aerodynamics - Is there ground effect flying below an infinite 2D plane as opposed to above one? - Aviation Stack Exchange

People talk about wing tip vortices and say things like the ground acts as an aerodynamic mirror. What (if any) difference would there be for a wing flying underneath a 2D plane? As in the picture

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aerodynamics - What is the difference between ground effect for an infinite wing and for a finite wing? - Aviation Stack Exchange

aerodynamics - What is the difference between ground effect for an infinite wing and for a finite wing? - Aviation Stack Exchange

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aerodynamics - Can we borrow Formula One's ground effect for airplanes? - Aviation Stack Exchange

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aerodynamics - What is the difference between ground effect for an infinite wing and for a finite wing? - Aviation Stack Exchange

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