Froude number, abbreviated as Fr, a dimensionless number, is the ratio of inertial force to gravitational force. It is used for wave and surface behavior for mixed natural and forced convection.
Froude number calculator
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Froude number formula
| \(\large{ Fr = \frac { v } { \sqrt { g \; h_m } } }\) |
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Where:
| Units |
US |
Metric |
| \(\large{ Fr }\) = Froude number |
\(\large{dimensionless}\) |
| \(\large{ g }\) = gravitational acceleration |
\(\large{ \frac{ft}{sec^2}}\) |
\(\large{ \frac{m}{s^2}}\) |
| \(\large{ h_m }\) = mean depth |
\(\large{ft}\) |
\(\large{m}\) |
| \(\large{ v }\) = velocity of flow |
\(\large{ \frac{ft}{sec}}\) |
\(\large{ \frac{m}{s}}\) |
Solve For:
| \(\large{ g = \frac{ v^2 }{ h_m \; Fr^2 } }\) |
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| \(\large{ h_m = \frac{ v^2 }{ g \; Fr^2 } }\) |
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| \(\large{ v = Fr \; \sqrt{ g \; h_m } }\) |
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