涡发生器矩形通道内流动换热性能

doi:10.7523/j.issn.2095-6134.2018.02.014

中国科学院大学学报 ›› 2018, Vol. 35 ›› Issue (2): 240-247.DOI: 10.7523/j.issn.2095-6134.2018.02.014

• 中国工程热物理学会2016年传热年会专栏 • 上一篇下一篇

涡发生器矩形通道内流动换热性能

唐凌虹¹, 曾敏²

1. 西安石油大学机械工程学院, 西安 710065;
2. 西安交通大学热流科学与工程教育部重点实验室, 西安 710049

收稿日期:2017-04-27 修回日期:2017-07-03 发布日期:2018-03-15
通讯作者: 唐凌虹
基金资助:
陕西省教育厅科研计划项目（16JK1600）、西安石油大学青年科技创新基金（2015BS36）和教育部"新世纪优秀人才支持计划"项目（NCET-13-0463）资助

Flow and heat transfer characteristics in a rectangular channel with vortex generators

TANG Linghong¹, ZENG Min²

1. School of Mechanical Engineering, Xi'an Shiyou University, Xi'an 710065, China;
2. Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, China

Received:2017-04-27 Revised:2017-07-03 Published:2018-03-15

摘要/Abstract

摘要： 对布置不同结构形式纵向涡发生器的矩形通道内的流动换热性能进行数值研究，并与光通道进行比较。结果表明，涡发生器可强化流体的换热性能。应用场协同理论，对矩形通道内纵向涡发生器强化传热机理进行分析。在相同Re下，全场体积平均协同角较小的矩形通道对应的对流换热系数较大。以JF因子为比较准则，对矩形通道内综合流动换热性能进行比较，发现CFU式三角形翼纵向涡发生器与椭圆支柱组合能够提供最好的综合流动换热性能。

关键词: 矩形通道, 纵向涡发生器, 流动换热, 场协同理论

Abstract: In this study, effects of longitudinal vortex generator configurations (Case A-F) on the heat transfer and flow friction characteristics in a rectangular channel are investigated using numerical method. The results show that longitudinal vortex generator enhances the heat transfer performance, compared with the smooth channel. The field synergy principle analyses indicate that the intersection angles between velocity and temperature gradient of all longitudinal vortex generator configurations are smaller than that of smooth channel, and the comparison results show that at the same Reynolds number the smaller synergy angle the larger the Nusselt number is completely consistent with the field synergy principle. Comparisons of the performance evaluation parameter, JF factor, indicate that Case F has the best overall heat transfer performance and that Case F brings about more enhancement of heat transfer at a modest expense of the additional pressure. Therefore, Case F is a suitable configuration for enhancing the overall heat transfer performance for channels.

Key words: rectangular channel, longitudinal vortex generator, flow and heat transfer, field synergy principle

中图分类号:

TK124

唐凌虹, 曾敏. 涡发生器矩形通道内流动换热性能[J]. 中国科学院大学学报, 2018, 35(2): 240-247.

TANG Linghong, ZENG Min. Flow and heat transfer characteristics in a rectangular channel with vortex generators[J]. , 2018, 35(2): 240-247.

参考文献

[1] Torri K, Kwak K M, Nishino K. Heat transfer enhancement accompanying pressure-loss reduction with winglet-type vortex generators for fin-tube heat exchangers[J]. International Journal of Heat and Mass Transfer, 2002, 45(18):3795-3801.
[2] 王令, 陈秋炀, 曾敏, 等. 矩形窄通道内带纵向涡发生器的传热强化[J]. 化工学报, 2006, 57(11):2549-2553.
[3] Wang Q W, Chen Q Y, Wang L. Experimental study of heat transfer enhancement in narrow rectangular channel with longitudinal vortex generators[J]. Nuclear Engineering and Design, 2007, 237(7):686-693.
[4] Chen C, Teng J T, Cheng C H, et al. A study on fluid flow and heat transfer in rectangular microchannels with various longitudinal vortex generators[J]. International Journal of Heat and Mass Transfer, 2014, 69:203-214.
[5] Ebrahimi A, Roohi E, Kheradmand S. Numerical study of liquid flow and heat transfer in rectangular microchannel with longitudinal vortex generators[J]. Applied Thermal Engineering, 2015, 78:576-583.
[6] 何雅玲, 楚攀, 谢涛. 纵向涡发生器在管翅式换热器中的应用及优化[J]. 化工学报, 2012, 63(3):746-760.
[7] Wu J M, Zhang H, Yan CH, et al. Experimental study on the performance of a novel fin-tube air heat exchanger with punched longitudinal vortex generator[J]. Energy Conversion and Management, 2012, 57(1):42-48.
[8] 张强, 王良璧. 通道内矩形涡对涡发生器强化换热的数值研究[J]. 兰州交通大学学报, 2014, 33(6):110-114.
[9] Tang L H, Tan S C, Gao P Z, et al. Parameters optimization of fin-and-tube heat exchanger with a novel vortex generator fin by Taguchi method[J]. Heat Transfer Engineering, 2016, 37(3/4):369-381.
[10] Tian L T, He Y L, Lei Y G, et al. Numerical study of fluid flow and heat transfer in a flat-plate channel with longitudinal vortex generators by applying field synergy principle analysis[J]. International Communications in Heat and Mass Transfer, 2009, 36:111-120.
[11] 唐凌虹, 谭思超, 高璞珍. 纵向涡发生器作用下矩形通道内流动换热性能研究[J]. 原子能科学技术, 2014, 48(5):812-817.
[12] 黄军. 纵向涡作用下窄间隙矩形通道内单相和沸腾流动换热特性机理研究[D]. 西安:西安交通大学, 2009.
[13] Bejan A. Convective heat transfer[M]. New York:John Wiley & Son Inc, 1995.
[14] Holman J P. Heat transfer[M]. New York:McGraw-Hill Higher Education, 2010:258.
[15] Guo Z Y, Li D Y, Wang B X. A novel concept for convective heat transfer enhancement[J]. International Journal of Heat and Mass Transfer, 1998, 41(14):2221-2225.
[16] Wu J M, Tao W Q. Numerical study on laminar convection heat transfer in a rectangular channel with longitudinal vortex generator. PART A:Verification of field synergy principle[J]. International Journal of Heat and Mass Transfer, 2008, 51(5/6):1179-1191.
[17] Yun J Y, Lee K S. Influence of design parameters on the heat transfer and flow friction characteristics of the heat transfer with slit fins[J]. International Journal of Heat and Mass Transfer, 2000, 43(14):2529-2539.

涡发生器矩形通道内流动换热性能

Flow and heat transfer characteristics in a rectangular channel with vortex generators

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 1

编辑推荐

Metrics

本文评价

访问统计

联系我们