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Heat Transfer Characteristics of an Impingement Plate Used in a Turbine Vane Cooling System

[+] Author Affiliations
Changmin Son, David Gillespie, Peter Ireland

University of Oxford, Oxford, United Kingdom

Geoffrey M. Dailey

Rolls-Royce plc, Derby, United Kingdom

Paper No. 2001-GT-0154, pp. V003T01A037; 8 pages
doi:10.1115/2001-GT-0154
From:
  • ASME Turbo Expo 2001: Power for Land, Sea, and Air
  • Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration
  • New Orleans, Louisiana, USA, June 4–7, 2001
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7852-1
  • Copyright © 2001 by ASME

abstract

Detailed heat transfer coefficient distributions have been measured on both surfaces of the impingement plate of an engine-representative impingement cooling system using the thermochromic liquid crystal (TLC) transient technique. The color images of the TLC on the impingement downstream surface provide evidence of a re-impingement flow. The re-impingement flow is found to contribute to local increases in the heat transfer on the impingement plate downstream surface. It was found that the average heat transfer coefficient on the impingement downstream surface is about 50% of the average target surface heat transfer coefficient. The results are compared with a previously reported correlation.

Copyright © 2001 by ASME

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