Film cooling by means of one-row inclined holes arranged in dimples

1Khalatov, AA, 1Borisov, II, 2Dashevsky, YY, 3Pachomov, MA, 3Terechov, VI
1Institute of Engineering Thermophysics of the NAS of Ukraine, Kyiv
2Zorya-Mashproekt, Mykolaiv
3Institute of Thermophysics of the SD RAN, Novosibirsk, Russia
Dopov. Nac. akad. nauk Ukr. 2015, 6:74-82
Section: Energetics
Language: Russian

The comparative experimental study of a flat plate film cooling by means of inclined holes arranged in dimples having the "crater" or trench shape is presented. As shown, these configurations enable one to increase significantly the cooling and to reduce its spanwise non-uniformity as compared to the traditional configuration of inclined holes. These advantages appear remarkably at the higher blowing parameters.

Keywords: cooling efficiency, craters, film cooling, inclined holes, trench
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