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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

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

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ICMJE
MLA
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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