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← ScienceWhich phenomenon causes increased pipe drag when exceeding Reynolds limit?
A)Onset of turbulent flow regime✓
B)Laminar boundary layer separation
C)Increased fluid surface tension
D)Decreased fluid wall adhesion
💡 Explanation
Turbulence increases drag in pipe flow because momentum transfer becomes chaotic and disorderly during the onset of turbulent flow regime, rather than orderly laminar flow; therefore drag increases because turbulent eddies dissipate energy which overcomes limited viscosity forces.
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