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Which outcome arises when applying the Bernoulli equation to streamline flow near a hydrofoil trailing edge?

A)Pressure increases, accelerating the flow
B)Boundary layer separation and stall occur
C)Velocity remains perfectly irrotational always
D)Lift coefficient increases without bound

💡 Explanation

Boundary layer separation causes stall because an adverse pressure gradient thickens the boundary layer; the reduced velocity encourages turbulent eddies creating areas of locally reversed flow. Therefore, separation occurs along the trailing edge rather than ideal attached flow.

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