Scholars@Duke

Nonlinear inviscid aerodynamic effects on transonic divergence, flutter, and limit-cycle oscillations

Publication ,  Journal Article
Thomas Jeffrey, P; Dowell Earl, H; Hall Kenneth, C
Published in: AIAA Journal
2002

By the use of a state-of-the-art computational fluid dynamic (CFD) method to model nonlinear steady and unsteady transonic flows in conjunction with a linear structural model, an investigation is made into how nonlinear aerodynamics can effect the divergence, flutter, and limit-cycle oscillation (LCO) characteristics of a transonic airfoil configuration. A single-degree-of-freedom (DOF) model is studied for divergence, and one- and two-DOF models are studied for flutter and LCO. A harmonic balance method in conjunction with the CFD solver is used to determine the aerodynamics for finite amplitude unsteady excitations of a prescribed frequency. A procedure for determining the LCO solution is also presented. For the configuration investigated, nonlinear aerodynamic effects are found to produce a favorable transonic divergence trend and unstable and stable LCO solutions, respectively, for the one- and two-DOF flutter models.

Duke Scholars

Jeffrey P. Thomas
Author Jeffrey P. Thomas Thomas Lord Department of Mechanical Engineering and Materia ...
Earl H. Dowell
Author Earl H. Dowell Thomas Lord Department of Mechanical Engineering and Materia ...
Kenneth C. Hall
Author Kenneth C. Hall Thomas Lord Department of Mechanical Engineering and Materia ...

Published In

AIAA Journal

Publication Date

2002

Volume

40

Issue

4

Start / End Page

638 / 646

Related Subject Headings

  • Aerospace & Aeronautics
  • 4012 Fluid mechanics and thermal engineering
  • 4001 Aerospace engineering
  • 0913 Mechanical Engineering
  • 0905 Civil Engineering
  • 0901 Aerospace Engineering
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Thomas Jeffrey, P., Dowell Earl, H., & Hall Kenneth, C. (2002). Nonlinear inviscid aerodynamic effects on transonic divergence, flutter, and limit-cycle oscillations. AIAA Journal, 40(4), 638–646.
Thomas Jeffrey, P., H. Dowell Earl, and C. Hall Kenneth. “Nonlinear inviscid aerodynamic effects on transonic divergence, flutter, and limit-cycle oscillations.” AIAA Journal 40, no. 4 (2002): 638–46.
Thomas Jeffrey P, Dowell Earl H, Hall Kenneth C. Nonlinear inviscid aerodynamic effects on transonic divergence, flutter, and limit-cycle oscillations. AIAA Journal. 2002;40(4):638–46.
Thomas Jeffrey, P., et al. “Nonlinear inviscid aerodynamic effects on transonic divergence, flutter, and limit-cycle oscillations.” AIAA Journal, vol. 40, no. 4, 2002, pp. 638–46.
Thomas Jeffrey P, Dowell Earl H, Hall Kenneth C. Nonlinear inviscid aerodynamic effects on transonic divergence, flutter, and limit-cycle oscillations. AIAA Journal. 2002;40(4):638–646.

Published In

AIAA Journal

Publication Date

2002

Volume

40

Issue

4

Start / End Page

638 / 646

Related Subject Headings

  • Aerospace & Aeronautics
  • 4012 Fluid mechanics and thermal engineering
  • 4001 Aerospace engineering
  • 0913 Mechanical Engineering
  • 0905 Civil Engineering
  • 0901 Aerospace Engineering