A Study on Coupling Effect Between Seakeeping and Sloshing for Membrane-Type LNG Carrier

摘要

To evaluate the performance of membrane-type LNG carriers under half-loading conditions, simulation for coupled ship motion and sloshing has been carried out by using a newly developed time domain scheme. The external fluid field was solved by potential theory, while the internal fluid field was solved by a 3D finite difference method. The ship motions in different wave direction and frequencies were calculated. The coupling effect was found to have significant influence on transverse motions, while the longitudinal motions were not influenced. The slosh flow inside tanks was also investigated. Some nonlinear phenomenon at resonance sloshing was also identified and discussed.