Simulations of airfoil limit-cycle oscillations at transitional Reynolds numbers

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TypeArticle
Proceedings title50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition
Conference50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, 9 January 2012 through 12 January 2012, Nashville, TN
Article numberAIAA 2012-0041
SubjectAeroelastic oscillations; Boundary-layer separation; Incompressible CFD; Limit cycle oscillations; Low Reynolds number; Low-amplitude; Static conditions; Structural response; Two-degree-of-freedom; Aeroelasticity; Aerospace engineering; Computer simulation; Exhibitions; Reynolds number; Airfoils
AbstractStructural response models addressing one-degree-of-freedom (1DOF) and two-degree-of-freedom (2DOF) aeroelastic oscillations were coupled with an in-house incompressible CFD code to perform large-eddy-based simulations (LES) for flows past rigid airfoils in free-to-rotate and free-to-rotate-and-heave conditions at low Reynolds numbers. As observed in experiments, the numerical simulations confirmed the presence of the self-sustained low-amplitude limit-cycle oscillations (LCOs) of the airfoils. It is understood that this behavior in the transitional Reynolds number regime results from the unsteadiness of the laminar boundary layer separation and its delayed recovery when compared to the corresponding static conditions. © 2012 by NRC and RMC.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); Aerospace (AERO-AERO)
Peer reviewedYes
NPARC number21269234
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Record identifier9e2a706c-d93c-4328-ad82-8b1ca46f6188
Record created2013-12-12
Record modified2016-05-09
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