郑州大学学报（工学版）2017，Vol.38Issue(3)：10-14,5.DOI:10.13705/j.issn.1671-6833.2016.06.018
内置扭带管内湍流流动与传热数值模拟
Numerical Simulation of Turbulent Fluid Flow and Heat Transfer in a Circular Tube with Twisted Tape Inserts
摘要
Abstract
In order to improve the comprehensive performance of convection in tubes inserted with twisted tapes,in the developed 3-edge twisted tape,a simulation was carried out to examine the comprehensive characteristics of single phase convection in circular tubes inserted with twisted tapes,including typical twisted tape,grid spiral twisted tape and 3-edge twisted tape.With water as the working fluid,the behavior of fluid flow and heat transfer of these different types of twisted tapes with the same twist ratio y =2.0 were studied.The RNG k-ε turbulence model was chosen for the Reynolds number ranging from 5 000 to 30 000.The nusselt number(Nu),friction factor(f) and comprehensive performance evaluation factor(η) were calculated and compared with those of a plain tube in the same condition.The results showed that the comprehensive performance of 3-edge twisted tape was better than plain tube,the tubes with typical twisted tape and grid spiral twisted tapes insert.关键词
普通扭带/格栅扭带/三边扭带/强化换热/数值模拟Key words
typical twisted tape/grid spiral twisted tape/3-edge twisted tape/enhanced heat transfer/numerical simulation分类
能源科技引用本文复制引用
吴金星,王超,王明强,刘艳会,李亚飞..内置扭带管内湍流流动与传热数值模拟[J].郑州大学学报（工学版）,2017,38(3):10-14,5.基金项目
河南省重点科技攻关计划项目(132102210406) （132102210406）
郑州市科技攻关计划项目(141PPTGG410) （141PPTGG410）
