- Thomas, Jeffrey P. and Dowell, Earl H. and Hall, Kenneth C., Modeling viscous transonic limit cycle oscillation behavior using a harmonic balance approach,
Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, vol. 3
pp. 1658 - 1666 .
(last updated on 2007/04/10)
Presented is a harmonic-balance (HB) computational fluid dynamic (CFD) approach for modeling limit cycle oscillation (LCO) behavior of aeroelastic airfoil configurations in a viscous transonic flow. For the NLM 7301 airfoil configuration studied, accounting for viscous effects is shown to significantly influence computed LCO trends when compared to an inviscid analysis. Methodology for accounting for changes in mean angle-of-attack during LCO is also developed.
Oscillations;Airfoils;Viscous flow;Computational fluid dynamics;Harmonic analysis;Computer simulation;