Experimental and Numerical Study of a Pitch Oscillating Airfoil

The unsteady flow field in the vicinity of a pitch oscillating SD7037 airfoil at a Reynolds number of 40,000 was investigated experimentally and numerically. The airfoil undergoes dynamic stall phenomena associated with a highly separated unsteady boundary layer and energetic vortex formation and shedding. The experimental part of the current study employed particle image velocimetry (PIV). The PIV results were based on averaging 500 images for each angle of attack. A computational fluid dynamics (CFD) simulation was performed for the same flow field with ANSYS Fluent 12, simulating laminar-turbulent transition using the transition SST method. Reasonable agreement was observed between the PIV and CFD methods in capturing both qualitative and quantitative flow characteristics. The project is sponsored by NSERC .

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