Effect of blockage ratio on heat transfer enhancement in a channel by flow pulsation

Tae Ho Ji, Jae Min Hyun, Seo Young Kim, Gwang Hoon Rhee

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Experiments are performed to investigate heat transfer enhancement from a heated square cylinder in a channel by pulsating flow. For all the experiments, the amplitude of the pulsating flow is fixed at A = 0.05. The effects of the pulsating frequency (0 Hz < fp < 60 Hz) and the blockage ratio of the square cylinder (ß = 1/10, 1/8, and 1/6) on convective heat transfer are examined. The "lock-on" phenomenon is clearly observed for a square cylinder in the present flow pulsation. The influence of blockage ratio on heat transfer enhancement is examined. The experimental results show that as the blockage ratio decreases, the heat transfer enhancement is more pronounced and lock-on regime broadens.

Original languageEnglish
Title of host publication2007 Proceedings of the ASME/JSME Thermal Engineering Summer Heat Transfer Conference - HT 2007
Pages137-142
Number of pages6
DOIs
StatePublished - 2007
Event2007 ASME/JSME Thermal Engineering Summer Heat Transfer Conference, HT 2007 - Vancouver, BC, Canada
Duration: 8 Jul 200712 Jul 2007

Publication series

Name2007 Proceedings of the ASME/JSME Thermal Engineering Summer Heat Transfer Conference - HT 2007
Volume2

Conference

Conference2007 ASME/JSME Thermal Engineering Summer Heat Transfer Conference, HT 2007
Country/TerritoryCanada
CityVancouver, BC
Period8/07/0712/07/07

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