Abstract

Numerous studies have focused on Computational Fluid Dynamics (CFD) Unsteady Reynolds-Averaged Navier–Stokes (URANS) maneuvering simulations of benchmark ships such as the David Taylor Model Basin (DTMB) 5415 model. However, the availability of hydrodynamic derivatives obtained from verified and validated simulations at Froude numbers (Fr) of 0.41 remains limited. In this study, CFD-URANS oblique towing simulations are conducted for the DTMB 5415 benchmark hull at Fr = 0.41 and Fr = 0.28 using STAR-CCM+. Verification and validation are performed according to ITTC guidelines for Fr = 0.41 and a drift angle of 10 degrees. The validation criterion is satisfied for the longitudinal force, side force, and yawing moment, with validation uncertainties of 13.5%, 2%, and 4%, respectively. The resulting forces and moments are fitted to derive a partial set of hydrodynamic derivatives. The CFD results are compared with SIMMAN workshop (2008) Experimental Fluid Dynamics (EFD) data, showing higher prediction accuracy for linear derivatives. At Fr = 0.41, the relative errors of Y’V and N’V are approximately 3% and 4%, while at Fr = 0.28, they are approximately 2% and 5%. Nonlinear components exhibit discrepancies exceeding 15%. Hydrodynamic coefficients show different dependencies on Fr, consistent with previous studies.

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