Heat transfer in rotating channel with inclined pin-fins

Jun Su Park, Kyung Min Kim, Dong Hyun Lee, Hyung Hee Cho, Minking Chyu

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

5 Citations (Scopus)


This study is to examine experimentally the effects of pin inclination and pin height-to-diameter ratio on the heat/mass transfer characteristics in a pin-fin channel with and without rotation. The test model consists of staggered pin-fin arrays with an inter-pin spacing of 2.5 times of the pin-diameter (S/D=2.5) in both longitudinal and transverse directions. Detailed local heat/mass transfer coefficients on the two principal surfaces of rotating channel are measured using the naphthalene sublimation technique. The inclined angles (θ) studied are 60° and 90°. The pin height-to-diameter ratio (Hp/Dp) ranges from 2 to 4. The Reynolds number is fixed at 7.0 × 103 with two Rotation numbers (0.0 and 0.2). The measured data show that the overall array heat/mass transfer decreases with the angle of inclination relative to the vertical orientation. The overall array averaged as well as the row-resolved heat/mass transfer increases with an increase in Hp/Dp, Rotation generally results in higher heat/mass transfer than the corresponding stationary case. The non-uniformity or redistribution of heat/mass transfer induced by me Coriolis force generally perceived in a ribbed or smooth channel is less evident in a pin-fin channel.

Original languageEnglish
Title of host publicationProceedings of the ASME Turbo Expo 2009
Subtitle of host publicationPower for Land, Sea and Air
Number of pages10
EditionPART A
Publication statusPublished - 2009
Event2009 ASME Turbo Expo - Orlando, FL, United States
Duration: 2009 Jun 82009 Jun 12

Publication series

NameProceedings of the ASME Turbo Expo
NumberPART A


Other2009 ASME Turbo Expo
Country/TerritoryUnited States
CityOrlando, FL

All Science Journal Classification (ASJC) codes

  • Engineering(all)


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