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← ScienceWhich outcome occurs when lubricating oil flow through a bearing shifts above a critical Reynolds number?
A)Increased heat generation and wear✓
B)Reduced frictional coefficient marginally
C)Improved laminar regions locally
D)Decreased oil viscosity significantly
💡 Explanation
Turbulent flow arises because, above the critical Reynolds number, inertial forces overcome viscous forces, triggering the transition. This results in increased energy dissipation via chaotic motion, therefore more frictional heat and faster wear, rather than improved lubrication because streamlines breakup.
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