Numerical Simulations of Nonlinear Post-Critical Vibrations of an Airfoil After Flutter Instability

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F11%3A00361340" target="_blank" >RIV/61388998:_____/11:00361340 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21220/11:00309582
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Numerical Simulations of Nonlinear Post-Critical Vibrations of an Airfoil After Flutter Instability
Original language description
The contribution deals with the numerical simulation of the flutter of airfoil with three degrees of freedom for rotation around an elastic axis, oscillation in the vertical direction and rotation of a flap. The FE solution of (2-D) incompressible Navier-Stokes equations is coupled with nonlinear equations describing the airfoil vibrations with large amplitudes taking into account the nonlinear mass matrix. The time-dependent computational domain and a moving grid are treated by the ALE method. The developed method was successfully tested by the flutter computation using NASTRAN program and then applied to the simulations of the post flutter regimes in time domain showing Limit Cycle Oscillations (LCO) for the airfoil NACA 0012 respecting the air spacebetween the flap and the main airfoil.
Czech name
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Czech description
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Project
<a href="/en/project/GAP101%2F11%2F0207" target="_blank" >GAP101/11/0207: Coupled problems of fluid and solid mechanics - nonlinear aeroelasticity</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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