Calculation of added resistance in waves for KVLCC2 and its modified hull form using RANS-based method

摘要

The present study provides the numerical simulations with the unsteadyReynolds Averaged Navier-Stokes (URANS) methods for theprediction of added resistance performance of hull forms advancingforward in regular waves. Two degrees of freedom motion (pitch andheave) are solved in the non-inertial reference frame in which theeffects of the motions are considered as a body force source term in thegoverning equations. The relative translational and rotational velocitiesaccording to the motions of the hull are imposed at all the far-fieldboundaries. The computation of the added resistance and 2DOFmotions were carried out for KVLCC2 and its modified hull form inwhich bow shape is sharpened with removing the bow-bulb underthirteen different regular head-wave conditions. The computationalresults showed good agreement with the experiments and the modifiedhull form is superior to the original KVLCC2 in added resistanceperformances.