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← ScienceWhich process reduces efficiency in a pipeline carrying crude oil when the Reynolds number surges past a critical threshold?
A)Onset of turbulent flow✓
B)Increased laminar sublayer thickness
C)Decreased entry length effects
D)Reduced form drag coefficient
💡 Explanation
Surging past a critical Reynolds number leads to the onset of turbulent flow, which increases energy dissipation because momentum diffusion increases through the fluid medium. Therefore, efficiency drops due to increased frictional losses, rather than streamlined laminar flow or reduced drag.
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