Effect of free-stream turbulence on gas turbine blade heat transfer

Krishnamoorthy, V and Sukhatme, SP (1989) Effect of free-stream turbulence on gas turbine blade heat transfer. Journal of Turbomachinery, 111 . pp. 497-501.

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Abstract

This paper describes the results of systematic investigations undertaken to study the effect of free-stream turbulence on the heat transfer coefficient distribution around gas turbine rotor blades and nozzle guide vanes. The heat transfer coefficient distribution around the blade surface was obtained under a uniform heat flux boundary condition. Experiments were conducted in the Reynolds number range 2.0-8.1 x 10 to the 5th (exit Mach number range 0.182 to 0.600) with the free-stream turbulence level in the range 1.0-21.3 percent. A new type of active turbulence generator was used for generating high turbulence levels. Correlations were obtained for the effect of free-stream turbulence on the local heat transfer coefficient in the laminar, transitional, and turbulent boundary layer regions.

Item Type: Journal Article
Uncontrolled Keywords: Free flow;Gas turbines;Guide wanes;Heat transfer coefficients;Turbine blades;Turbulence effects;Boundary layer transition;Laminar boundary layer;Mach number;Reynolds number;Turbulent boundary layer
Subjects: AERONAUTICS > Aircraft Propulsion and Power
ASTRONAUTICS > Spacecraft Propulsion & Power
Division/Department: Propulsion Division, Propulsion Division
Depositing User: M/S ICAST NAL
Date Deposited: 17 Mar 2008
Last Modified: 24 May 2010 09:55
URI: http://nal-ir.nal.res.in/id/eprint/4409

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