Computation of aerodynamic coefficients of ships using FINE/Marine: initial evaluation
Van Hoydonck, W.; Delefortrie, G.; Peeters, P.; Mostaert, F. (2015). Computation of aerodynamic coefficients of ships using FINE/Marine: initial evaluation. Version 3.0. WL Rapporten, 12_106. Flanders Hydraulics Research: Antwerp. 47 + 9 p. appendices pp.
Part of: WL Rapporten. Waterbouwkundig Laboratorium: Antwerpen. , more
In the ship simulators in use at Flanders Hydraulics Research (FHR), steady wind loads are accounted for using coefficient tables from which the longitudinal load, the lateral load and the yawing moment as a function of the relative wind direction is computed. The data in these tables originates from literature, mostly based on wind tunnel investigations. The Computational Fluid Dynamics (CFD) software package FINE/Marine is used for the computation of wind coefficients. Wind tunnel tests executed in Denmark (Andersen, 2007) using a model container ship is used as reference. One ship configuration (without containers on deck) with three relative wind angles (0 degrees, 45 degrees and 90 degrees) are used to evaluate the CFD package and determine the influence of various settings (turbulence closure model, inlet boundary conditions (uniform or atmospheric boundary layer velocity profile), outlet boundary conditions, initial conditions, boundary layer resolution with or without wall functions) on the results. The overall conclusion is that FINE/Marine can be used to compute wind coefficients for ships, but the large amount of computations required to fill a complete coefficient table means that more research is required to optimize the computations.
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