INFLUENCE OF A LAMINAR BOUNDARY LAYER AND LAMINAR INJECTION ON FILM COOLING PERFORMANCE.

R. J. Goldstein, T. Yoshida

Research output: Contribution to journalArticlepeer-review

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Abstract

Measurements are reported of the film cooling effectiveness and heat transfer following injection of air into a mainstream of air. A single row of circular injection holes inclined at an angle of 35 deg is used with a lateral spacing between the holes of three diameters. A low Reynolds number mainstream permits studying the influence of a laminar approaching boundary layer. Measurements of the surface heat transfer taken with no injection indicate that the hole openings can effectively trip the laminar boundary layer into a turbulent flow. The type of the approaching boundary layer has relatively little influence on either the adiabatic effectiveness or the heat transfer with film cooling.

Original languageEnglish (US)
JournalAmerican Society of Mechanical Engineers (Paper)
Issue number81 -HT-38
StatePublished - Jan 1 1981

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