单面加热矩形通道热入口段层流对流换热特性的场协同分析  

FIELD COORDINATION ANALYSIS OF CONVECTIVE HEAT TRANSFER IN THERMAL ENTRANCE REGION IN RECTANGULAR DUCTS WITH ONE SIDE HEATED

作　　者：王军荣[1] 闵敬春[1] 宋耀祖[1] 

机构地区：[1]清华大学工程力学系,传热强化与过程节能教育部重点实验室,北京100084

出　　处：《工程热物理学报》2004年第3期478-480,共3页Journal of Engineering Thermophysics

基　　金：国家高技术研究发展计划(863计划项目 No.2002AA744042);高等学校博士学科点专项科研基金

摘　　要：对单面加热矩形通道热入口段的层流对流换热问题进行了数值模拟研究,给出了不同截面比的局部努赛尔数。推导出单面加热时的场协同方程,以此分析了不同截面比下加热边界条件对努赛尔数的影响规律。A numerical study is conducted for laminar flow heat transfer in rectangular ducts in the thermal entrance region with one side heated and three sides adiabatic. The local Nusselt numbers are obtained and compared for different aspect ratios. Field coordination equations are derived for the one side heated thermal boundary condition. Effects of thermal boundary condition and aspect ratio on Nusselt number are discussed and analyzed from the view of field coordination.

关 键 词：矩形通道 对流换热 层流入口段 场协同 

分 类 号：TK124[动力工程及工程热物理—工程热物理]