| Title |
Effect of Rib Pitch on Heat Transfer and Friction Factor in a Two Wall Divergent Channel |
| Authors |
안수환(Soo Whan Ahn) ; 이명성(Myung Sung Lee) ; 정성수(Seong Soo Jeong) ; 배성택(Sung Taek Bae) |
| DOI |
http://dx.doi.org/10.6110/KJACR.2014.26.4.175 |
| Keywords |
확대 직사각 채널 ; 열전달 ; 마찰계수리브 피치 Divergent rectangular channel ; Heat transfer ; Friction factor ; Rib pitch |
| Abstract |
Experimental investigations of the heat transfer and friction factors in the ribbed divergent rectangular channel with the channel exit hydraulic diameter to inlet hydraulic diameter ratio of 1.16 were performed. The surface heaters were mounted onto the two opposite walls. The main experimental parameter is the ratio of rib pitch (p) to height (e), at which the ratios (p/e) of 6, 10, and 14 are considered in the channel with ribs on one wall only. The straight ribbed square channel is also considered as a comparison. The major findings are that the ratio of p/e = 6 shows the highest values in the heat transfer and the ratio of p/e = 10 indicates the greatest friction factor in the ribbed divergent channel. Editor's note：No major changes or corrections needed. Well written. |