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Modelling multiple yacht sailing interactions between upwind sailing yachts

Record type: Article

An approach for enhancing the realism of yacht fleet race simulations based on a lifting line method is developed. The wake of an upwind sailing yacht is represented as a single heeled horseshoe vortex and image system. At each time step, changes in vortex strength are convected into the wake as a pair of vortex line elements. These subsequently move in accordance with the local wind, the self-induced velocity and the velocity induced by the presence of the wakes of other yachts. In addition, the lifting line model has a model for the viscous wake due to the drag associated with the yacht and its sails superimposed on it. A synthesis of sail yacht wake representations based on detailed 3D Reynolds-averaged Navier–Stokes computational fluid dynamics calculations with wind tunnel test results is used to capture the initial strength of the combined main-jib vortex system and its vertical height. The implementation of the lifting line algorithm within Robo-Race, a real-time yacht race strategy analysis tool, is described. Two upwind race interaction case studies are presented, and these show that the newly implemented wake model makes an important contribution to enhancing the realism of the sailing simulation.

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Citation

Spenkuch, Thomas, Turnock, Stephen R., Scarponi, Matteo and Shenoi, R. Ajit (2011) Modelling multiple yacht sailing interactions between upwind sailing yachts Journal of Marine Science and Technology, 16, (2), pp. 115-128. (doi:10.1007/s00773-010-0115-9).

More information

Published date: 2011
Keywords: cfd, sailing race simulation, yacht interaction
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 178977
URI: http://eprints.soton.ac.uk/id/eprint/178977
ISSN: 0948-4280
PURE UUID: d5d3b9cf-83b2-4e34-b43e-4c73f9971ecb
ORCID for Stephen R. Turnock: ORCID iD orcid.org/0000-0001-6288-0400

Catalogue record

Date deposited: 08 Apr 2011 13:18
Last modified: 18 Jul 2017 12:03

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Contributors

Author: Thomas Spenkuch
Author: Matteo Scarponi
Author: R. Ajit Shenoi

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