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Journal of Flow Visualization and Image Processing
SJR: 0.161 SNIP: 0.312 CiteScore™: 0.5

ISSN Imprimer: 1065-3090
ISSN En ligne: 1940-4336

Journal of Flow Visualization and Image Processing

DOI: 10.1615/JFlowVisImageProc.2011002204
pages 215-224

TRANSONIC 3D NON-STATIONARY FLOW VISUALIZATION USING PULSE TRANSVERSAL DISCHARGE

Irina A. Znamenskaya
Faculty of Physics, Lomonosov Moscow State University, 1 Leninskie Gory, Moscow, 119991, Russia
Tahir A. Kuli-Zade
Faculty of Physics, Lomonosov Moscow State University, 1−2 Leninskiye Gory, Moscow, 119991, Russia
V. N. Kulikov
Moscow Aviation University, Moscow, 125993, Volokolamskoe Shosse 4, Russian Federation
S. P. Perminov
Moscow Aviation University, Moscow, 125993, Volokolamskoe Shosse 4, Russian Federation

RÉSUMÉ

Application of the 3D visualization method with high time resolution for investigation of gas flow past a model of an oversized cone-cylinder body is presented. The nanosecond transversal spatial discharge with plasma electrodes is used for transonic flows with shock waves visualization in a shock tube. The discharge electric current time and luminescence time is 200 ns. Flow structure details are visualized by plasma flash glow recording. The pulse discharge visualization method allowed obtaining images of local low-density areas from two different views − upwind and downwind the streamlined model. The simultaneous instant images of discharge glow were taken by two cameras through opposite windows of the test chamber. Elements of the visualized flow structure are: shock waves, separation lines, vortices in a rear separation zone, terminating discontinuity, and boundary separation zone instabilities on glass windows surface.


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