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1 Research Bulletin / Warsaw University of Technology, Institute of Aeronautics and Applied Mechanics

1 2001

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Separated transonic airfoil flow of humid air

Nosal Z., Selerowicz W.

Research Bulletin / Warsaw University of Technology, Institute of Aeronautics and Applied Mechanics

2001

nr 12

19-24

The results of experimental investigations into a transonic flow of humid air over NACA0012 airfoil at a high angle of attack (5-10 deg) are presented. Three typical cases of transonic separated flows within a wide range of humidity (10% to 80%) were studied. The first one with the presence of high intensity shock causing boundary layer separation, the second one with a flow separation associated with a strong periodic shock oscillations, and the last one with a total boundary layer separation in the absence of a shock wave. For each case pressure measurements and flow visualisations have been performed.