Origin of Streamwise Vortices in Shear Layer of Supersonic Jets

Details Origin of Streamwise Vortices in Shear Layer of Supersonic Jets Origin of Streamwise Vortices in Shear Layer of Supersonic Jets

Feb 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005esasp.563..365z&link_type=abstract

Proceedings of the Fifth European Symposium on Aerothermodynamics for Space Vehicles (ESA SP-563). 8-11 November 2004, Cologne,

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Investigation of structure of supersonic jet exhausted from convergent nozzle with polish inner surface and with microroughness on the inner nozzle surface is presented. Essential influence of the artificial microroughness on spatial flow structure in the supersonic jet shear layer is shown. Results of the spectral analysis of the stationary distributions in the jet shear layer with use both Fourier and wavelet analyses are presented. Accordance between results of Fourier and wavelet analyses is shown. Possibility existence local laminar flow region near nozzle exit for supersonic underexpanded jet exhaust from convergent axisymmetric nozzle is observed.

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