Froude Number

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Froude Number (symbol N_Fr) </dt>
The nondimensional ratio of the inertial force to the force of gravity for a given fluid flow; the reciprocal of the Reech number. It may be given as

'N_Fr = v² / lg'where v is a

characteristic velocity; l a characteristic length; and g is the acceleration of gravity, or it may be given as the square root of this number. </dd>

References

This article is based on NASA's Dictionary of Technical Terms for Aerospace Use