Introduction
This calculation tool is designed to help you quickly and accurately determine the hydraulic depth of a flowing body of water.
Calculation (Froude's Number)
⬇️ Inputs
V1 (m/s)
:5
D1
:3m⬆️ Outputs
Fr1 (1)
:0.92167
Calculation (Hydraulic depth)
⬇️ Inputs
Fr2
:0.92
V2
:5⬆️ Outputs
D2 (1)
:3.011
💬 We'd love your feedback on this template! It takes 1min
Explanation
The Froude number, Fr, is a dimensionless value that describes different flow regimes of open channel flow. The Froude number is a ratio of inertial and gravitational forces.
It's used in fluid dynamics to measure the relative importance of gravity and inertia forces in a flow. The Froude Number can range from 0 to infinity, with 0 representing a flow with no inertia and infinity representing a flow with no gravity.
The Froude number is calculated as the ratio of the inertial force of the flow to the gravitational force of the flow.
Where:
When:
The hydraulic depth can be solved by rearranging the formula to solve for flow depth. This is shown below: