Structural Instability of Transonic Flow over an Airfoil

Authors: A. G. Kuz'min¹; A. V. Ivanova²

Source: Journal of Engineering Physics and Thermophysics, Volume 77, Number 5, September 2004 , pp. 1022-1026(5)

Publisher: Springer

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Abstract:

Inviscid transonic flow over the DSMA523a and Whitcomb airfoils and an airfoil described by a simple algebraic formula has been investigated numerically. The dependence of the flow structure and the lift coefficient on the freestream Mach number M_infin and the angle of attack alpha

has been studied. The values of M_infin and alpha

at which steady-state flow becomes unstable have been revealed. The relationship between the flow nonuniqueness occurring in certain ranges of variation of M_infin and alpha

and the instability has been analyzed.

Document Type: Research article

DOI: http://dx.doi.org/10.1023/B:JOEP.0000049545.65787.74

Affiliations: 1: St. Petersburg State University, 28 Universitetskii Ave., Petrodvorets, St. Petersburg, 198504, Russia, Email: alexander.kuzmin@pobox.spbu.ru 2: A. V. Luikov Heat and Mass Transfer Institute, National Academy of Sciences of Belarus, 15 P. Brovka Str., Minsk, 220072, Belarus ivanova-, Email: ivanova-a@tut.by

Publication date: 2004-09-01