Heat transfer performance for tube inserted with helical screw-tape porous media and its field synergy analysis

被引：0

作者：

Zhang, Xiao-Yu ^{[1
]}

Liu, Zhi-Chun ^{[1
]}

Liu, Wei ^{[1
]}

机构：

[1] School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

来源：

Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics | 2011年 / 32卷 / 08期

关键词：

Screws - Heat transfer - Flow of water - Laminar flow - Tubes (components) - Boundary layers;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The present study introduced a tube inserted with helical screw-tape porous media which can make the fully developed laminar flow in the tube to form an equivalent thermal boundary layer, and thereby enhance the heat transfer between the fluid and the tube wall. At the same time, the increase of flow resistance in the tube is not so obvious. The overall flow and heat transfer performance for the fully developed laminar water flow in a tube inserted with helical screw-tape porous media was investigated numerically. The comparisons between helical screw-tape porous media and ring porous media and cylindrical porous media were made. And its mechanisms of enhancing heat transfer were also analyzed using the principle of field synergy. The results shows that the tube inserted with the helical screw-tape porous media can improve the flow and heat transfer performance effectively, the value of PEC varied between 3.60 and 3.95.

引用

页码：1371 / 1374

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