Insert the information in the form and the calculator will determine the froude number.


What is the froude number?


The froude number is a dimensionless number and basicaly it is the ratio of the flow inertia to the external field.


How to calculate froude number?


To calculate froude number you should use the following formula:
Fr = v / √(g * d)
where:
Fr = froude number
v = flow velocity
g = gravitational acceleration which is equal to 9.80665
d = mean depth


Why use froude number?


The froude number is used in order to delineate the boundry between laminar and turbulent flow conditions in open channels.


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