摘要
基于制冷剂在两相流动区处于热力不平衡状态的观点,建立了两相流动区的数学模型,根据该模型计算出压力、温度、气体和液体的流速分布.结果表明:制冷剂液体和气体的速度差会沿着毛细管的长度方向逐渐增大;制冷剂质量流量随着入口压力和过冷度的增加而增加.
The refrigerant flow in a capillary was divided into subcooled liquid region, metastable liquid region and two-phase flow region. In the two-phase flow region, liquid and vapor refrigerant are in non-equilibrium state. A two-fluid model was established to simulate the refrigerant flow in the two-phase flow region. The distributions of pressure, temperature, velocities of vapor and liquid were obtained with this model. The results show that the velocity difference of liquid and vapor increases along the capillary in the two-phase flow region and the mass flow rate increases with the rise of the inlet pressure and sub-cooled degree.
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
2003年第1期53-55,共3页
Journal of Xi'an Jiaotong University
基金
国家自然科学基金资助项目(50076036)
教育部留学归国人员科研启动基金资助项目.
