Numerical and Experimental Study of a Cooling for Vanes in a Small Turbine Engine

This paper is concerned with a cooling system for inlet guide vanes of a small turbine engine which are exposed to a high temperature gas leaving a combustion chamber. Because of small dimensions of the vanes, only a simple internal cavity and cooling holes can be realized. The idea was to utilize a...

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Bibliographic Details
Main Authors: Šimák, Jan, Michálek, Jan
Format: Conference Proceeding
Language:English
Subjects:
Combustion chambers
Computer simulation
Cooling
Cooling effects
Film cooling
Guide vanes
Heat transfer
High temperature gases
Mathematical models
Numerical methods
Solvers
Thermocouples
Turbine engines
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Summary:This paper is concerned with a cooling system for inlet guide vanes of a small turbine engine which are exposed to a high temperature gas leaving a combustion chamber. Because of small dimensions of the vanes, only a simple internal cavity and cooling holes can be realized. The idea was to utilize a film cooling technique. The proposed solution was simulated by means of a numerical method based on a coupling of CFD and heat transfer solvers. The numerical results of various scenarios (different coolant temperature, heat transfer to surroundings) showed a desired decrease of the temperature, especially on the most critical part – the trailing edge. The numerical data are compared to results obtained by experimental measurements performed in a test facility in our institute. A quarter segment model of the inlet guide vanes wheel was equipped with thermocouples in order to verify an effect of cooling. Despite some uncertainty in the results, a verifiable decrease of the vane temperature was observed.
ISSN:2100-014X
2101-6275
2100-014X
DOI:10.1051/epjconf/201611402106