The use of shell elements to capture sail wrinkles, and their influence on aerodynamic loads
The use of shell elements to capture sail wrinkles, and their influence on aerodynamic loads
Sails are an example of fluid structure interaction (FSI), where the structural deformation, as well as the fluid dynamics, needs to be taken into account in order to analyse performances. The emphasis of this paper is placed on developing techniques that can study the dynamic behaviour of sails. This is necessary, especially when approaching downwind sails, where the nature of the flow is subjected to large separations and unsteady phenomena such as vortex shedding. Preliminary studies are presented about bluff body type flows, representative of spinnaker flows, and about typical Gennaker sections. From a structural perspective, the fabric is modelled with shells, rather than membranes. This approach shows considerable advantages, since these will capture buckling related phenomena such as wrinkling, which have to be treated with additional models for membrane based analysis. It is found that the unsteadiness and the presence of wrinkles can significantly alter the sail force
Trimarchi, Daniele
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Turnock, S.R.
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Taunton, D.J.
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Chapelle, Dominique
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1 July 2010
Trimarchi, Daniele
9404450f-9c6c-4512-9adb-4eff0420ea6d
Turnock, S.R.
d6442f5c-d9af-4fdb-8406-7c79a92b26ce
Taunton, D.J.
10bfbe83-c4c2-49c6-94c0-2de8098c648c
Chapelle, Dominique
0daa670c-bb7e-44ad-bf05-846417bdc19c
Trimarchi, Daniele, Turnock, S.R., Taunton, D.J. and Chapelle, Dominique
(2010)
The use of shell elements to capture sail wrinkles, and their influence on aerodynamic loads.
Second International Conference on Innovation in High Performance Sailing Yachts, Lorient, France.
30 Jun - 01 Jul 2010.
12 pp
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Sails are an example of fluid structure interaction (FSI), where the structural deformation, as well as the fluid dynamics, needs to be taken into account in order to analyse performances. The emphasis of this paper is placed on developing techniques that can study the dynamic behaviour of sails. This is necessary, especially when approaching downwind sails, where the nature of the flow is subjected to large separations and unsteady phenomena such as vortex shedding. Preliminary studies are presented about bluff body type flows, representative of spinnaker flows, and about typical Gennaker sections. From a structural perspective, the fabric is modelled with shells, rather than membranes. This approach shows considerable advantages, since these will capture buckling related phenomena such as wrinkling, which have to be treated with additional models for membrane based analysis. It is found that the unsteadiness and the presence of wrinkles can significantly alter the sail force
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Published date: 1 July 2010
Venue - Dates:
Second International Conference on Innovation in High Performance Sailing Yachts, Lorient, France, 2010-06-30 - 2010-07-01
Identifiers
Local EPrints ID: 160535
URI: http://eprints.soton.ac.uk/id/eprint/160535
PURE UUID: 3082e1b6-d873-4801-a830-c011c06870f9
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Date deposited: 15 Jul 2010 13:13
Last modified: 14 Mar 2024 02:42
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Contributors
Author:
Daniele Trimarchi
Author:
Dominique Chapelle
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