7th Canadian Marine Hydromechanics and Structures Conference, 20-21 September 2005, Halifax, N.S., Canada
The three-dimensional trajectory of a small lifeboat in a surgace wave is computed via the methods Lagrangian dynamics. It is assumed that the motion normal to the wave surface is small and can be neglected, i.e. the boat moves along the propagating wave profile. Wave diffraction and reflection are aslo assumed to be negligible. A Stokes' second order wave is used and the wave forces are applied using Morison's equation for a body in accelerated flow. Wind loads are similarly modeled using drag coefficients. The equations are solved numerically for various initial confitions in a typical severe sea state. The model is ecpected to be useful for predicting the motions of small bodies such as bergy bits and lifeboats in waves.
Date de publication
7th Canadian Marine Hydromechanics and Structures Conference [Proceedings].