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Aerodynamic Analysis of a Localized Flexible Airfoil at Low Reynolds Numbers

Aerodynamic Analysis of a Localized Flexible Airfoil at Low Reynolds Numbers
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Year:    2012

Communications in Computational Physics, Vol. 11 (2012), Iss. 4 : pp. 1300–1310

Abstract

A localized flexible airfoil at low Reynolds numbers is modeled and the aerodynamic performance is analyzed numerically. With characteristic based split scheme, a fluid solver for two dimensional incompressible Navier-Stokes equations is developed under the ALE framework, coupled with the theory of shallow arch, which is approximated by Galerkin method. Further, the interactions between the unsteady flow and the shallow arch are studied in detail. In particular, the effect of the self-excited vibration of the structure on aerodynamic performance of the airfoil is investigated deeply at various angles of attack. The results show that the lift-to-drag ratio has been increased greatly compared with the rigid airfoil. Finally, the relationship between the self-excited vibration and the evolution of the flow is analyzed using FFT tools.

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Journal Article Details

Publisher Name:    Global Science Press

Language:    English

DOI:    https://doi.org/10.4208/cicp.070510.150511s

Communications in Computational Physics, Vol. 11 (2012), Iss. 4 : pp. 1300–1310

Published online:    2012-01

AMS Subject Headings:    Global Science Press

Copyright:    COPYRIGHT: © Global Science Press

Pages:    11

Keywords:   

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