单相流体在多孔介质中的流动和换热研究  

Resarch on the Flow and Con vection Heat Transfer of Mono Phase Fluids in Porous Media

作　　者：司广树[1] 姜培学[2] 李勐[2] 

机构地区：[1]承德石油高等专科学校热工系，河北 承德 067000[2]清华大学热能工程系，北京 100084

出　　处：《承德石油高等专科学校学报》2000年第4期4-9,共6页Journal of Chengde Petroleum College

摘　　要：本文介绍了单相流体在多孔介质内部的传热和流动过程及其研究方法 ,给出单相流体大多孔介质内部传热的数理模型 ,对模型的有效性进行了验证。同时分析了流速、孔隙率、固体颗粒的直径大小及固体骨架和流体的导热系数之比等因素对多孔介质内部传热和流动的影响 。The mechanism and the research methods of convection heat transfer and flow for mono phase fluids in porous me dia are introduced.The mathematic models of flow and convection heat transfer ar e given and tested experimentally.The ef fects of several factors on heat transfe r and/or flow,such as flow rate,porosity ,the diameter and the conductivity of so lid spherical beads,are analyzed.The met hods that can increase heat transfer wit hout causing flow resistant to be increa sed too much are suggested,too.

关 键 词：单相流体 多孔介质 流动阻力 换热过程 热弥散 粘性耗散 数学模型 

分 类 号：TK124[动力工程及工程热物理—工程热物理]