ABSORBING BOUNDARY-CONDITION FOR FLOATING 2-DIMENSIONAL OBJECTS IN CURRENT AND WAVES

In this paper an absorbing boundary condition for floating two-dimensi onal objects in current and waves is studied. A numerical algorithm ha s been developed, which computes the velocity potential in the physica l time domain, by using an artificial boundary to split the infinite f luid domain into a computational part and a residual part. A special G reen's function has been developed in the residual part. The condition on the artificial boundary is independent of wave frequency, hence no t restricted to harmonic waves. Because of the smaller computational d omain and the independence of frequency, the time to compute the hydro dynamic coefficients of floating objects decreases.