Test of innovative nozzle design for film cooling system to maximize turbine efficiency

Faure J. Malo-Molina, Kau Fui V. Wong, Andreja Brankovic

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


The ideal design of a turbine blade external film cooling system should contain a minimal uniform cooling film while simultaneously maximizing turbine efficiency. The current research reports on the tests on the pressure drop, hydraulic resistance, and mass flow rate of nine different nozzles. The effectiveness of the resulting film of cold air depends upon the mass flow rate and the shape, size, distribution and directional angles of these tiny nozzles. Of the orifices tested, the orifice shaped with the biggest spherical counter-sink inlet, allows the air to exit with the highest momentum. This shape produces the lowest hydraulic resistance and the highest blowing ratio.

Original languageEnglish (US)
Title of host publicationAdvanced Energy Systems
PublisherAmerican Society of Mechanical Engineers (ASME)
Number of pages7
ISBN (Print)0791836266, 9780791836262
StatePublished - Jan 1 2002

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings

ASJC Scopus subject areas

  • Mechanical Engineering


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