Numerical study on added resistance of ships based on time-domain desingularized-Rankine panel method

Three-dimensional time-domain desingularized-Rankine panel (DRP) method has been developed to compute the added resistance for ships traveling in regular head waves using the near-field and middle-field approaches. To validate the present computational model, different hull forms are adopted, including two Wigley hulls, the S-175 containership and the KVLCC2 tanker. By systematically comparing the present results with the experimental data, it is demonstrated that the near-field and middle-field approaches based on a double-body linearization can accurately predict the added resistance of ships at Fn⩽0.25. The components and distribution of added resistance are compared and discussed. It is found that the maximum contribution on the added resistance comes from the waterline integral, and in long waves it occurs at the most forward part of the waterline. The analyses also confirm that, in intermediate waves and in the near-resonant wavelength of added resistance, the pitch motions have more significant effects on the added resistance than the heave motions. Furthermore, the interaction between the diffraction and the pitch-induced radiation components is the primary contributor to the added resistance in intermediate waves, except from the diffraction component.

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  • English

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  • Accession Number: 01840390
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 28 2022 9:26AM