Prediction of film cooling wite a liquid coolant

Shembharkar, TR and Pai, BR (1985) Prediction of film cooling wite a liquid coolant. Technical Report. National Aeronautical Laboratory, Bangalore, India.

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A numerical method is presented to analyse film cooling with a liquid coolant. The model assumes a turbulent boundary layer flow for the hot gas stream and a Couette flow in the liquidquot;'coolant film. A marching procedure is employed for solution of the equations of mass, momentum, enthalpy and species presented. The effects of flow conditions on the film cooling mechanism are discussed. An increase in free stream temperature, free stream velocity or coolant temperature causes reduction in the film-cooled length while an increase in coolant flow rate causes a proportion at increase in the film cooled length. The13; comparison with the limited experimental data indicates that the observed trends are well predicted. However more detailed data are required to validate and refine the prediction procedure particularly with regard to the flow with in and on surface of the coolant film.

Item Type: Monograph (Technical Report)
Uncontrolled Keywords: Film cooling;Liquid coolant;Numerical heat transfer
Subjects: AERONAUTICS > Aircraft Propulsion and Power
Depositing User: M/S ICAST NAL
Date Deposited: 14 Nov 2006
Last Modified: 24 May 2010 04:23

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