[1]吴金星,王超,王明强,等.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(03):10-14.[doi:10.13705/j.issn.1671-6833.2016.06.018]
　Wu Jinxing,Wang Chao,Wang Mingqiang,et al.Numerical Simulation of Turbulent Fluid Flow and Heat Transfer in a Circular Tube with Twisted Tapes Inserts[J].Journal of Zhengzhou University (Engineering Science),2017,38(03):10-14.[doi:10.13705/j.issn.1671-6833.2016.06.018]
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内置扭带管内湍流流动与传热数值模拟()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
38卷
期数:
2017年03期
页码:
10-14
栏目:
出版日期:
2017-05-28

文章信息/Info

Title:
Numerical Simulation of Turbulent Fluid Flow and Heat Transfer in a Circular Tube with Twisted Tapes Inserts
作者:
吴金星; 王超; 王明强; 刘艳会; 李亚飞
郑州大学化工与能源学院,河南郑州,450001
Author(s):
Wu Jinxing; Wang Chao; Wang Mingqiang; Liu Yanhui; Li Yafei
College of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou, Henan 450001
关键词:
普通扭带; 格栅扭带; 三边扭带; 强化换热; 数值模拟
Keywords:
DOI:
10.13705/j.issn.1671-6833.2016.06.018
文献标志码:
A
摘要:
为了提高内置扭带管的综合性能,开发了一种三边扭带,并对空管、普通扭带管、格栅扭带管及三边扭带管内流体流动与传热特性进行了数值模拟.以水为工质,采用RNG k-ε湍流模型,扭带扭率y=2.0,取Re=5 000～30000,计算了扭带管内努赛尔数Nu、阻力系数f和综合性能评价因子η,与同工况下空管进行了对比.结果表明,相比于空管、普通扭带管和格栅扭带管,三边扭带管的综合性能较好,其η值比空管高出11.9％ ～33.2％.
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.
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