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← ScienceWhich outcome occurs upstream of a marine propeller at high relative velocity?
A)Increased cavitation erosion risk✓
B)Reduced boundary layer separation
C)Laminar flow field stabilization
D)Increased thrust without efficiency loss
💡 Explanation
Increased cavitation arises near marine propellers experiencing high velocities due to turbulence; this reduces local pressure below water's vapor pressure, leading to bubble formation and collapse resulting in material erosion because collapse events are highly energetic, resulting harmful pitting, therefore cavitation erosion is promoted rather than suppressed, unlike more benign flow characteristics.
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