Spectral composition of inhomogeneities of intensity of laser beam translucent the supersonic jet near the nozzle

Dmitri A. Marakasov; Nikolai G. Melnikov; Valentina M. Sazanovich; Ruvim Sh. Tsvyk; Andrei N. Shesternin

doi:10.1117/12.2074769

25 November 2014 Spectral composition of inhomogeneities of intensity of laser beam translucent the supersonic jet near the nozzle

Dmitri A. Marakasov, Nikolai G. Melnikov, Valentina M. Sazanovich, Ruvim Sh. Tsvyk, Andrei N. Shesternin

Author Affiliations +

Proceedings Volume 9292, 20th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 929217 (2014) https://doi.org/10.1117/12.2074769
Event: 20th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 2014, Novosibirsk, Russian Federation

Abstract

The analysis of results of experiments on laser transillumination of the flooded supersonic jet on the wind tunnel of Institute of theoretical and applied mechanics SB RAS is fulfilled. The time spectra of fluctuations of the received power at different values of pressure in the chamber as well as the transformation of the spectra for the initial part of the jet with increasing distance from the nozzle are discussed. The change in the slope of the high-frequency part of the spectrum when lifting beam above the nozzle is demonstrated. Local maxima of the spectral density at frequencies corresponding to the discrete frequencies of acoustic tones generated by the stream are found.

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Dmitri A. Marakasov, Nikolai G. Melnikov, Valentina M. Sazanovich, Ruvim Sh. Tsvyk, and Andrei N. Shesternin "Spectral composition of inhomogeneities of intensity of laser beam translucent the supersonic jet near the nozzle", Proc. SPIE 9292, 20th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 929217 (25 November 2014); https://doi.org/10.1117/12.2074769

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