engleski

Seakeeping characteristics of intact and damaged ship in the Adriatic Sea

In this paper the ship seakeeping characteristics in regular head waves are calculated. The ship response is calculated at defined sea states for the Adriatic Sea in certain frequency range and at different forward speeds. Since after a maritime accident a damaged ship should be often removed from the place where accident occurred seakeeping characteristics of damaged ship are also calculated. The damage is simulated as the flooded tank within midship area. Determination of ship seakeeping characteristics is then based on coupled motions of ship and fluid inside the tank. Calculations are based on the linear potential flow theory and performed using hydrodynamic software (HydroSTAR 2010). Response amplitudes of the ship are presented using transfer functions. Seakeeping characteristics of the intact and damaged ship are compared. In order to compare the calculated results with experimental data from the literature, motion amplitudes of the ship model are also calculated. The obtained results show that response amplitudes of coupled seakeeping and sloshing motions differ slightly from the amplitudes of intact ship, except in case of surge at low incoming wave frequencies.

seakeeping characteristics ; potential flow ; damaged ship ; coupled seakeeping and sloshing ; transfer function

nije evidentirano