Numerical study of melt flow under the influence of heater-generating magnetic field during directional solidification of silicon ingots

被引：16

作者：

Li, Zaoyang ^{[1
,2
]}

Qi, Xiaofang ^{[1
]}

Liu, Lijun ^{[1
]}

Zhou, Genshu ^{[2
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Energy & Power Engn, Xian 710049, Shaanxi, Peoples R China

[2] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Shaanxi, Peoples R China

来源：

JOURNAL OF CRYSTAL GROWTH | 2018年 / 484卷

基金：

中国国家自然科学基金;

关键词：

Computer simulation; Fluid flows; Magnetic fields; Directional solidification; Silicon; INTERFACE SHAPE; CASTING PROCESS; CRYSTAL-GROWTH; CONVECTION; SCALE;

D O I：

10.1016/j.jcrysgro.2017.12.033

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The alternating current (AC) in the resistance heater for generating heating power can induce a magnetic field in the silicon melt during directional solidification (DS) of silicon ingots. We numerically study the influence of such a heater-generating magnetic field on the silicon melt flow and temperature distribution in an industrial DS process. 3D simulations are carried out to calculate the Lorentz force distribution as well as the melt flow and heat transfer in the entire DS furnace. The pattern and intensity of silicon melt flow as well as the temperature distribution are compared for cases with and without Lorentz force. The results show that the Lorentz force induced by the heater-generating magnetic field is mainly distributed near the top and side surfaces of the silicon melt. The melt flow and temperature distribution, especially those in the upper part of the silicon region, can be influenced significantly by the magnetic field. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：78 / 85

页数：8

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