中北大学学报（自然科学版）2016，Vol.37Issue(5)：470-475,486,7.DOI:10.3969/j.issn.1673-3193.2016.05.007
几种环形翅片管通道内流体流动与换热特性的对比研究
Comparative Study on Fluid Flow and Heat Transfer Performance in the Channel of Annular Finned Tube
摘要
Abstract
The three dimensional numerical simulation of circular finned tube and 5 kinds of elliptical fin tube is performed with the steady state RNGκ-εmodel by the Fluent software.The base pipes of the cir-cular finned tube and five elliptical finned tubes are same.Fluid field and local Nusselt number on fin surface are analyzed and compared for different Reynolds numbers (Re)to obtain fluid flow and heat transfer characteristics in the channel of annular finned tube,and the result of comprehensive heat trans-fer coefficient (Nu/f)on a circular finned tube and 5 elliptical finned tubes is also provided.The results show that the Nu of circular fin is biggest among elliptical fin Afin ,elliptical fin De ,elliptical fin Per and elliptical finβ,but it is smaller than elliptical fin Amin .The flow resistance coefficient of circular fin is biggest among elliptical fin Afin ,elliptical fin Per and elliptical finβ,but it is smaller than elliptical fin Amin .The results of Thermal Resistance is contrary to Nusselts.The difference of flow resistance coeffi-cient between elliptical fin De,and the circular fin is small when the Reynolds is smaller (Re≤8 000), while flow resistance coefficient of elliptical fin De is basically same with circular fin when the Reynolds is larger (Re>8 000).The combined heat transfer effect of elliptical fin Amin is the best.关键词
环形翅片/翅片换热/流动阻力Key words
annular fin/fin heat transfer/flow resistance分类
能源科技引用本文复制引用
欧龙姣,阴继翔,武广剑,杨宇伟,阴勇光..几种环形翅片管通道内流体流动与换热特性的对比研究[J].中北大学学报（自然科学版）,2016,37(5):470-475,486,7.基金项目
国家自然科学基金资助项目(51476108) （51476108）
山西省自然科学基金资助项目(2012001024-4) （2012001024-4）
