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首页> 外文会议>HTD-vol.375-3; American Society of Mechanical Engineers(ASME) International Mechanical Engineering Congress and Exposition vol.3; 20041113-19; Anaheim,CA(US) >A NUMERICAL STUDY OF EFFECT OF LIQUID ENCAPSULATION ON THERMOCAPILLARY CONVECTION IN LIQUID BRIDGE
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A NUMERICAL STUDY OF EFFECT OF LIQUID ENCAPSULATION ON THERMOCAPILLARY CONVECTION IN LIQUID BRIDGE

机译：液体包封对液桥热毛细管对流影响的数值研究

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摘要

The physical and mathematical models of the thermocapillary convection in liquid bridge with liquid encapsulation are established in the present paper. A numerical simulation of the thermocapillary convection in liquid bridge with liquid encapsulation is performed by employed vorticity-stream function method and the Alternative Direction Implicit scheme in finite difference. The distribution of temperature and flow in liquid columns is then obtained. It is verified that liquid encapsulation can reduce the thermocapillary convection in liquid bridge and can improve the quality of crystal growth in float zone. The influence law of the thickness of liquid encapsulation on the thermocapillary convection in liquid bridge is obtained, the more thickness of liquid encapsulation decreases, the more the thermocapillary convection in the inner liquid and the outer liquid diminishes. It is found that the flow profile of two liquid columns is much more complex than that of single liquid column.
机译：建立了具有液体封装的液桥热毛细管对流的物理和数学模型。采用涡流函数方法和交替方向隐式有限差分法，对液体包裹的液桥中的热毛细对流进行了数值模拟。然后获得液柱中温度和流量的分布。证实了液体包封可以减少液桥中的热毛细管对流，并可以改善浮区中晶体的生长质量。得出了液体包封厚度对液桥中热毛细管对流的影响规律，液体包封厚度减小得越多，内部液体和外部液体中的热毛细管对流越少。发现两个液柱的流动曲线比单个液柱的流动曲线复杂得多。

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