Behavior of a Coolant Film With Two Rows of Holes Along the Pressure Side of a High-Pressure Nozzle Guide Vane

[+] Author and Article Information
T. Arts

von Karman Institute for Fluid Dynamics, B-1640 Rhode Saint Genèse, Belgium

A. E. Bourguignon

SNECMA-Centre de Villaroche, F-77550 Moissy Cramayel, France

J. Turbomach 112(3), 512-520 (Jul 01, 1990) (9 pages) doi:10.1115/1.2927687 History: Received January 27, 1989; Online June 09, 2008


The purpose of this paper is to quantify the influence on external convective heat transfer of a coolant film whose position varies along the pressure side of a high-pressure turbine nozzle guide vane. The measurements were performed in the short-duration Isentropic Light Piston Compression Tube facility of the von Karman Institute. The effects of external and internal flow are considered in terms of Mach number, Reynolds number, free-stream turbulence intensity, blowing rate, and coolant to free-stream temperature ratio. The way to evaluate these results in terms of film cooling efficiency and heat transfer coefficient is finally discussed.

Copyright © 1990 by The American Society of Mechanical Engineers
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