多孔介质换热元件的流动特性研究  

STUDY ON FLOW CHARACTERISTICS OF HEAT EXCHANGE ELEMENT WITH POROUS MEDIA

作　　者：卢苇[1] 马晓茜[1] 

机构地区：[1]华南理工大学

出　　处：《钢铁》2001年第6期57-58,12,共3页Iron and Steel

摘　　要：对几种非均匀孔隙的多孔介质换热元件进行了冷态实验 ,得到流动阻力与流速的经验关系式。基于冷态实验 ,建立多孔介质系统的能量平衡模型 ,通过数值模拟 ,得到系统内部压力曲线 ;将冷态实验的结果推广到了非等温系统 ,并讨论了流量、温度场、组成多孔介质物质的形状。Cold state experiment on several heat exchange element with porous media non uniform was performed The experimental correlation between pressure drop and velocity were obtained Based on the cold state experiment,the energy balance model of porous media system has been established By numerical stimulation,the curves of pressure distribution in these systems are obtained The results of cold state experiment have been introduced into non isothermal system The effect of flow rate,temperature field,shape of material for porous system and flow thoroughfare length on pressure drop are discussed

关 键 词：蓄热式换热器 冷态实验 数值计算 流动阻力 换热元件 多孔介质 

分 类 号：TK172[动力工程及工程热物理—热能工程]