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Article Dans Une Revue Journal of Physics: Conference Series Année : 2012

Experimental convective heat transfer characterization of pulsating jet in cross flow: influence of Strouhal number excitation on film cooling effectiveness

Résumé

In actual gas turbine system, unsteadiness of the mainstream flow influences heat transfer and surface pressure distribution on the blade. In order to simulate these conditions, an experimental film cooling study with externally imposed pulsation is performed with purpose of characterizing both effects of turbine unsteadiness on film cooling (with frequency ranges typical to actual turbine), and also to figure out the range of Strouhal number pulsation under various blowing conditions, which could possibly deliver a performance improvement in film cooling. Influence of injection flow pulsation on adiabatic effectiveness and convective heat transfer coefficient are determined from IR-thermography of the wall for distances to the hole exit between 0 and 30 D.

Dates et versions

hal-04370372 , version 1 (03-01-2024)

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Citer

Gildas Lalizel, Qaiser Sultan, Matthieu Fénot, Eva Dorignac. Experimental convective heat transfer characterization of pulsating jet in cross flow: influence of Strouhal number excitation on film cooling effectiveness. Journal of Physics: Conference Series, 2012, 395, pp.012043. ⟨10.1088/1742-6596/395/1/012043⟩. ⟨hal-04370372⟩
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