平直翅片管式换热器的传热数值模拟研究  

Numerical Simulation of Heat Transfer on Flat Fin Tube Heat Exchangers

作　　者：朱必佳 孙宇[1] ZHU Bi-Jia;SUN Yu(College of Mechanical Engineering, Nan jing University of Science ＆ Technology, Jiangsu Nan jing 210094, China)

机构地区：[1]南京理工大学机械工程学院,江苏南京210094

出　　处：《机械设计与制造》2018年第A01期99-102,共4页Machinery Design & Manufacture

基　　金：江苏省产学研合作-前瞻性联合研究项目(BY2015004-06)

摘　　要：以平直翅片管式换热器为研究对象,采用计算流体力学(CFD)方法进行建模和模拟计算,通过对正交试验结果进行极差和方差的分析,综合考虑了翅片厚度、翅片间距、管横向间距和管纵向间距对努赛尔数Nu和阻力系数的影响程度和显著水平,并结合综合性能评价指标进行分析,结果显示:翅片厚度、翅片间距和管横向间距对换热器的传热性能影响显著,管纵向间距对换热器的传热性能无显著影响。当翅片厚度为2mm,翅片间距为9mm,管横向间距为65mm,纵向间距为115mm时传热性能最佳。Flat fin tube heat exchangers were studied by Computational Fluid Dynamics（CFD）. The different parameters influence and significance level of fin thickness, fin pitch, transverse and longitudinal spacing of pipe on the Nusselt number and resistance coefficient were studied through the results of range analysis and variance analysis. Heat transfer performance were also analyzed by comprehensive evaluation. The results show that the influences of fin thickness, fin pitch and transverse spacing of pipe are very remarkable and that the longitudinal spacing of the tubes has no significant influence on the heat transfer performance. The products will get the best heat transfer performance while fin thickness is 2mm, fin pitch is 9mm, transverse spacing of pipe is 65mm, longitudinal spacing of pipe is 115mm.

关 键 词：换热器 传热性能 正交实验 数值模拟 FLUENT 

分 类 号：TH16[机械工程—机械制造及自动化] TK172[动力工程及工程热物理—热能工程]