This FLI animation shows the pressure contours during the interaction of
vortex with an airfoil. The gray color represents values close to the free-stream
pressure. The blue shades indicate a lower pressure, and yellow and red
shades are higher values. The airfoil has a NACA23012 profile. The vortex
is clock-wise rotating. The free-stream Mach-number is Ma = 0.8.
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