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[1]陈瑶,顾伯勤,周剑锋,等.正弦型波纹管强化传热机制的数值分析[J].南京工业大学学报(自然科学版),2014,36(04):58-63.[doi:10.3969/j.issn.1671-7627.2014.04.011]
 CHEN Yao,GU Boqin,ZHOU Jianfeng,et al.Numerical simulation of enhanced heat transfer mechanism in sinusoidal corrugated tubes[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2014,36(04):58-63.[doi:10.3969/j.issn.1671-7627.2014.04.011]
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正弦型波纹管强化传热机制的数值分析()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
36
期数:
2014年04期
页码:
58-63
栏目:
出版日期:
2014-07-01

文章信息/Info

Title:
Numerical simulation of enhanced heat transfer mechanism in sinusoidal corrugated tubes
文章编号:
1671-7627(2014)04-0058-06
作者:
陈瑶顾伯勤周剑锋吴士伟
南京工业大学 机械与动力工程学院,江苏 南京 211800
Author(s):
CHEN YaoGU BoqinZHOU JianfengWU Shiwei
College of Mechanical and Power Engineering,Nanjing Tech University,Nanjing 211800,China
关键词:
正弦型波纹管 强化传热 数值模拟
Keywords:
sinusoidal corrugated tube enhanced heat transfer numerical simulation
分类号:
TK124
DOI:
10.3969/j.issn.1671-7627.2014.04.011
文献标志码:
A
摘要:
基于Fluent软件建立了正弦型波纹管内流体的数值分析模型,研究了湍流状态下管内流体的流动与传热特性,分析了波纹管不同结构参数及流体进口速度对管内强化传热性能的影响规律。研究表明:当雷诺数Re相同时,正弦型波纹管内流体的平均努赛尔数Nu是其当量直径光管的1.65~2.67倍,且当Re约为28 000时,传热效果最佳; 波高、波长对波纹管强化传热均有较大影响,在高雷诺数条件下,经过结构优化的波纹管能使回流区与主流区交界处形成不稳定的剪切层,此时传热效果达到最优。
Abstract:
The flow and heat transfer performances of water in sinusoidal corrugated tubes under turbulent state were numerically investigated by Fluent software,and the influences of inlet velocity and tube structure parameters on heat transfer performance were analyzed.It was revealed that the mean Nusselt number(Nu)in the corrugated tube was about 1.65-2.67 times as much as that in the straight tube with the same equivalent diameter,and the best enhancing heat transfer performance was obtained when the Reynolds number(Re)equaled about 28 000.The wave height and the periodical length of corrugated tube had significant influence on heat transfer results.Under the condition of the high Reynolds number,the heat transfer performance would be the best one when the unstable shearing boundary layer formed at the junction between the backflow zone and the main stream zone.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2013-10-25
基金项目:国家自然科学基金(51205184); 江苏省自然科学基金(BK2011810); 江苏省高校自然科学基金(11KJB480004)
作者简介:陈瑶(1988—),女,河南南阳人,硕士,主要研究方向为微管道的强化传热; 顾伯勤(联系人),教授,E-mail:bqgu@njtech.edu.cn..
更新日期/Last Update: 2014-07-31