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← ScienceWhich outcome occurs when a fluid's higher Reynolds number reaches fully developed rough-pipe flow?
A)Friction factor becomes Reynolds-number-dependent
B)Laminar sublayer thickness significantly increases
C)Head loss becomes independent of viscosity✓
D)Fluid inertia has less impact significantly
💡 Explanation
Head loss becomes independent of viscosity because at high Reynolds numbers inertial forces dominate, initiating turbulent flow, resulting in the inertial forces dominating and the kinematic viscosity becoming insignificant. Head loss calculation relies on wall roughness rather than viscosity therefore it is the right answer.
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