相变微胶囊功能流体融化状态的数值模拟  

NUMERICAL SIMULATION OF MELTING PROCESS OF MICROENCAPSULATED PHASE CHANGE MATERIAL FUNCTIONALLY FLUID

作　　者：吴嘉峰[1] 郝英立[1] 施明恒[1] 

机构地区：[1]东南大学能源与环境学院,南京210096

出　　处：《工程热物理学报》2007年第5期829-831,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.50676020);教育部留学回国人员科研启动基金(No.6803001005);东南大学科学基金(No.9203007013;No9203001337)

摘　　要：本文用双流体模型模拟相变微胶囊(MCPCM)功能流体在大通道层流流动中的融化状态。MCPCM功能流体的入口条件和边界条件类型是影响MCPCM在管道中沿程融化率和融化速率的两个重要的决定因素。本文给出了恒壁温和恒热流两类边界条件下,不同入口条件时,MCPCM截面平均融化率和融化速率沿管道方向的变化趋势。提出了利用MCPCM的融化率与温度场的关系,通过管道截面的平均温度和截面温度场估算MCPCM截面平均融化率的思路。The melting process of the microencapsulated phase-change material （MCPCM） slurry in laminar flow through a heated tube was numerically simulated by using the Euler-Euler model. The inlet condition and the type of boundary condition are both important factors to influence the melted ratio and the melting rate of MCPCM along the tube. The trends of the average melted ratio and melting rate on the cross section along the tube are presented for the different inlet temperatures under the conditions of constant wall temperature and constant wall heat flux. A method is proposed to evaluate the average section melting rate of MCPCM through the average section temperature and section temperature field.

关 键 词：相变微胶囊 融化状态 温度场 蓄热 

分 类 号：TK124[动力工程及工程热物理—工程热物理]