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Which consequence results when frictional effects deviate airflow calculations from Euler's equation?

A)Entropy decreases within laminar streamlines
B)Boundary layer separation is enhanced
C)Navier-Stokes solutions become time-invariant
D)Fluid viscosity asymptotically approaches zero

💡 Explanation

Boundary layer separation increases fluid drag due to viscous forces overcoming momentum near the surface; momentum dissipation occurs because the adverse pressure gradients grow, enabling turbulent backflow rather than remaining attached, and so delaying stall events instead.

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