Dynamic Lift and Vortex Breakdown during an Unsteady Flow over a Pitching Airfoil
Keywords:unsteady aerodynamics, dynamic lift, vortex, pitching, airfoil, NACA 0012, CFD
Computational fluid dynamics techniques are used to give a detailed insight into unsteady phenomena taking place in the vicinity of a pitching airfoil. The vortex formation and breakdown are analyzed using the time history of pressure distribution, vorticity and injected massless particle trajectories. Different cases of flows are modeled to determine the effect of reduced frequency on unsteady lift. Finally, a comparison of lift coefficients for steady and unsteady cases is provided.
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