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An Investigation on Friction Factors and Heat Transfer Coefficients in a Rectangular Duct with Surface Roughness  

Ahn, Soo-Whan (School of Transport Vehicle Engineering, Institute of Marine Industry, Gyeongsang National University)
Son, Kang-Pil (School of Transport Vehicle Engineering, Institute of Marine Industry, Gyeongsang National University)
Publication Information
Journal of Mechanical Science and Technology / v.16, no.4, 2002 , pp. 549-556 More about this Journal
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 at e/De=0.0476, P/e=8, and W/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
Heat Transfer Coefficient; Pressure Drop; Rib-Roughened Rectangular Duct; Heat Transfer Performance; Roughness Function;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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