A research facility for film cooling investigations with emphasis on the instrumentation system 13; 13;

Manickam, MD (1987) A research facility for film cooling investigations with emphasis on the instrumentation system 13; 13;. Technical Report. National Aeronautical Laboratory, Bangalore, India.

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Abstract

The layout and the instrumentation of a facility for film cooling investigation is described. The injectant air is heated and the mainflow air remains at ambient temperature while the temperature ratio between the injectant and the main flow is simulated. The lift-off/attachment characteristics, the nature of streamwise penetration, and the lateral spreading of the injectant film for a discrete hole injection configuration in an accelerating turbine blade passage was studied. Though detailed studies of injectant films in the case of flat plates have been carried out by many researchers, little work has been done on the above topic for the case of actual blades. Many regions remain unexplored in this discrete hole cooling process which is considered promising for turbine blades. The instrumentation system has been geared to obtain details of flow and mixing in the vicinity of the injection holes, including the upstream and the downstream regions. (Author)

Item Type: Proj.Doc/Technical Report (Technical Report)
Uncontrolled Keywords: Automatic control;Cascade wind tunnel;Data acquisition;Gas injection;Wind tunnel apparatus;Flow measurement;Heat transfer; Velocity measurement;Temperature measurement
Subjects: ASTRONAUTICS > Ground Support Systems and Facilities (Space)
Division/Department: Propulsion Division
Depositing User: M/S ICAST NAL
Date Deposited: 09 Nov 2006
Last Modified: 24 May 2010 09:52
URI: http://nal-ir.nal.res.in/id/eprint/3133

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