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Enhanced heat transfer in the convergent rectangular channels with ∧/∨-shaped ribs on one wall
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 Title & Authors
Enhanced heat transfer in the convergent rectangular channels with ∧/∨-shaped ribs on one wall
Lee, Myung-Sung; Yu, Ji-Ui; Jeong, Hee-Jae; Choi, Dong-Geun; Ha, Dong-Jun; Go, Jin-Su; Ahn, Soo-Whan;
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The effect of the rib angle-of-attack on heat transfer in the convergent channel with -shaped ribs was examined experimentally. Four differently angled ribs (a = , , , and ) were placed to only the one sided wall. The ribbed wall was manufactured with a fixed rib height (e) of 10 mm and rib spacing (p)-to-height (e) ratio of 10. The convergent channel had a length of 1,000 mm and a cross-sectional areas of at inlet and at exit. The measurement was conducted for the Reynolds numbers ranging from 22,000 to 75,000. The results show that the Nusselt number is generally higher at higher Reynolds number and that an angle-of-attack of at the -shaped rib produces the greatest Nusselt number.
-shaped rib;Convergent rectangular channel;Heat transfer;Total friction factor;Rib angle-of-attack;
 Cited by
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