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 Minfin and the angle of attack alpha has been studied. The values of Minfin 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 Minfin and alpha and the instability has been analyzed.

Document Type: Research article

DOI: 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

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