In this paper, RANS simulations on added resistances and vertical motions of modified Wigley ship advancing in head waves with a Froude number of 0.2 are presented. The numerical computations are fulfilled by our in-house solver naoe-FOAM-SJTU based on open source package OpenFOAM. Regular wave conditions with a wide range of wave length (0.4<λ/L<1.6) are considered besides the steady calm-water cases. The simulations are compared very well with those using unsteady wave analysis methods. Good agreement with experimental measurement is also observed. It shows that the solver naoe-FOAM-SJTU has good potential to study more complex added resistance issues.

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