Authors: Werner, Sofia; Pistidda, Alessio; Larsson, Lars; Regnström, Björn

Source: Journal of Ship Research, Volume 51, Number 4, December 2007 , pp. 343-356(14)

Publisher: Society of Naval Architects and Marine Engineers (SNAME)

Abstract:

A wind tunnel test of an America's Cup keel model is used for validation of one Reynolds-averaged Navier Stokes (RANS) code and one potential flow/boundary layer code. The effects of grid size, stagnation point anomaly, and turbulence model on the RANS results are discussed. Various setups of the potential code are compared. The ability of both methods to predict forces and trends are shown. The errors of the RANS code are slightly larger than the experimental error, whereas the potential flow/boundary layer results are within the experimental uncertainty, provided that a correct panelization is used. A comparison of the experimental wake flow pattern to the one computed with RANS is presented. The k-ω turbulence model is shown to give the best predictions of the wake.

Keywords: KEEL; WINGLET; AMERICA'S CUP; CFD; VALIDATION; WIND TUNNEL

Document Type: Research article

Publication date: 2007-12-01

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• The Journal of Ship Research is a quarterly publication providing highly technical papers on applied research in hydrodynamics, propulsion, ship motions, structures, and vibrations. While the Journal requires that papers present the results of research that advances ship and ocean science and engineering, most contributions bear directly on other disciplines, such as civil and mechanical engineering, applied mathematics, and numerical analysis. High quality papers are contributed from the U.S., Canada and overseas, with representation from established authorities as well as new researchers.
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