Numerical Study on Ship's Heading Stability Based on Over-set Grid
Based on the Over-setgrid and URANS viscous numerical simulation method,the directional stability of the standard ship model KVLCC2 in bare hull condition is pre-dicted.The numerical computations in this study were performed on the STAR-CCM+,using the over-setgrid and trimmed mesh.According to the SIMMAN2014,the KVLCC2 in oblique motion and pure yaw motion were numerical simulated,the time histories of lat-eral force and yawing moment were obtained.According to the maneuvering mathematical model,the hydrodynamic derivatives were obtained and course stability index was calculat-ed.All numerical results were in good agreement with model test data,which indicated that the reliability of the current approach for predicting directional stability.
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