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← ScienceWhich flow regime results when Reynolds number increases significantly in aerofoils?
A)Laminar separation bubble formation increases drag
B)Increased boundary layer thickness decreases lift
C)Transition to turbulence begins closer leading✓
D)Pressure gradients cause total flow stagnation
💡 Explanation
Transition to turbulence occurs closer to the leading edge because an increased Reynolds number amplifies instabilities through inertial forces overcoming viscous damping. Therefore, turbulence arises faster, rather than a stable layer, because the ratio promotes disruption before complete stabilization.
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