[1]王奉明,张靖周,王锁芳.扰流柱形状对流动换热特性影响的数值研究[J].南京师范大学学报(工程技术版),2005,05(02):027-30.
　WANG Fengming,ZHANG Jingzhou,WANG Suofang.A Numerical Study on the Effects of Flow and Heat Transfer in a Rectangular Passage with Vertical Column Turbulence[J].Journal of Nanjing Normal University(Engineering and Technology),2005,05(02):027-30.
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扰流柱形状对流动换热特性影响的数值研究
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南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
05卷
期数:
2005年02期
页码:
027-30
栏目:
出版日期:
2005-06-30

文章信息/Info

Title:
A Numerical Study on the Effects of Flow and Heat Transfer in a Rectangular Passage with Vertical Column Turbulence
作者:
王奉明; 张靖周; 王锁芳
南京航空航天大学能源与动力学院, 江苏南京210016
Author(s):
WANG Fengming;  ZHANG Jingzhou;  WANG Suofang
School of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Jiangsu Nanjing 210016, China
关键词:
强化传热;  压力损失;  水滴形扰流柱;  数值计算
Keywords:
enhanced heat transfer;  pressure loss;  w ater drop-shaped co lum n;  num er ica l calcu lation
分类号:
TK124
摘要:
运用FLUENTCFD商用软件对装有圆形、准水滴形、椭圆形和水滴形4种扰流柱叉排阵列矩形通道内的流动和换热进行了三维数值模拟,获得了通道内流场、压力场以及局部对流换热系数分布的基本特征,并对扰流柱通道的换热特性和压力损失特性进行了对比分析.计算结果表明:装有水滴形扰流柱阵列矩形通道的压力损失系数分别为前3者的44.1%、70.5%和79.8%,而恒热流壁面的平均对流换热系数相对于前3者而言分别降低了18.5%、12.4%和3.8%,压力损失降低的幅度明显高于强化换热的减弱.水滴形扰流柱是一种具有综合性能、替代常规圆形扰流柱的理想结构.
Abstract:
FLUENT-CFD So ftwa re is used to sim ulate the flow and heat transfe r in a rectangular passag ew ith the arrays of c irc le- shaped, sim ilar-drop-shaped, e lliptic- shaped and wa ter drop-shaped columns. The ve lo city fields, pressure fie lds, temperature fie lds and the lo ca l convective hea t transfer coeffic ients are ob tained and the enhancem ent o f heat transfer and the pressure loss cha racte ristics a re com pared. The ca lcu la ted results show that the pressure lo ss o f drop- shaped columns is 66. 3%, 70. 5% and 79. 8% com pa red w ith the fo rme r three w hile the av erage heat transfer coe fficien t on the un iform hea t flux endw a ll decreases 18. 5%, 12. 4% and 3. 8%, respec tive ly. The reduced range of the pressure loss is ev idently higher than the weaken ing o f the enhance hea t transfer. So that thew ater drop- shaped co lumn array is a prom ising con figura tion w ith a comprehens ive properties and can replace the norm a l c irc le- shaped co lumn.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目: 航空支撑科技基金资助项目( 02B52007) .
作者简介: 王奉明( 1979-) , 硕士研究生, 主要从事传热与传质的学习与研究. E-m ail:w fm7979@ 163. com
通讯联系人: 王锁芳( 1963-) , 博士, 副教授, 主要从事流动与传热的教学与研究. E-m ail: sfw ang@ nuaa. edu. cn
更新日期/Last Update: 2013-04-29