It has previously been shown that, at high Strouhal numbers, oscillating airfoils can produce
deflected jets that can create very high lift-coefficients for otherwise symmetric scenarios.
These deflected jets form through pairing of the trailing-edge vortices to create asymmetric
vortex couples that self-propel at an angle to the freestream, resulting in an asymmetric flow
field and non-zero lift. In this paper results are presented that indicate these high-lift
deflected jets cannot form for finite wings. Instead of the straight vortex tubes that pair and …