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← ScienceWhich mechanism causes increased drag on hydrofoil craft?
A)Increased boundary layer viscous dissipation✓
B)Elevated adverse pressure gradient effects
C)Suppressed secondary flow velocities
D)Reduced turbulent kinetic energy transfer
💡 Explanation
Increased viscous drag results because a thicker boundary layer with higher shear increases momentum dissipation; the mechanism here is viscous dissipation. Therefore, energy lost into kinetic energy increases drag, rather than the effects of pressure alone.
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