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摘要:
Numerical simulations were carried out to analyze the effects of various magnetic fields on the transport of momentum and heat in Czochralski growth process. The stationary vertical and cusp magnetic fields were applied in this study. The governing equations were numerically solved using a finite volume method with SIMPLE (semi-implicit method for pressure linked equations) method to couple the velocity and pressure. A low-Reynolds number k-Ε model was used for the description of the turbulent processes. The transport characteristics under the vertical and cusp magnetic fields were compared. Vertical magnetic field has dual effects on the transport of momentum, heat. Numerical results show that very large vertical magnetic field is harm to the quality of crystal rod; with the increase of the strength of cusp magnetic field, the melt flow at the meridional plane, turbulent intensities, heat transfer are reduced gradually.
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来源 :
Journal of Synthetic Crystals
ISSN: 1000-985X
年份: 2008
期: 5
卷: 37
页码: 1073-1078,1087
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