ON DETERMINATION OF THE MECHANISM OF MACH WAVE / BOW-SHOCK INTERACTION

The work presents the results of investigation of interaction of outer couple weak shock waves with a bow shock produced by a triangle plate at Mach number M = 2. The couple of waves were generated by a two-dimensional roughness on the wall of the test section of supersonic tunnel. Hotwire measurements showed generated to free flow perturbations to correspond to N-wave. Optical visualization was done applying schlieren technique and interferometric method using adaptive visualizing transparencies based on absorption saturation. Qualitative coincidence of hotwire and interference data was obtained. Inclination angle of weak waves passed through the bow shock was observed to change.

Keywords:
supersonic flow, N-wave, interaction, hotwire anemometry, adaptive visualizing transparency, schlieren technique.
УДК 532.526 + 53.082.5 + 535.4

ON DETERMINATION OF THE MECHANISM OF MACH WAVE / BOW-SHOCK INTERACTION