摘要
为了了解环形双层液体内热毛细对流的基本特征,利用有限容积法进行了数值模拟,液池外壁被加热,内壁被冷却,液封流体为氧化硼,熔体为砷化镓,其宽深比为4。模拟结果表明,液封能极大地抑制熔体内流动,使其速度降低约两个数量级;浮力会削弱液封层内的流动,强化熔体内流动.
In order to understand the characteristics of the thermocapillary convection in the annular two-layer systems, a set of numerical simulations were carried out using the finite-volume method for the system of gallium arsenide （GaAs） and boron oxide （B2O3） with the aspect ratio 4, in a differentially heated annular pool with the outer heated cylinder and the inner cooled cylinder. The results show that liquid encapsulation can effectively suppress thermocapillary convection in the melt. When the buoyancy is considered, thermocapillary convection is reduced in the liquid encapsulation, but enhanced in the melt.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2008年第10期1759-1761,共3页
Journal of Engineering Thermophysics
基金
国家自然科学基金(No.50776102)
关键词
热毛细对流
数值模拟
双层流体
thermocapillary convection
numerical simulation
two-layer flow
