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← ScienceWhich outcome occurs when a subsonic flow regime transitions past Reynolds number threshold in an airfoil venturi?
A)Turbulent boundary layer drag increases sharply✓
B)Lift coefficient elevates proportionally and linearly
C)Potential flow model's accuracy rises
D)Static pressure distribution stays uniform
💡 Explanation
Turbulent flow past Reynolds number causes increased drag, because flow separation induces a larger pressure differential; therefore aerodynamic performance decreases rather than increases since laminar flow no longer effectively clings to venturi surfaces.
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