化学工程2012，Vol.40Issue(10)：25-28,39,5.DOI:10.3969/j.issn.1005-9954.2012.10.007
板翅式换热器平直翅片表面流动及传热特性
Fluid flow and heat transfer characteristics in plain fins of plate-fin heat exchanger
摘要
Abstract
In order to improve the performance of plate-fin heat exchanger, a three-dimensional numerical investigation of fluid flow and heat transfer characteristics in plain fins of plate-fin heat exchanger was performed using CFD software. The effect of configuration and average inlet Re number on the characteristics in plain fins was studied. The results show that the temperature of fluid adjacent to the wall is higher while that of central fluid is lower when fluid is heated. There is obvious temperature gradient in the fluid. It is higher near the wall while lower in the central fluid. The values of j- factor and f-factor all increase with the height and spacing of plain fins. With the increase in fin thickness, the heat transfer performance of plain fins is intensified to some extent while there is an optimum value. The numerical results are in good accordance with the reported experimental values. The results provide the theoretical basis for the optimum design of plate-fin heat exchangers.关键词
板翅式换热器/平直翅片/表面性能/数值模拟Key words
plate-fin heat exchanger/ plain fin/ surface performance/ numerical simulation分类
能源科技引用本文复制引用
文键,李亚梅,王斯民,厉彦忠,吴晨龙..板翅式换热器平直翅片表面流动及传热特性[J].化学工程,2012,40(10):25-28,39,5.基金项目
国家自然科学基金资助项目(51106119) （51106119）
教育部博士点基金(20110201120052) （20110201120052）
教育部留学回国基金(09回国基金08) （09回国基金08）
中央高校基本科研业务费专项基金资助项目 （）
