[1]吴锦京,曹侃,魏新利..螺旋槽管管内传热与流动性能的数值模拟研究[J].郑州大学学报(工学版),2013,34(02):32-36.[doi:10.3969/j. issn.1671 -6833.2013.00.009]
　WU Jin-jing,CAO Kan,WEI Xin-li.Numerical Simulation on Heat Transfer and Flow Resistance Characteristics of Spirally Fluted Tubes[J].Journal of Zhengzhou University (Engineering Science),2013,34(02):32-36.[doi:10.3969/j. issn.1671 -6833.2013.00.009]
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螺旋槽管管内传热与流动性能的数值模拟研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
34
期数:
2013年02期
页码:
32-36
栏目:
出版日期:
2013-03-28

文章信息/Info

Title:
Numerical Simulation on Heat Transfer and Flow Resistance Characteristics of Spirally Fluted Tubes
作者:
吴锦京; 曹侃; 魏新利.
丽水学院理学院,浙江丽水,323000, 河南省过程传热与节能重点实验室,河南郑州,450002, 郑州大学化工与能源学院,河南郑州,450001
Author(s):
WU Jin-jing1; CAO Kan2; WEI Xin-li3
1.School of Sciences,Lishui University , Lishui 323000,China; 2.Key Laboratory of Process Heat Transfer and Energy Savingof Henan Province, Zhengzhou 450002，China; 3.School of Chemical Engineering and Enery , Zhengzhou University , Zheng-zhou 450001 ,China
关键词:
数值模拟;  螺旋槽管;  强化传热;  场协同原理
Keywords:
numerical simulation;  spirally fluted tube;  heat transfer enhancement; field synergy principle
分类号:
TK124
DOI:
10.3969/j. issn.1671 -6833.2013.00.009
文献标志码:
A
摘要:
采用数值模拟方法对以空气为介质的7根螺旋槽管的传热及流阻性能进行了计算,并与圆形光滑管进行了比较.分析了螺旋槽管强化传热机理,发现其场协同程度得到改善是其传热得到强化的主要原因.同时还分析了管内Re数、槽深e、节距p以及滚球半径r对螺旋槽管换热与流阻性能的影响,结果表明:在相同流量下,节距一定时,槽深越深,换热效果越好,同时阻力也越大；槽深一定时,节距越小,流体边界层分离作用越明显,管内换热越强,流动阻力也随之增大；滚球半径对传热影响比较小,但是对流动阻力的影响却比较大.
Abstract:
A comparative numerical investigation was carried out for heat transfer and flow resistance charac-teristics of smooth tube and 7 spirally fluted tubes with various structural parameters.This paper pointed outthat the improvement of the synergy of velocity and temperature fields enhanced the heat transfer of spirallyfluted tubes. The main influence factors of heat transfer and flow characteristics of spirally fluted tubes were al-so analyzed in the paper,such as Reynolds number,fluted depth,pitch and bowls radius. The results showthat at the same flow rate and pitch,with the increase of fluted depth,heat transfer improves gradually,andthe flow resistance also increases. And then at the same flow rate and fluted depth,with the smaller pitch ,themore obvious separation of the fluid boundary layer,which leads to the improvement of heat transfer and theincrease of flow resistance. Bowls radius has a little influence on heat transfer, but it has a great impact onflow resistance.

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