Velocity and Vorticity Distributions Over an Oscillating Airfoil under Compressible Dynamic Stall
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The velocity and vorticity fields around an oscillating airfoil in compressible dynamic stall are reported. Phase averaged, two component laser velocimetry data were obtained at a freestream Mach number of 0.3 and a reduced frequency of 0.05. This is the first set of velocity data available at a high Reynolds number (540,000) under compressible flow conditions and it serves as a good database for development and validation of computer codes. Of particular interest is the formation of a separation bubble, which bursts coincidentally with the formation of the dynamic stall vortex, adding an extra degree of physical complexity to the problem.
AIAA Journal, Vol. 31, No. 6, Jun. 1993, pp. 995-996.
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