FILM COOLING EFFECTIVENESS ON A TURBINE BLADE.

R. J. Goldstein, Y. Kornblum, E. R G Eckert

Research output: Contribution to journalConference articlepeer-review

11 Scopus citations

Abstract

The present study examines the importance of curvature on film cooling with two rows of staggered injection holes on both the pressure (concave) and suction (convex) sides of a turbine blade. The results of the experiments indicate that curvature plays an important role in determining film-cooling effectiveness even with multiple-row injection. At low and moderate blowing rates the effectiveness is better on a convex than on a concave surface. At high blowing rates the effectiveness is not greatly influenced by the surface curvature. The influence of curvature, however, is much less than was found with injection through a single row of holes where the individual jet tend to act more independently. In general, the two rows of holes provide higher effectiveness on any of the surfaces than does a single row of holes - certainly at the same blowing rate and, in general, also for the same mass addition per unit span of the blade.

Original languageEnglish (US)
Pages (from-to)193-200
Number of pages8
JournalIsrael Journal of Technology
Volume20
Issue number4-5
StatePublished - Dec 1 1982
EventProc of the 24th Isr Annu Conf on Aviat and Astronaut (Sel Pap) - Tel Aviv, Isr
Duration: Feb 17 1982Feb 18 1982

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