Comparative Study on Ship Hydrodynamics Based on Neumann-Kelvin and Double-Body Linearizations in Time-Domain Analysis

摘要

In this study, comparisons between Neumann-Kelvin and double-body linearizations, which are widely applied to a ship motion problem, are carried out on wave excitation forces, hydrodynamic coefficients, motion responses and added resistances. As a method for a solution, a higher-order Rankine panel method is applied in time domain. Computational results obtained by the 2 linearization schemes are compared with experimental data and other computational results on Wigley hulls, the Series 60 hull and S175 containership. Differences between the computational results obtained by the 2 linearization schemes are observed, and the pros and cons are discussed.