|本期目录/Table of Contents|

[1]徐建民,雷斌,李智勇,等.内置分段式弹簧换热管内流场的数值模拟[J].武汉工程大学学报,2014,(03):58-62.[doi:103969/jissn16742869201403012]
　XU Jian min,LEI Bin,LI Zhi yong,et al.Numerical simulation of flow field sectional spring inserted in heat exchange tube[J].Journal of Wuhan Institute of Technology,2014,(03):58-62.[doi:103969/jissn16742869201403012]
点击复制

内置分段式弹簧换热管内流场的数值模拟(/HTML)
分享到：

《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2014年03期
页码:
58-62
栏目:
机电与信息工程
出版日期:
2014-03-31

文章信息/Info

Title:
Numerical simulation of flow field sectional spring inserted in heat exchange tube
文章编号:
16742869(2014)03005805
作者:
徐建民; 雷斌; 李智勇; 黄伟; 陈聪
武汉工程大学机电工程学院，湖北 武汉 430205
Author(s):
XU Jianmin; LEI Bin; LI Zhiyong; HUANG Wei; CHEN Cong
School of Mechanical & Electrical Engineering,Wuhan Institute of Technology,Wuhan 430205,China
关键词:
分段式弹簧; 强化传热; 数值模拟
Keywords:
sectional spring; enhanced heat transfer; numerical simulation
分类号:
TQ051.501
DOI:
103969/jissn16742869201403012
文献标志码:
A
摘要:
针对内置弹簧换热管在强化传热过程中产生较大阻力的问题，提出了一种插入分段式弹簧的方法，并通过Fluent软件对内置不同长度的弹簧换热管某一截面处的流动特性进行数值模拟，分别取每段弹簧的长度分别为50 mm、100 mm、150 mm、200 mm，得到了在内置不同长度弹簧的换热管内某一截面处的速度场；然后分别取不同丝径和圈径的分段式弹簧，对换热管内某一截面的流体径向速度场进行数值模拟，研究弹簧的丝径与圈径对强化传热的影响.结果表明：在换热管两端插入分段式弹簧使得管内流体径向速度提高了2~3倍，加快了管内壁区域流体的流动，使得边界层变薄，不仅加强了边界层流体的扰动，而且一定程度上降低了流体流动的阻力，从而提高了换热效率.在雷诺数相同时，内置分段式弹簧换热管相对于光管Nu数提高了2~4倍；随着丝径和圈径的增大，强化传热效率得到提高而流动阻力随着相应增加.
Abstract:
To investigate the problem of the resistance increasing in the process of enhancing heat transfer,a method based on inserting the sectional spring was put forward. The flow characteristics of a crosssection were simulated using FLUENT software. The velocity fields within a crosssection of the inserted sectional springs with different length of the heat exchange tubes were obtained after the length of each sectional spring was set as 50 mm,100 mm,150 mm,200 mm. By taking different wire diameter and circle diameter of the sectional springs,the radial velocity of fluid field within the heat exchange tube was simulated. The results show that inserting the sectional springs into both ends of heat exchange tube increases the radial velocity of the fluid 23 times,accelerates the fluid flow in the inner wall region,makes the boundary layer thinner,which not only strengthens the perturbation of boundary layer,but also reduces the flow resistance to some extent,thus improving heat transfer efficiency. Under the conditions of the same Reynolds number,the Nusselt number in the heat exchange tube of inserted sectional spring is higher 24 times than that in the plain tube. With the increase of wire diameter and circle diameter,heat transfer efficiency is improved and the flow resistance is increased.

参考文献/References:

［1］徐建民，彭坤，胡小霞,等.内置螺旋弹簧换热管内流动与传热三维数值模拟［J］.化工进展,2012,31(12):26522655.XU Jianmin,PENG Kun,HU Xiaoxia，et al.3D numerical simulation of fluid flow and heat transfer in heat exchange tube with helical coil inserts［J］. Chemical Industry And Engineering Progress,2012,31(12):26522655. (in Chinese)［2］李丽霞.插入扰流元件换热器换热特性数值模拟研究［D］.西安：西安科技大学，2009.LI Lixia.Numerical simulation of the heat transfer performance in heat exchanger inserted by disturbance device［D］.Xian: Xian University of Science and Technology,2009. (in Chinese)［3］李行.内置组合式扭带换热管内流动与传热的数值模拟［D］.长沙:长沙理工大学,2011.LI Xing.Numerical simulation of flow and heat transfer in heat exchanger tubes with modular twisted tape［D］.Changsha:Changsha University of Science&Technology,2011. (in Chinese)［4］彭威，阎华，关昌峰，等. 内置组合转子换热管的综合传热性能［J］.化工进展,2012,31(4)：749753.PENG Wei,YAN Hua,GUAN Changfeng，et al.Experimental study on the heat transfer enhancement of tubes with rotor assembly inserts［J］. Chemical Industry and Engineering Progress,2012,31(4):749753.(in Chinese)［5］刑程,孟继安,李志信.内插弹簧转子的管内换热及转子旋转特性［J］.工程热物理学报,2010,31(12):21052108.XING Cheng,MENG Jian，LI Zhixin.Heat transfer and rotating features of inserted spring rotors［J］.Journal of Engineering Thermophysics,2010,31(12):21052108. (in Chinese)［6］徐建民，胡小霞，彭坤,等.内插自振弹簧换热管脉冲流强化换热数值分析［J］.武汉工程大学学报，2012,34（9）：6669.XU Jianmin,HU Xiaoxia,PENG Kun，et al. Numerical analysis of interpolation vibration spring heat exchange tubes under pulse flow［J］. Journal of Wuhan Institute Technology,2012,34(9):6669. (in Chinese)

相似文献/References:

[1]汪威,喻九阳*,杨侠.波节管脉冲流强化对流换热数值分析[J].武汉工程大学学报,2010,(03):89.
　WANG Wei,YU Jiu yang,Yang Xia.Numerical analysis on convection heat transferin a corrugated tube[J].Journal of Wuhan Institute of Technology,2010,(03):89.
[2]杨文灏,喻九阳*,吴艳阳,等.螺旋槽管脉冲流强化对流换热数值及场协同分析[J].武汉工程大学学报,2011,(09):46.
　YANG Wenhao,YU Jiuyang,WU Yanyang,et al.Numerical analysis on convection heat transfer inspirally fluted and field synergy analysis[J].Journal of Wuhan Institute of Technology,2011,(03):46.
[3]徐建民,胡小霞,彭坤,等.内插自振弹簧换热管脉冲流强化换热数值分析[J].武汉工程大学学报,2012,(9):66.[doi:103969/jissn16742869201209015]
　XU Jian min,HU Xiao xia,PENG Kun,et al.Numerical analysis of interpolation vibration spring heat exchange tubes under pulse flow[J].Journal of Wuhan Institute of Technology,2012,(03):66.[doi:103969/jissn16742869201209015]
[4]喻九阳,聂思皓,郑小涛,等.波纹管内层流脉动传热和阻力特性的数值研究[J].武汉工程大学学报,2013,(02):60.[doi:103969/jissn16742869201302013]
　YU Jiu yang,NIE Si hao,ZHENG Xiao tao,et al.Numerical analysis on heat transfer characteristic and pressure drop of pulsating flow in corrugated tube[J].Journal of Wuhan Institute of Technology,2013,(03):60.[doi:103969/jissn16742869201302013]
[5]王成刚,刘　俊,刘　慧,等.纵向涡发生器攻角对翅片传热性能的影响[J].武汉工程大学学报,2015,37(01):54.[doi:10. 3969/j. issn. 1674-2869. 2015. 01. 012]
　,,et al.Ｉｎｆｌｕｅｎｃｅ ｏｆ ａｔｔａｃｋ ａｎｇｌｅ ｏｆ ｌｏｎｇｉｔｕｄｉｎａｌ ｖｏｒｔｅｘ ｇｅｎｅｒａｔｏｒ ｏｎ ｆｉｎ　　ｈｅａｔ ｔｒａｎｓｆｅｒ ｐｅｒｆｏｒｍａｎｃｅ[J].Journal of Wuhan Institute of Technology,2015,37(03):54.[doi:10. 3969/j. issn. 1674-2869. 2015. 01. 012]
[6]高　海,喻九阳*,徐建民,等.低温油封冷却器的结构优化及数值模拟[J].武汉工程大学学报,2016,38(4):394.[doi:10. 3969/j. issn. 1674?2869. 2016. 04. 015]
　GAO Hai,YU Jiuyang*,XU Jianmin,et al.Structure Optimization and Numerical Simulation of Low-Temperature Oil Seal Cooler[J].Journal of Wuhan Institute of Technology,2016,38(03):394.[doi:10. 3969/j. issn. 1674?2869. 2016. 04. 015]
[7]徐建民 雷斌 李智勇 黄伟 陈聪.换热管内置分段式弹簧流动与传热的数值模拟[J].武汉工程大学学报,2014,(03):42.
　XU Jian-min,LEI Bin,LI Zhi-yong,et al.Numerical simulation of flow field and heat transfer of sectional spring inserted in heat exchange tube[J].Journal of Wuhan Institute of Technology,2014,(03):42.

备注/Memo

备注/Memo:
收稿日期：20140108作者简介：徐建民（1965），男，湖北武汉人，教授，硕士.研究方向：新型高效化工设备的研究与开发.
更新日期/Last Update: 2014-04-18