HYDRODYNAMICS PERFORMANCE PREDICTION OF A FULL-SCALE SHIP

Abstract

Traditionally, ship hydrodynamic performances are predicted by extrapolating the model scale measurements or numerical results to full scale. Recently, scientific publications have highlighted the importance of ship scale numerical simulation and its validation. CFD may be used to determine the main reasons for the poor performance of vessels in operation and to evaluate the efficiency of energy-saving solutions that enhance the vessel's hydrodynamics and aerodynamics. Lloyd’s Register (LR) held the world's first workshop dedicated to ship full-scale hydrodynamic performance predictions, where the industry has published comprehensive measurements obtained during the sea trials to offer the community the chance to validate the CFD solvers for full-scale computations. This paper focuses on the numerical investigation of the full-scale general cargo vessel REGAL. NUMECA/Fine Marine commercial code based on the RANS-VOF solver has been used to evaluate the flow field around the hull. Four speeds were considered for this investigation: 8, 10, 12, and 14 knots, and the simulation conditions, identical to the sea trials records, were also taken into consideration. The simulation results were compared to the data provided by LR in 2015 in the workshop proceeding.