VIOLA, I.M; BOT, Patrick; RIOTTE, M.

doi:10.1002/fld.3780

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VIOLA, I.M
Newcastle University [Newcastle]

BOT, Patrick
Institut de Recherche de l'Ecole Navale [IRENAV]

RIOTTE, M.
Newcastle University [Newcastle]

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International Journal for Numerical Methods in Fluids. 2013-08, vol. 72, n° 11, p. 1146-1164

Wiley

Résumé en anglais

A verification and validation procedure for yacht sail aerodynamics is presented. Guidelines and an example of application are provided. The grid uncertainty for the aerodynamic lift, drag and pressure distributions for the sails is computed. The pressures are validated against experimental measurements, showing that the validation procedure may allow the identification of modelling errors. Lift, drag and L2 norm of the pressures were computed with uncertainties of the order of 1%. Convergence uncertainty and round-off uncertainty are several orders of magnitude smaller than the grid uncertainty. The uncertainty due to the dimension of the computational domain is computed for a flat plate at incidence and is found to be significant compared with the other uncertainties. Finally, it is shown how the probability that the ranking between different geometries is correct can be estimated knowing the uncertainty in the computation of the value used to rank. Copyright © 2013 John Wiley & Sons, Ltd.< Réduire

Mots clés en anglais

computational fluid dynamics (CFD)

Reynolds-averaged Navier-Stokes (RANS)

sail aerodynamics

verification and validation (V&V)

yacht

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On the Uncertainty of CFD in Sail Aerodynamics

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