| 纵向涡发生器强化传热管的实验研究 |
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| 引用本文： | 栗艳,杨泽亮. 纵向涡发生器强化传热管的实验研究[J]. 热科学与技术, 2006, 5(2): 127-132 |
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| 作者姓名： | 栗艳 杨泽亮 |
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| 作者单位： | 仲恺农业技术学院,机电工程系,广东,广州,510225;华南理工大学,电力学院,广东,广州,510640 |
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| 基金项目： | 国家重点基础研究发展计划项目:(G20000263) |
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| 摘 要： | 介绍了一种高效强化传热管,沿传热管内壁轴向均匀排布三列成对的纵向涡发生器,在常壁温条件下进行加热空气在管内流动的冷却实验,研究强化传热管的传热和阻力特性。结果表明,在过渡流区管内置纵向涡发生器的强化传热大大增强,Nu增大为光管的2.02.3倍,阻力损失也相应有所增加,提出一种比较优化的发生器的形状设计,探讨了传热和阻力随设置间距变化的规律。
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| 关 键 词： | 强化传热 LVG 纵向涡 阻力系数 综合评判准则 |
| 文章编号： | 1671-8097(2006)02-0127-06 |
| 收稿时间： | 2006-04-07 |
| 修稿时间： | 2006-05-20 |
Experimental study on enhanced heat transfer inside tube with longitudinal vortex generator |
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| LI Yan,YANG Ze-liang. Experimental study on enhanced heat transfer inside tube with longitudinal vortex generator[J]. Journal of Thermal Science and Technology, 2006, 5(2): 127-132 |
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| Authors: | LI Yan YANG Ze-liang |
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| Affiliation: | 1. Dept. of Mech. and Eletro. Eng. , Zhongkai Univ. of Agriculture and Tech. , Guangzhou 510225, China; 2. The Electric Power College, South China Univ. of Tech. , Guangzhou 510640, China |
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| Abstract: | Experimental study of gas-water heat exchanger,with three rows of longitudinal vortex generators installed symmetrically on the inner wall of tube along the axis,was introduced in this paper.Result shows that,heat transfer is greatly enhanced by the longitudinal vortex generators for transition flow;Nusselt number is 2.0~2.3 times that of the heat transfer in smooth tube,and pressure loss is increased accordingly.A optimum shape of vortex generator was proposed,the law of heat transfer and pressure loss under different distance was discussed. |
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| Keywords: | enhanced heat transfer longitudinal vortex generator longitudinal vortex pressure loss enhanced heat transfer compositive index |
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