Nonstationary phenomena in the region of shock-wave interaction with a boundary layer at transonic flow velocities

Nonstationary characteristics of detached flow have been experimentally studied during interaction of the boundary layer with a shock wave that appears on a profiled bump in transonic flow. The experiments were performed with variable shock-wave intensity and position in a T-325 wind tunnel. The flo...

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Veröffentlicht in:Technical physics letters 2017-06, Vol.43 (6), p.570-573
Hauptverfasser: Sidorenko, A. A., Budovskii, A. D., Polivanov, P. A., Vishnyakov, O. I.
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Sprache:eng
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Zusammenfassung:Nonstationary characteristics of detached flow have been experimentally studied during interaction of the boundary layer with a shock wave that appears on a profiled bump in transonic flow. The experiments were performed with variable shock-wave intensity and position in a T-325 wind tunnel. The flow was studied using methods of schlieren imaging, measuring average pressure and its pulsations on the surface of a model, and determining velocity fields by particle image velocimetry. Analysis of the experimental data showed that the observed shock-wave oscillations and flow pulsations in the detachment zone were related to disturbances present in the oncoming boundary layer.
ISSN:1063-7850
1090-6533
DOI:10.1134/S1063785017060268