Bridgman法晶体生长的瞬态数值模拟

1.中国科学院上海硅酸盐研究所,上海,200050

2.复旦大学数学系,上海,200443

3.中国科学院上海硅酸盐研究所,上海,200050

4.中国科学院上海硅酸盐研究所,上海,200050

基金项目: 国家自然科学基金(59732040)

Transient Numerical Simulation of Bridgman Method

采用变形有限元法对坩埚下降法晶体生长过程进行了瞬态数值模拟.对随下降距离生长位置、生长速度、界面位置处的法线方向温度梯度和凹度的变化进行了分析说明,将生长过程划分为三个阶段.结果表明在整个生长过程中,晶体生长条件一直处于变化之中,因而晶体的质量也在整块晶体中呈现一定的波动性.

[1]	Adornato Peter M;Brown Robert A .Convection and Segregation in Directional Solidification of Dilute and Non-dilute Binary Alloys:Effects of Ampoule and Furnace Design[J].Journal of Crystal Growth,1987,80:155.
[2]	Wouters P;Van Schaftingen J J;Crochet M J .Numerical Simulation of the Horizontal Bridgman Growth. Part III: Calculation of the Interface[J].International Journal for Numerical Methods in Fluids,1987,7:131.
[3]	CHANG C J;Brown R A;T-M. Shift.Finite Element Calculation of Buoyancy-driven Convection near a Melt/Solid Phase Boundary[A].Hemisphere, New York,1982
[4]	Gresho P M;Lee R L;Sani R L.On the Time-dependent Solution of the Incompressible Navier-Stokes Equation in Two and Three Dimensions[A].Pineridge Press,1980

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