Local Heat Transfer Characteristics on Fin Surface of Plate Fin-Oval Tube with Delta Wing Vortex Generators

被引：1
|
作者：
Shin, Seok-Won
Chung, In-Kee
Kim, Soo-Youn
机构：
来源：
TRANSACTIONS OF THE KOREAN SOCIETY OF MECHANICAL ENGINEERS B | 2009年 / 33卷 / 10期
关键词：
Delta Wing Vortex Generator; Oval Tube; Heat Transfer Enhancement; Naphthalene Sublimation Technique;
D O I：
10.3795/KSME-B.2009.33.10.757
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In the present study, the effect of delta-wing vortex generators(DWVG) on the local heat transfer of the plate fin-oval tube was experimentally analyzed for Reynolds numbers for 2000, 2500 and 3200. The local heat transfer coefficient of the fin surface for four type DWVGs was measured by the naphthalene sublimation technique. As the results, the distribution of the heat transfer coefficient at rear of DWVGs showed longitudinal contours for common flow down DWVGs and wavy contours for common flow up DWVGs. The distribution showed many cell type contours at near wall and downstream for all DWVGs. Compared to case without DWVGs in present experimental tests, all DWVGs showed the best enhancement of heat transfer at Re=2000. Of 4 cases of DWVGs, D type showed the best enhancement of heat transfer.
引用
收藏
页码：757 / 766
页数：10
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