Total cooling effectiveness on laminated multilayer for impingement/effusion cooling system

Seon Ho Kim, Kyeong Hwan Ahn, Eui Yeop Jung, Jun Su Park, Ki Young Hwang, Hyung Hee Cho

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

5 Citations (Scopus)

Abstract

The next generation aircraft combustor liner will be operating in more severe conditions. This means that the current cooling system needs significant amounts of cooling air to maintain cooling intensity. The present study investigates experimentally the total cooling effectiveness of an integrated impingement/effusion cooling system (thin perforated laminate plate) and effusion cooling system (single plate) at the same blowing ratio of 0.2 to 1.2. The infrared thermography method was employed to evaluate total cooling effectiveness and to determine the fully developed region of cooling performance. The holes arrays on both plates are 13 × 13 and the centers formed a square pattern (i.e., an in-line array). The perforated laminate plate is constructed of three layers and pins that were installed between the layers. In order to avoid increasing the thickness and volume, the layer thickness-to-hole diameter ratio was 0.29, and the pin height-to-hole diameter ratio, which is equivalent to the gap between the plates, was 0.21. The single plate had the same total plate thickness-to-hole diameter, but was composed of only one layer. As a result, the total cooling effectiveness of the laminate plate is 47% ∼ 141% better than single plate depending on the blowing ratio. Also, a fully developed region appears on the 2nd or 3th row of holes.

Original languageEnglish
Title of host publicationHeat Transfer
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791845721
DOIs
Publication statusPublished - 2014 Jan 1
EventASME Turbo Expo 2014: Turbine Technical Conference and Exposition, GT 2014 - Dusseldorf, Germany
Duration: 2014 Jun 162014 Jun 20

Publication series

NameProceedings of the ASME Turbo Expo
Volume5B

Other

OtherASME Turbo Expo 2014: Turbine Technical Conference and Exposition, GT 2014
CountryGermany
CityDusseldorf
Period14/6/1614/6/20

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Kim, S. H., Ahn, K. H., Jung, E. Y., Park, J. S., Hwang, K. Y., & Cho, H. H. (2014). Total cooling effectiveness on laminated multilayer for impingement/effusion cooling system. In Heat Transfer (Proceedings of the ASME Turbo Expo; Vol. 5B). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/GT2014-26692