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The Hydraulic Jump
Inside this lesson
- Describe a hydraulic jump and identify the initial (supercritical) and sequent (subcritical) depths
- Explain why the jump must be analyzed with momentum, not Bernoulli
- Apply the sequent-depth relation y_2/y_1 = ½(√(1+8Fr_1²)−1) for a rectangular channel
- Compute the energy dissipated across the jump, ΔE = (y_2−y_1)³/(4y_1y_2)
- Explain why hydraulic jumps are induced in stilling basins below spillways
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Educational content covering topics typical of a first- and second-year mechanical engineering curriculum. Not a substitute for accredited coursework, and not suitable for real fluid-system design without review by a licensed professional engineer.