The Gurney Flap enhances lift by altering the trailing edge Kutta condition and the effective camber. The counter-rotating vortex pair generated behind the flap modifies the trailing edge stagnation point and increases circulation and lift.
Post-processor: ParaView (Surface LIC)
Trailing edge streamline pattern of Wells turbine without Gurney flap
Trailing edge streamline pattern of Wells turbine with Gurney flap
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