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# Froude-Krylov force

The Froude-Krylov force, sometimes also called the Froude-Kriloff force is a hydrodynamical force named after William Froude and Alexei Krylov. The Froude-Krylov force is the force introduced by the unsteady pressure field generated by undisturbed waves. The Froude-Krylov force is together with the diffraction force the total non-viscous forces acting on a floating body in regular waves. The diffraction force is due to the floating body disturbing the waves.

### Additional recommended knowledge

The Froude-Krylov force can be calculated from:

$\vec F_{FK} = - \iint_{S_w} p ~ \vec n ~ ds$

Where Sw is the wetted surface, p the pressure and $\vec n$ the body's normal vector pointing into the water.

## See also

• Response Amplitude Operator

## References

• Faltinsen, O. M. (1990). Sea Loads on Ships and Offshore Structures. [Cambridge University Press]]. ISBN 0-521-45870-6.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Froude-Krylov_force". A list of authors is available in Wikipedia.
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