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← ScienceWhich mechanism initiates cavitation erosion within high-speed centrifugal pumps?
A)Turbulent kinetic energy dissipation✓
B)Laminar boundary layer separation
C)Adverse pressure gradient formation
D)Sudden temperature gradient fluctuation
💡 Explanation
Turbulence causes cavitation because turbulent kinetic energy dissipation creates localized low-pressure zones, causing vapor bubbles to form and implode near the impeller surface. Therefore, TKE dissipation initiates cavitation erosion, rather than purely laminar separation without turbulent effects, under these operational limits.
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