竖直纵向翅片管自然对流传热特性及优化  

NATURAL CONVECTION HEAT TRANSFER PERFORMANCE AND OPTIMIZATION OF LONGITUDINAL FINNED TUBE IN VERTICAL

作　　者：邱燕[1] 田茂诚[1] 牛蔚然[1] 程林[1] 

机构地区：[1]山东大学能源与动力工程学院,山东济南250061

出　　处：《工程热物理学报》2008年第9期1537-1540,共4页Journal of Engineering Thermophysics

基　　金：国家重点基础研究发展规划资助项目(No.2007CB206900);新世纪优秀人才支持计划(No.NCET-05-0583)

摘　　要：首先利用数值计算的方法对自然对流条件下竖直放置的纵向翅片管的传热特性进行研究,得到了基管恒壁温下基管高度、翅片长度、翅片夹角及其交互作用分别对散热量和单位质量散热量的影响次序,并获得了计算范围内的竖直纵向翅片管的最优结构。在数值计算的基础上,又对竖直纵向翅片管在闭式小室内在基管近似恒壁温条件下进行试验研究。对比试验和数值计算得到的竖直纵向翅片管散热量和单位质量散热量,平均偏差为3.3%。数值计算采用的具体方法可靠,获得的结论可信。Natural convection heat transfer performance of longitudinal finned tube in vertical was studied by numerical simulations.Based on parent tube with constant temperature,the influence order upon heat dissipating capacity and heat dissipating capacity per unit mass of parent tube height,fin length,fin included angle and their interactions were got separately,optimum structure parameters of longitudinal finned tube in vertical ranged computational cases were also obtained.Under the condition of parent tube wit...

关 键 词：纵向翅片管 自然对流 优化 

分 类 号：TK124[动力工程及工程热物理—工程热物理]