Heat/mass transfer characteristics in angled ribbed channels with various bleed ratios and rotation numbers

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)


The present study investigates the effects of secondary flow due to angled rib turbulators on the heat/mass transfer in the square channels with channel rotation and bleed flow. The angle of attack of the angled ribs was 45°. The bleed holes were located between the rib turbulators on either the leading or trailing surface. The tests were conducted under the conditions corresponding to various bleed ratios (BR = 0.0, 0.2 and 0.4) and rotation numbers (Ro=0.0, 0.2 and 0.4) at Re= 10,000. The results suggest that the heat/mass transfer characteristics were influenced by the Coriolis force, the decrement of the main flow rate and the secondary flow. In the 90° angled ribbed channel, the heat/mass transfer reduced on the leading surface with an increment in the rotation number, but it increased on the trailing surface. However, it decreased on both surfaces in the 45° angled ribbed channel. As the bleed ratio increased, the Sherwood number ratios decreased on both the bleeding and non-bleeding surfaces for the 45° angled ribs, but increased on the bleeding surface for the 90° angled ribs.

Original languageEnglish
Title of host publicationProceedings of the ASME Turbo Expo 2007 - Power for Land, Sea, and Air
Number of pages10
Publication statusPublished - 2007
Event2007 ASME Turbo Expo - Montreal, Que., Canada
Duration: 2007 May 142007 May 17

Publication series

NameProceedings of the ASME Turbo Expo
Volume4 PART A


Other2007 ASME Turbo Expo
CityMontreal, Que.

All Science Journal Classification (ASJC) codes

  • Engineering(all)


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