微细多孔介质中对流换热研究  

EXPERIMENTAL AND NUMERICAL INVESTIGATIONS OF GAS FORCED CONVECTION HEAT TRANSFER THROUGH MICROPOROUS MEDIA

作　　者：黄寓理[1] 姜培学[1] 胥蕊娜[1] 

机构地区：[1]热科学与动力工程教育部重点实验室,清华大学热能工程系,北京100084

出　　处：《工程热物理学报》2011年第2期273-276,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金重点项目(No.50736003);973项目(No.2007CB210107)

摘　　要：本文对空气、氦气和二氧化碳流过微细多孔介质内部的对流换热进行了实验研究和数值模拟。实验段为烧结多孔介质,颗粒的平均直径为40～225μm,通过"单吹法"的实验方法进行瞬态实验,得到了多孔介质内部对流换热系数。数值模拟了气体流过微细多孔结构内部的对流换热的非稳态过程,得到多孔介质内部对流换热系数。数值结果与实验结果基本一致,并与已有结果基本吻合。The convection heat transfer of air, helium and carbon dioxide in microporous media with average particle diameters of 40 μm to 225 μm were studied both experimentally and numerically. The heat transfer coefficient in the micro-porous media is determined experimentally and numerically. The experimental results for the heat transfer coefficients fitted the known results and the numerical results matched the experimental results in large flow rate conditions.

关 键 词：微细多孔介质 实验研究 数值模拟 对流换热 

分 类 号：TK124[动力工程及工程热物理—工程热物理]