Turbulent flow can actually reduce drag sometimes. The greater kinetic energy of turbulent air means that it follows boundaries for longer, and this can delay separation. This helps in getting the flow to go around objects laminar may not.
However to make vortices, you just use vortex generators, no need for complex devices like this. And laminar flow in fact makes worse vortices than turbulent, and nearly all vortices are turbulent flow anyway.
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Jason Moller
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