Hydraulic Jump Depth Calculator
Calculate conjugate depths and energy loss in hydraulic jumps for open channel flow
About this calculator
The Hydraulic Jump Depth Calculator determines conjugate depths and energy loss in hydraulic jumps for open channel flow systems. This tool is essential for hydraulic engineers designing spillways, stilling basins, and channel transitions where supercritical flow converts to subcritical flow. By calculating these parameters, engineers can optimize energy dissipation structures, prevent erosion downstream of hydraulic structures, and ensure proper flow control in water conveyance systems.
How to use
Enter the initial flow depth, flow velocity or discharge, and channel width into the calculator. The tool will compute the conjugate depth after the hydraulic jump and calculate the energy loss during the transition. Review the results to understand the flow characteristics and energy dissipation for your hydraulic design.
Frequently asked questions
What is a hydraulic jump?
A hydraulic jump is a phenomenon where high-velocity shallow flow transitions to low-velocity deep flow, typically occurring when supercritical flow encounters downstream conditions forcing subcritical flow.
Why are conjugate depths important?
Conjugate depths represent the flow depths before and after a hydraulic jump. They're crucial for designing energy dissipation structures and determining required basin dimensions.
When do hydraulic jumps occur naturally?
Hydraulic jumps naturally occur downstream of gates, weirs, spillways, or wherever supercritical flow encounters obstacles or changes in channel slope that force subcritical conditions.