Since the performance of the diabasic alloy-Hg1-xCdxTe Crystal is very sensitive to its composition as well as the component distribution, Bridyman method is usually used for the crystal growth. The flotation-driven convection in the melt has an important role in the heat and mass transport to solid-liquid interface. In order to know quantitatively the effect of the convection on crystal uniformity, it is necessary to effectively and precisely make a numerical analysis for all kinds of field variables of th...