Thermal visualization on surface with transverse perforated ribs

详细信息	查看全文 | 推荐本文 |

• 作者：C. Nuntadusit^a ; ^{chayut@me.psu.ac.th} ; M. Wae-hayee^a ; A. Bunyajitradulya^b ; S. Eiamsa-ard^c
• 关键词：Perforated rib ; Heat transfer enhancement ; Thermochromic liquid crystal sheet
• 刊名：International Communications in Heat and Mass Transfer
• 出版年：2012
• 期刊代码：74_07351933
• 类别：et
• 出版时间：May, 2012
• 卷：39
• 期：5
• 页码：634-639
• 文件大小：1573 K

摘要

This paper presents the heat transfer and flow characteristics in a channel with different types of transverse perforated ribs. The effects of perforation/hole inclination angle (胃 = 0掳, 15掳 and 30掳) and a location of hole on the rib (h = 0.2H, 0.5H and 0.8H), have been examined. The investigation was performed at constant Reynolds number (Re) of 60,000. The experimental heat transfer results via Thermochromic liquid crystal sheet are reported along with the numerical flow characteristics. The results reveal that due to jet-like flows impinging on the surface, the inclined perforated rib considerably improve the heat transfer immediately downstream from the ribs, compared to straight perforated and solid ones, resulting in superior overall heat transfer performance.