- Thomas, Jeffrey P. and Dowell, Earl H. and Hall, Kenneth C., Modeling viscous transonic limit-cycle oscillation behavior using a harmonic balance approach,
Journal of Aircraft, vol. 41 no. 6
pp. 1266 - 1274 .
(last updated on 2007/04/10)
Presented is a harmonic-balance computational fluid dynamic approach for modeling limit-cycle oscillation behavior of aeroelastic airfoil configurations in a viscous transonic flow. For the NLR 7301 airfoil configuration studied, accounting for viscous effects is shown to significantly influence computed limit-cycle oscillation trends when compared to an inviscid analysis. A methodology for accounting for changes in mean angle of attack during limit-cycle oscillation is also developed.
Airfoils;Viscosity;Oscillations;Damping;Natural frequencies;Harmonic analysis;Mathematical models;