Using CryoTSP as a Tool for Transition Detection and Instability Examination at High Reynolds Numbers
The method of temperature-sensitive paint (TSP) adapted to cryogenic wind tunnels, i.e. cryoTSP is used to detect the natural laminar-turbulent transition of boundary layers in high speed flows. Besides pure transition detection, cryoTSP images provide information on the transition zone, the characteristics of transition, and on the type of instability. A method is proposed to determine the transition zone out of cryoTSP result images for 2D-wings, where the transition process is caused by Tollmien-Schlichting instabilities.
KeywordsWind Tunnel Transition Location Transition Detection Boundary Layer Transition Laminar Separation Bubble
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