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Dynamically Linearized Time-Domain Approach for Limit-Cycle Oscillation Prediction for an Elastic Panel

Publication ,  Journal Article
Serafim, LP; Dowell, EH
Published in: AIAA Journal
January 1, 2024

A nonlinear aeroelastic model for a flexible panel is extended to consider the Euler equation as the aerodynamic model. A highly efficient method is presented to compute the generalized aerodynamic forces from a CFD simulation, and the results are compared to those results previously obtained using full potential flow aerodynamics and the linear piston theory. The flutter onset condition as well as limit cycle oscillation amplitudes are computed for a range of supersonic Mach numbers. Additionally, the effects of a shock wave and a viscous boundary layer (Reynoldsaveraged Navier–Stokes) are considered in the computational fluid dynamics simulation and are implemented in the aeroelastic model via the generalized aerodynamic force obtained by the new approach. Conclusions are made based on the use and application of this more complete aerodynamic theory, including cases with shock impingement and near-transonic Mach numbers.

Duke Scholars

Published In

AIAA Journal

DOI

EISSN

1533-385X

ISSN

0001-1452

Publication Date

January 1, 2024

Volume

62

Issue

12

Start / End Page

4631 / 4644

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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Serafim, L. P., & Dowell, E. H. (2024). Dynamically Linearized Time-Domain Approach for Limit-Cycle Oscillation Prediction for an Elastic Panel. AIAA Journal, 62(12), 4631–4644. https://doi.org/10.2514/1.J064394
Serafim, L. P., and E. H. Dowell. “Dynamically Linearized Time-Domain Approach for Limit-Cycle Oscillation Prediction for an Elastic Panel.” AIAA Journal 62, no. 12 (January 1, 2024): 4631–44. https://doi.org/10.2514/1.J064394.
Serafim, L. P., and E. H. Dowell. “Dynamically Linearized Time-Domain Approach for Limit-Cycle Oscillation Prediction for an Elastic Panel.” AIAA Journal, vol. 62, no. 12, Jan. 2024, pp. 4631–44. Scopus, doi:10.2514/1.J064394.
Serafim LP, Dowell EH. Dynamically Linearized Time-Domain Approach for Limit-Cycle Oscillation Prediction for an Elastic Panel. AIAA Journal. 2024 Jan 1;62(12):4631–4644.

Published In

AIAA Journal

DOI

EISSN

1533-385X

ISSN

0001-1452

Publication Date

January 1, 2024

Volume

62

Issue

12

Start / End Page

4631 / 4644

Related Subject Headings

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