Numerical study of asymmetric keel hydrodynamic performance through advanced CFD

Mylonas, Dimitrios and Turkmen, Serkan and Khorasanchi, Mahdi (2013) Numerical study of asymmetric keel hydrodynamic performance through advanced CFD. In: Third International Conference On Innovation In High Performance Sailing Yachts, 2013-06-26 - 2013-06-28, Cite de la Voile Eric Tabarly.

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Abstract

The hydrodynamics of an asymmetric IACC yacht keel at angle of yaw are presented using simulations performed by advanced computational fluid dynamics using state-of-the-art software. The aim of the paper is to continue working on the improvement of numerical viscous flow predictions for high-performance yachts using Large Eddy Simulation and Detached Eddy Simulation on unstructured grids. Quantitative comparisons of global forces acting on the keel and wake survey are carried out. Qualitative comparisons include flow visualisation, unsteady and separated flow and other features. Star-CCM+ and the trimmed cell method give better forces and wake prediction compared to the unstructured mesh of ANSYS Fluent. Both solvers give good flow visualisation near and far field of the keel.

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