Abstract
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.
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Tang, L., Liu, D.D., Chen, P.C. (2003). Nonlinear Aerodynamic Effects on Transonic LCO Amplitude of a Supercritical Airfoil. In: Sobieczky, H. (eds) IUTAM Symposium Transsonicum IV. Fluid Mechanics and its Applications, vol 73. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0017-8_9
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DOI: https://doi.org/10.1007/978-94-010-0017-8_9
Publisher Name: Springer, Dordrecht
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