Froude Number
Froude number, abbreviated as Fr, a dimensionless number, is the ratio of inertial force to gravitational forces acting on a fluid flow. It is used for wave and surface behavior for mixed natural and forced convection. It is used used in fluid dynamics to characterize the flow regime and behavior of fluids, particularly in open channel flow or flow around objects.
The Froude number is important in various applications, such as open channel hydraulics, river engineering, and ship hydrodynamics. It helps in understanding the behavior of flow, determining flow patterns, and predicting the occurrence of hydraulic phenomena.
Froude number formula |
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\( Fr = v \;/\; \sqrt { g \; h_m } \) (Froude Number) \( v = Fr \; \sqrt { g \; h_m } \) \( g = v^2 \;/\; h_m \; Fr^2 \) \( h_m = v^2 \;/\; g \; Fr^2 \) |
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Solve for Fr
Solve for v
Solve for g
Solve for hm
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Symbol | English | Metric |
\( Fr \) = Froude number | \(dimensionless\) | |
\( v \) = velocity of flow | \(ft\;/\;sec\) | \(m\;/\;s\) |
\( g \) = gravitational acceleration | \(ft\;/\;sec^2\) | \(m\;/\;s^2\) |
\( h_m \) = mean depth | \(ft\) | \(m\) |
Tags: Flow Gravity Force Open Channel