Effects of channel rotation and bleed flow on heat/mass transfer characteristics in a 90° ribbed square channel

Suk Hwan Park, Yun Heung Jeon, Kyung Min Kim, Dong Hyun Lee, Hyung Hee Cho

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The present study investigated the effects of channel rotation and bleed flow on heat/mass transfer in a 90° ribbed square channel. 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 bleeding 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, bleed flow and bleed hole location. The heat/mass transfer on the surface with bleed flow was more increased than that without bleed flow, but that on the opposition surface was decreased. Those were due to the effects of the tripping flow and the diminution of main flow rate respectively. The results also showed that the heat/mass transfer characteristics were different according to bleed hole location and channel rotation.

Original languageEnglish
Pages (from-to)83-90
Number of pages8
JournalTransactions of the Korean Society of Mechanical Engineers, B
Issue number1
Publication statusPublished - 2007 Jan


All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

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