10.1109/APEIE.2012.6628931
