DocumentCode :
2792193
Title :
Numerical simulation of electromagnetic stirring in purification of polysilicon
Author :
Cui, Guolei ; Xu, Xiangyang ; Shi, Jinfeng
Author_Institution :
Sch. of Autom., Beijing Inst. of Technol., Beijing, China
fYear :
2011
fDate :
15-17 July 2011
Firstpage :
468
Lastpage :
471
Abstract :
In the purification process of solar grade silicon with metallurgical technology, the stirring device play a crucial role. Electromagnetic stirring (EMS), due to not bringing into extraneous components, and achieving the control of variety of stirring methods and intensity, is seen as an ideal stirring method. The author established macro-transport physical coupled mathematical model in the process of electromagnetic stirring of silicon firstly; And then the author solved this model coupled the electromagnetic field and flow field by using the finite element and finite difference methods, and investigated the relationship between electromagnetic stirring parameters and electromagnetic field and flow field. The results show that, the electromagnetic field rotating horizontally in the melt is well distributed. Magnetic flux density decreased gradually from edge to the center because of skin effect. The distribution of velocity field in the melt is similar to electromagnetic force distribution. Current intensity and frequency have a greatly impact on the electromagnetic field and velocity field distribution.
Keywords :
electromagnetic fields; electromagnetic forces; finite difference methods; finite element analysis; magnetic flux; metallurgy; purification; silicon; skin effect; current intensity; electromagnetic field; electromagnetic force distribution; electromagnetic stirring; finite difference method; finite element method; flow field; macrotransport physical coupled mathematical model; magnetic flux density; metallurgical technology; numerical simulation; polysilicon; purification process; skin effect; solar grade silicon; stirring device; velocity field distribution; Current density; Electromagnetic fields; Magnetic flux density; Mathematical model; Purification; Silicon; electromagnetic field; electromagnetic stirring; flow field; numerical simulation; purification of polysilicon;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Mechanic Automation and Control Engineering (MACE), 2011 Second International Conference on
Conference_Location :
Hohhot
Print_ISBN :
978-1-4244-9436-1
Type :
conf
DOI :
10.1109/MACE.2011.5986961
Filename :
5986961
Link To Document :
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