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Prediction of roll hydrodynamics of cylinders fitted with bilge keels with RANS

Xie, J.X. Nan and Vassalos, D. and Lee, B.S. (2007) Prediction of roll hydrodynamics of cylinders fitted with bilge keels with RANS. Journal of Ship Mechanics, 11 (6).

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Abstract

A RANS solver is used to predict roll hydrodynamic coefficients (added inertia moment and damping) of a two-dimensional section with/without bilge keels on the free surface. The viscous flow field disturbed by the forced roll motion is solved in time domain with VOF and two-phases flow approach. The roll hydrodynamic coefficients are derived from time histories of the roll hydrodynamic moments. The results are compared with published model test measurements and a fairly good agreement was found.