基于场协同原理的横排锯齿翅片湍流传热强化机理

李娟; 凌祥; 彭浩

doi:10.13224/j.cnki.jasp.2015.10.011

基于场协同原理的横排锯齿翅片湍流传热强化机理

doi: 10.13224/j.cnki.jasp.2015.10.011

李娟^1,2,
凌祥¹,
彭浩¹

1. 南京工业大学机械与动力工程学院, 南京 211816;
2. 南京林业大学机械电子工程学院, 南京 210037

基金项目:

江苏省普通高校研究生科研创新计划项目(CXZZ12_0419)

国家自然科学基金(51506098)

江苏省过程强化与新能源装备技术重点实验室(南京工业大学)开放课题

江苏省高校自然科学基金(15KJB470007)

南京林业大学科研启动项目

国家科技支撑计划(2012BAA07B02)

详细信息

作者简介:
李娟(1987-),女,湖北洪湖人,讲师,博士,主要从事高效传热研究.

中图分类号: V231.1
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- 文章访问数: 1216
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- 被引次数: 0
出版历程
- 收稿日期: 2014-03-23
- 刊出日期: 2015-10-28

Heat transfer enhancement mechanism of transverse direction type serrated fin in turbulent flow based on field synergy principle

1. School of Mechanical and Power Engineering, Nanjing University of Technology, Nanjing 211816, China;
2. School of Mechanical and Electronic Engineering, Nanjing Forestry University, Nanjing 210037, China

摘要

摘要: 通过数值模拟方法分析了横排(TD)锯齿翅片在板翅换热器通道内传热与流动特性.研究了湍流条件下横排锯齿翅片的温度场,速度场以及两场协同性,探索其强化传热机理.在此基础上获得了翅片高度,翅片间距和翅片宽度对传热与流动的影响规律,并给出了横排锯齿翅片的综合传热性能因子.结果表明:横排锯齿翅片通道内流体扰动强烈,形成了周期性纵向涡流;改善了通道内速度与温度梯度场之间的协同作用,强化传热效果,提高了综合传热性能因子.
- 横排锯齿翅片 /
- 场协同 /
- 传热强化 /
- 湍流 /
- 纵向涡流
Abstract: The heat transfer and flow characteristics of TD (transverse direction) type serrated fin in plate-fin heat exchanger were studied numerically. To explore the heat transfer enhancement mechanism of TD type serrated fin, three dimensional numerical model was established to examine the temperature gradient field, velocity field and fields synergy in turbulence flow. Furthermore the effect of fin height, fin space and fin width on the heat transfer and flow characteristics were analyzed respectively. The integrated heat transfer performance factor were calculated. Results show that: the temperature field and velocity distribution was uniformperiodic longitudinal vortex was formed because of the fin strong disturbancethe synergy of velocity field and temperature gradient was improved owing to vortex enhancing the heat transfer efficiency and improving integrated heat transfer performance factor.
- transverse direction type serrated fin /
- field synergy /
- heat transfer enhancement /
- turbulence flow /
- longitudinal vortex

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参考文献(18)

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