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← ScienceWhich outcome results when a fluid's Reynolds number exceeds design limits in subsonic airfoils?
A)Increased form drag and stall✓
B)Improved laminar flow adherence
C)Reduced boundary layer separation
D)Decreased airfoil skin friction
💡 Explanation
Increased form drag and stall arises because exceeding design Reynolds number generates turbulent flow. This induces boundary layer separation, a phenomenon termed 'turbulent transition,' therefore greatly changing form drag, rather than improving predicted performance in any way under this condition.
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