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Gas Temperature Measurement in Internal Cooling Passages FREE

[+] Author Affiliations
Z. Wang, P. T. Ireland

University of Oxford, Oxford

S. T. Kohler

Rolls-Royce PLC, Bristol

Paper No. 96-GT-534, pp. V004T09A059; 8 pages
doi:10.1115/96-GT-534
From:
  • ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition
  • Volume 4: Heat Transfer; Electric Power; Industrial and Cogeneration
  • Birmingham, UK, June 10–13, 1996
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7875-0
  • Copyright © 1996 by ASME

abstract

The gas temperature distribution is important in the measurement and the definition of heat transfer to various gas turbine cooling problems. This paper describes a novel technique which employs encapsulated thermochromic liquid crystals on a fine nylon mesh to give virtually instantaneous gas temperature distribution measurement. The hue value of the liquid crystal on the mesh was calibrated to the gas temperature for a broad response crystal, in the range of 22–40°C, and for a narrow band crystal from 29–31°C. Data processing issues specific to the application of liquid crystals on porous target are discussed and the results of investigations provided. Finally, applications that demonstrate the viability of the method are given.

Copyright © 1996 by ASME
This article is only available in the PDF format.

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