An investigation on friction factors and heat transfer coefficients in a rectangular duct with surface roughness |
| |
| Authors: | Soo Whan Ahn Kang Pil Son |
| |
| Affiliation: | (1) Department of Mechanical Engineering, Korea University, Seoul, Korea;(2) College of Engineering, School of Mechanical and Automotive Engineering, Catholic University of Daegu, 330 Keum Rak 1-ri, Hayang-Eup, Kyungsan, Kyungbuk, Korea 712-702,; |
| |
| Abstract: | An investigation on the fully developed heat transfer and friction factor characteristics has been made in rectangular ducts with one-side roughened by five different shapes. The effects of rib shape geometries as well as Reynolds numbers are examined. The rib height-to-duct hydraulic diameter, pitch-to-height ratio, and aspect ratio of channel width to height are fixed ate/De=0.0476,P/e=8, andW/H=2.33, respectively. To understand the characteristics of heat transfer enhancements, the friction factors are also measured. The data indicates that the triangular type rib has a substantially higher heat transfer performance than any other ones. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
