Froude–Krylov force

In fluid dynamics, 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.

The Froude–Krylov force can be calculated from:

$vec\; F\_\{FK\}\; =\; -\; iint\_\{S\_w\}\; p\; ~\; vec\; n\; ~\; ds,$

where
*$vec\; F\_\{FK\}$ is the Froude–Krylov force,
*$S\_w$ is the wetted surface of the floating body,
*$p$ is the pressure in the undisturbed waves and
*$vec\; n$ the body's normal vector pointing into the water.

See also

:* Response Amplitude Operator

References

:* cite book
last = Faltinsen
first = O. M.
title = Sea Loads on Ships and Offshore Structures
publisher = Cambridge University Press
date = 1990
isbn = 0-521-45870-6