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http://dx.doi.org/10.6110/KJACR.2014.26.4.175

Effect of Rib Pitch on Heat Transfer and Friction Factor in a Two Wall Divergent Channel  

Ahn, Soo Whan (Department of Mechanical and System Engineering, Institute of Marine Industry, Gyeongsang National University)
Lee, Myung Sung (Department of Mechanical and System Engineering, Graduate School, Gyeongsang National University)
Jeong, Seong Soo (Department of Mechanical and System Engineering, Graduate School, Gyeongsang National University)
Bae, Sung Taek (Korea Institute of Industrial Technology)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.26, no.4, 2014 , pp. 175-180 More about this Journal
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.
Keywords
Divergent rectangular channel; Heat transfer; Friction factor; Rib pitch;
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