The objective of the present study is to investigate the low Reynolds number (LRN) fluid dynamics of two airfoils in pitching oscillations. The airfoils are in a tandem configuration and perform in-phase oscillations. Navier-Stokes (NS) equations with Finite Volume Method (FVM) are used and the instantaneous aerodynamic force coefficients are analyzed. The effect of amplitude of pitching oscillations and Re are investigated on the fluid forces. It is found that the amplitude of pitching oscillations is of primary importance to the fluid forces, affecting them quantitatively and qualitatively. Re is found to be of secondary importance compared to the effects of the amplitude of pitching oscillations. It mainly affects the magnitude of the forces.

Volume Subject Area:
Fluid Flow, Heat Transfer and Thermal Systems
Topics:
Airfoils, Computational fluid dynamics, Unsteady flow, Oscillations, Fluids, Aerodynamics, Finite volume methods, Fluid dynamics, Fluid-dynamic forces, Reynolds number
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 by ASME
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