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CFD prediction of steady and unsteady upwind sail aerodynamics

Adam Persson (Institutionen för sjöfart och marin teknik) ; Lars Larsson (Institutionen för sjöfart och marin teknik, Marin teknik)
Ocean Engineering (0029-8018). Vol. 141 (2017), p. 543-554.
[Artikel, refereegranskad vetenskaplig]

In this paper, RANS CFD simulations of steady and unsteady upwind sail aerodynamics are verified and validated against wind tunnel experiments previously performed at Politecnico di Milano. Experimental data is presented, and the experimental results are analysed to estimate repeatability. Blockage effects caused by tunnel boundary layers and measurement equipment are estimated using detailed CFD simulations, allowing such effects to be accounted for. A verification procedure is performed, resulting in very low numerical uncertainties. The force predictions are then validated for both steady and unsteady conditions. The steady results show very good agreement, with a maximum error of 3.1%. For the unsteady conditions, good agreement is found for the force mean values, whilst the prediction of force amplitudes is less satisfactory.

Nyckelord: Sail aerodynamics, steady, unsteady, CFD, RANS



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Denna post skapades 2017-09-03. Senast ändrad 2017-09-05.
CPL Pubid: 251590

 

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Institutioner (Chalmers)

Institutionen för sjöfart och marin teknik (2005-2017)
Institutionen för sjöfart och marin teknik, Marin teknik (2015-2017)

Ämnesområden

Transport
Farkostteknik
Strömningsmekanik

Chalmers infrastruktur

C3SE/SNIC (Chalmers Centre for Computational Science and Engineering)