Abstract
A finite-volume method is developed for the motion simulation of a sailing boat in oblique waves. The solution procedure for the Navier-Stokes equation is connected with that for the motion equations in three degrees of freedom, that it, pitch, heave and roll motions. The O-H type boundary-fitted coordinate system is employed and the motion of the boat is represented by external forces in the Navier-Stokes equation. A unique technique is to rotate the free-surface in accordance with the pitch and roll motions of the boat. The availability of the present method is demonstrated by the simulation of America's Cup class sailing boat with and without keel and sail.
