Investigation on periodically developed heat transfer in a specially enhanced channel

被引：0
作者：
L. H. Zhao
B. D. Zhang
Z. X. Yuan
机构：
[1] Beijing University of Technology,Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Ministry of Education
[2] Beijing University of Technology,Key Laboratory of Heat Transfer and Energy Conversion, Beijing Education Commission
[3] Beijing University of Technology,College of Environmental and Energy Engineering
来源：
Heat and Mass Transfer | 2008年 / 44卷
关键词：
Heat Transfer; Nusselt Number; Convective Heat Transfer; Friction Factor; Heat Transfer Enhancement;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The heat transfer and the flow resistance in the channel with periodic flow-inclining fins attached on the wall have been studied numerically and experimentally on the characteristics in the periodically fully developed flow region. The effect of the fin angle from 0° to 23.2° has been verified on the thermal performance and the flow resistance. The results reveal that the heat transfer is obviously enhanced for both the laminar and the turbulent flow. Analyses also show that the enhancement is accordant to the improvement of the field synergy between the flow velocity and the temperature gradient. Assessments under the identical pump power consumption show that the fin of β = 16.0° is the best in most cases. The most enhancement ratio fall in between 2 and 7.5. The conductivity of the fin material has also been demonstrated to be an important factor to the thermal performance.
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页码：287 / 296
页数：9
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