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← ScienceWhich mechanism causes increased pipe wall shear stress when fluid flow increases?
A)Decreased fluid boundary layer thickness✓
B)Increased fluid dynamic viscosity
C)Reduced fluid turbulent kinetic energy
D)Decreased viscous sublayer formation
💡 Explanation
Increased flow results in smaller boundary layer owing to increased energy through the stream causing decreased thickness explained by the Prandtl boundary layer equation; therefore stress increases, rather than decreasing because a thicker layer decreases shear.
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