Required Boundary Conditions
The velocity potential on the internal surface and all points inside V (or on the lower surface S) is 0.
The Doublet Strength is:
The velocity potential on the outer surface is normal to the surface and is equal to the freestream velocity.
These basic equations are satisfied when the geometry is a 'watertight' geometry. If it is watertight, it is a well-posed problem. If it is not, it is an ill-posed problem.
Read more about this topic: Aerodynamic Potential Flow Code
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