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← ScienceWhich behavior change arises where pipe flow viscosity decreases under lowered temperature?
A)Elevated pressure drop emerges
B)Turbulent transition zone shortens✓
C)Flow profile steepness reduces
D)Cavitation risk markedly decreases
💡 Explanation
Decreasing a fluid's viscosity encourages turbulence via increased Reynolds number; laminar flow is less stable. Less viscosity means Kinetic forces dominate because viscous damping reduces, therefore turbulent transition shortens rather than lengthens as it would if viscosity increased.
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