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← ScienceWhich outcome reduces hydraulic jump formation when Froude number nears one?
A)Decreased channel bed roughness✓
B)Increased fluid kinematic viscosity
C)Reduced upstream flow velocity
D)Enhanced outlet hydraulic control
💡 Explanation
Lowering the bed roughness reduces energy dissipation via friction, encouraging subcritical flow; this limits jump formation because the required energy loss doesn't materialize. Therefore, bed smoothing reduces the jump rather than increasing viscosity, speed, or altering outlet restriction.
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