【摘要】 建立了具有液封熔体的热毛细对流的物理模型和数学模型,采用原始变量法对微重力条件下具有液封的熔　体内热毛细对流进行了数值模拟,得到了上、下层液柱主流区的温度场和流场,证实了液封能够削弱熔体内热毛细　对流,从而提高了浮区晶体生长质量,并得到液封的厚度和液封与熔体的动力粘性系数之比对熔体内热毛细对流的　影响规律。更多还原

【Abstract】 This paper establishes the physical and mathematical model of thermocapillary convection in molten liquid with liquid encapsulation. Numerical simulation of thermocapillary convection in molten liquid with liquid encapsulation is performed by finite volume method. The distributions of temperature and velocity in liquid layers is then obtained.It is verified that liquid encapsulation can reduce thermocapillary convection in molten liquid and raise the quality of crystal growth. The effects of thickness of liquid encapsulation and of kinetic viscosity on thermocapillary convection in molten liquid are analyzed.更多还原