Recent development in Navier-Stokes solver technology and meshing techniques have furthered the ability of naval architects and hydrodynamicists to analyze intricate flow simulations of high performance racing yachts. The effect of this development has contributed to enlarging the bounds of the design space aiding in comprehension and optimization of high performance yachts. This paper will present selected examples from a research study based around tow tank tests and CFD simulations of a canonical high-performance racing yacht. The geometry configurations studied were fully appended with rudders, keel/bulb and a dagger-board. Simulations were performed with various operating conditions covering both lifting and non-lifting flow regimes. Topics covered will address (i) validation against tow tank measurements; (ii) efficient performance of large-scale computations; and (iii) numerical issues related to (a) mesh generation, (b) solution, discretization, and free surface capturing algorithms, (c) turbulence modelling, (d) rigid body dynamics and sail force models.

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