The University of Southampton
University of Southampton Institutional Repository

Aerodynamic of modern square head sails: a comparative study between wind-tunnel experiments and RANS simulations

Aerodynamic of modern square head sails: a comparative study between wind-tunnel experiments and RANS simulations
Aerodynamic of modern square head sails: a comparative study between wind-tunnel experiments and RANS simulations
A commercial Reynolds Average Navier Stokes code (ANSYS CFX10) is used here to compare with wind-tunnel experiments of a modern ORMA60’ rig in upwind condition. Two mainsails of different tip chord length and a head sail are tested. The flying shapes are acquired by a digital camera to feed the numerical model with the same geometry has used in the experiments. The results of the study underline the need for an extreme accuracy in the acquisition of the flying shapes. It is also noted that modelling the hull in addition to the mast and sails improve the prediction significantly. Presence of a hull tends to tangle the tip vortices generated by the sails’ foot and affect the flow up to the middle of the mast, whereby increasing both lift and drag. Scaling effects are finally discussed.
yacht, sails, simulations, square head
107-114
Querard, A.B.G.
bb00a9a6-d9b0-4eee-ad4b-4f57d0d9927d
Wilson, P.A.
8307fa11-5d5e-47f6-9961-9d43767afa00
Royal Institution of Naval Architects
Querard, A.B.G.
bb00a9a6-d9b0-4eee-ad4b-4f57d0d9927d
Wilson, P.A.
8307fa11-5d5e-47f6-9961-9d43767afa00

Querard, A.B.G. and Wilson, P.A. , Royal Institution of Naval Architects (2007) Aerodynamic of modern square head sails: a comparative study between wind-tunnel experiments and RANS simulations. The Modern Yacht, 2007, 107-114. (doi:10.3940/rina.tmy.2007.1).

Record type: Article

Abstract

A commercial Reynolds Average Navier Stokes code (ANSYS CFX10) is used here to compare with wind-tunnel experiments of a modern ORMA60’ rig in upwind condition. Two mainsails of different tip chord length and a head sail are tested. The flying shapes are acquired by a digital camera to feed the numerical model with the same geometry has used in the experiments. The results of the study underline the need for an extreme accuracy in the acquisition of the flying shapes. It is also noted that modelling the hull in addition to the mast and sails improve the prediction significantly. Presence of a hull tends to tangle the tip vortices generated by the sails’ foot and affect the flow up to the middle of the mast, whereby increasing both lift and drag. Scaling effects are finally discussed.

Text
RINA_Modern_Yacht_-_QUERARD-WILSON.pdf - Other
Restricted to Repository staff only
Request a copy

More information

Submitted date: 10 August 2007
Published date: 11 October 2007
Keywords: yacht, sails, simulations, square head
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 49314
URI: http://eprints.soton.ac.uk/id/eprint/49314
PURE UUID: d96276c6-8b07-443e-9784-30a07716ed0a
ORCID for P.A. Wilson: ORCID iD orcid.org/0000-0002-6939-682X

Catalogue record

Date deposited: 30 Oct 2007
Last modified: 18 Feb 2021 16:34

Export record

Altmetrics

Contributors

Author: A.B.G. Querard
Author: P.A. Wilson ORCID iD
Corporate Author: Royal Institution of Naval Architects

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×