Recent developments in applied mathematics and mechanics: theory, experiment and practice. Devoted to the 80th anniversary of academician N.N.Yanenko

Akademgorodok, Novosibirsk, Russia, June 24 - 29, 2001

Abstracts

Novosibirsk participants

Features of flow structure in supersonic non-isobaric jets

Zapryagaev V.I., Kornilov V.I., Lokotko A.V., Nikiforov S.B., Pavlov A.V., Tchernyshyev A.V.

ITAM SB RAS (Novosibirsk)

Supersonic jet flows play a significant role in different technical devices, determining advances in such activities, as jet and rocket engineering, astronautics, metallurgy. As a result a mixing processes in supersonic flows are very interesting. For this reason more detailed the jet shock-wave structure investigations in a high-speed compressed mixing layer are very important. The generation of streamwise vortex structures in a curved mixing layer of the supersonic jet exhausting on off-design regimes is studied experimentally. The results of optical flow visualization of vortex structures for overexpanded jets are shown for underexpanded jets in addition to previous investigations. The data on development dynamics of streamwise vortices, in particular, of their secondary instability are obtained as well. The known aspects on criteria of flow nozzle separation, character of shock wave interaction in the first and second cells for the nonisobaric jet are analysed for the jet flow.

Note. Abstracts are published in author's edition

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