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Which consequence results when the Reynolds number exceeds a critical threshold for a hydrofoil?

A)Onset of boundary layer separation
B)Increased hydrodynamic lubrication efficiency
C)Laminar flow profile stabilization
D)Reduced skin friction drag coefficient

💡 Explanation

Boundary layer separation occurs as Reynolds number increases because inertial forces dominate, enhancing the creation of turbulent eddies in the mechanism of increased adverse pressure gradient along hydrofoil’s surface; therefore flow reverses, rather than remaining attached, leading to decreased lift.

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