Nonlinear Aerodynamic Effects on Transonic LCO Amplitude of a Supercritical Airfoil

  • Lei Tang
  • D. D. Liu
  • P. C. Chen
Conference paper
Part of the Fluid Mechanics and its Applications book series (FMIA, volume 73)


A CFD time-marching method, CFL3D v6, is employed to investigate the influences of viscosity, initial airfoil position, and initial perturbation on the amplitudes of the transonic limit cycle oscillations (LCO) of a supercritical airfoil. As expected, stronger aerodynamic nonlinearity leads to smaller LCO amplitudes, even a damped solution while weaker aerodynamic nonlinearity incurs larger LCO amplitudes, even a divergent solution.

Key words

transonic limit cycle oscillations supercritical airfoil CFD 


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Copyright information

© Springer Science+Business Media Dordrecht 2003

Authors and Affiliations

  • Lei Tang
    • 1
  • D. D. Liu
    • 1
  • P. C. Chen
    • 1
  1. 1.ZONA Technology, Inc.ScottsdaleUSA

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