CFD prediction of steady and unsteady upwind sail aerodynamics
Artikel i vetenskaplig tidskrift, 2017

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.

RANS

CFD

steady

unsteady

Sail aerodynamics

Författare

Adam Persson

Chalmers, Sjöfart och marin teknik

Lars Larsson

Chalmers, Sjöfart och marin teknik, Marin teknik

Ocean Engineering

0029-8018 (ISSN)

Vol. 141 543-554

Styrkeområden

Transport

Infrastruktur

C3SE (Chalmers Centre for Computational Science and Engineering)

Ämneskategorier

Farkostteknik

Strömningsmekanik och akustik

DOI

10.1016/j.oceaneng.2017.06.039