Correlation between heat transfer and pressure drop in channels with periodically grooved parts

被引：67
|
作者：
Adachi, T [1 ]
Uehara, H
机构：
[1] Saga Univ, OTEC Lab, Saga 8408502, Japan
[2] Saga Univ, Dept Mech Engn, Saga 8408502, Japan
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2001年 / 44卷 / 22期
关键词：
D O I：
10.1016/S0017-9310(01)00070-9
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Correlation between heat transfer and pressure drop in channels with periodically grooved parts along the streamwise direction is investigated for various channel configurations by assuming two-dimensional and periodically fully developed flow and temperature fields, Streamwise periodic variations of the cross-section induce the bifurcation from steady-state flow to oscillatory one. Heat transfer is enhanced significantly after the bifurcation with the increase of pressure drop. An efficiency defined as the ratio of the heat transfer enhancement to the increase of pressure drop is considered. It is found that the channels with expanded grooves perform efficiently, while the channels with contracted grooves inefficiently. (C) 2001 Elsevier Science Ltd. All rights reserved.
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收藏
页码：4333 / 4343
页数：11
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