Film cooling performance of liner cooling devices

Pai, BR and Lakshminrayanan, R (1981) Film cooling performance of liner cooling devices. In: International Symposium on Air Breathing Engines, 16-22 Feb 1981, Bangalore, India.

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Abstract

Data on the film cooling performance of several liner cooling devices are obtained over the range of velocity and density ratios relevant to gas turbines. Among the devices with tangential injection, the wiggle strip device and the machined ring with skirt construction provide the13; most effective film cooling. The addition of a skirt to the wiggle strip may improve its performance in the lower velocity range. The lowest effectiveness was obtained with the splash cooling arrangement which gives effective cooling of the slot lip at the expense of downstream performance. Of the discrete hole injection devices tested,13; the dimpled hole construction gives a significantly better performance than normal injection over a wide range of velocity ratios.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Combustion;Cooling Systems;Film Cooling;Linings; Performance Tests;Gas Turbine Engines;Pressure;Drop;Wind Tunnel13; TESTS
Subjects: ENGINEERING > Fluid Mechanics and Thermodynamics
Division/Department: Propulsion Division, Propulsion Division
Depositing User: Ms Indrani V
Date Deposited: 04 Jul 2007
Last Modified: 24 May 2010 09:55
URI: http://nal-ir.nal.res.in/id/eprint/4227

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