Hydraulics2D

Open Channel Flow: Non-Uniform Flow - Theory & Concepts - Hydraulic Jump

Specific energy, critical controls, momentum function, hydraulic jumps, gradually varied flow equations and profiles, and direct- and standard-step computations.

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Hydraulic Jump Simulator

Discharge per unit width (

q

)5.00 m²/s

Upstream depth (

y_1

)0.50 m

A hydraulic jump requires supercritical approach flow ( $Fr_1>1$ ). The rectangular-channel conjugate-depth equation assumes a horizontal prismatic channel and negligible friction through the short jump region.

Steady jump

Upstream

V₁ = 10.00 m/s

Fr₁ = 4.52

Downstream

y₂ = 2.953 m

Fr₂ = 0.31

Specific-energy loss2.498 m

Energy retained55.4%

Momentum-function check8.9e-16

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Hydraulic Jump Simulator

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