采用有限差分法对CdZnTe分离结晶过程中熔体内热毛细对流作了三维数值模拟,讨论了浮力和轴向磁场对熔体热毛细对流的影响规律.结果表明:熔体内热毛细对流以上下两个流动方向相反的流胞存在,并随着Marangoni数(Ma)的加大,流动增强;在Ma数较小时,浮力加强熔体内热毛细对流,而当Ma数较大时,浮力却抑制熔体内热毛细对流;辅向磁场能很好的抑制熔体热毛细对流,并随着Hartmann数(Ha)的增大,抑制作用加强.
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