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http://dx.doi.org/10.3795/KSME-B.2007.31.1.076

Effects of Bleed Flow and Angled Ribs on Heat Transfer Distributions in a Rotating Square Channel  

Park, Suk-Hwan (연세대학교 대학원 기계공학과)
Jeon, Yun-Heung (연세대학교 대학원 기계공학과)
Kim, Kyung-Min (연세대학교 대학원 기계공학과)
Lee, Dong-Hyun (연세대학교 대학원 기계공학과)
Cho, Hyung-Hee (연세대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.31, no.1, 2007 , pp. 76-82 More about this Journal
Abstract
The present study investigated the effects of channel rotation and bleed flow on heat/mass transfer in a square channel with $45^{\circ}$ rib turbulators. The bleed holes were located between the rib turbulators on the leading surface and those on the trailing surface case by case. The tests were conducted under the conditions of various bleed ratios (0.0, 0.2, 0.4) and rotation numbers (0.0, 0.2, 0.4) at Re=10,000. The results suggested that heat/mass transfer characteristics were influenced by the Coriolis force, decrement of main flow rate, secondary flow by angled ribs and bleed hole location. As the bleed ratio (BR) increased, the heat/mass transfer decreased on both surfaces due to the reduction of main flow rate. With increment of the rotation number, heat/mass transfer also decreased and almost the same because the reattachment of the secondary flow induced by angled ribs was weakened on the leading surface and the secondary flow was disturbed on the trailing surface by the Coriolis force.
Keywords
Bleed Hole; Coriolis Force; Naphthalene Sublimation Method; Rotating Channel;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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