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Hydraulic jump (Smhj)

Definition
The sudden and usually turbulent passage of water from a stage below critical depth (supercritical flow) to a stage above critical depth (subcritical flow) during which the velocity passes from supercritical to subcritical. It represents the limiting conditions of the water surface curve (or profile) wherein it tends to become perpendicular to the stream bed. (Source: AASHTO Glossary)
Broader Term
Fluid mechanics (Smh)
Related Terms (Hierarchical)
Free surface (Smhf)
Friction factor (Smhh)