摘要
本文用数值模拟的方法研究了浮区中热毛细对流与溶质浓度毛细对流的耦合,分析了半导体晶体的浮区生长过程中杂质的影响.讨论了表面张力随浓度的增加而减少的典型情况.计算结果表明,在一定参数范围下,浓度Marangoni数对浮区中的流场和浓度场有明显的影响,对温度场的影响相对较小.
The axisymmetrie model is used to study numerically the coupling processes of the ther-mocapillary and the solutalcapillary convection in a floating zone. One typical situation that isthe surface tension decreaces with the concentration are considered. The results show that thesolutal Marangoni number has obvious influences on the stream function and the solute distri-bution but has relatively slight effect on the temperature distribution.
关键词
浮区
晶体生长
毛细对流
溶质
Flow of Fluids
Capillaries
Heat Transfer
Convection
Mass Transfer
Mathematical Techniques
Numerical Analysis
