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http://dx.doi.org/10.9726/kspse.2016.20.1.069

Effects of Rib Angles on Heat Transfer in a Square Convergent Channel with Ribs on One Wall  

Lee, Myung-Sung (Gyeongnam Institute for Regional Program Evaluation)
Kim, Beom-Soo (Dpt. of Mechanical & System Engineering, Gyeongsang National University)
Ahn, Soo-Whan (Dpt. of Mechanical & System Engineering, Gyeongsang National University)
Publication Information
Journal of Power System Engineering / v.20, no.1, 2016 , pp. 69-74 More about this Journal
Abstract
The local heat transfer and pressure drops of developed turbulent flows in the convergent channels with square cross-sectional areas along the streamwise distance have been investigated experimentally. Four different parallel angled ribs (a = $30^{\circ}$, $45^{\circ}$, $60^{\circ}$, and $90^{\circ}$) are placed to the one sided wall only, respectively. The ribbed walls are manufactured with a fixed rib height (e)=10 mm and the ratio of rib spacing (p) to height (e) = 10. The measurement was run within the range of Reynolds numbers from 22,000 to 79,000. The result shows that the increases in the Nusselt numbers for the flow attack angles can be seen in the order of $30^{\circ}$, $45^{\circ}$, $60^{\circ}$ and $90^{\circ}$.
Keywords
Rib angle of attack; Heat transfer; Convergent channel; Total friction factor;
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Times Cited By KSCI : 1  (Citation Analysis)
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