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Proceedings of the
3rd Intemational Conference on Innovation in High Performance Sailing Yachts
Cité de la Voile Eric Tabariy - Lorient - France
26th-28th June, 2013
77ie Uiird International Conference on Innovation in High Performance Sailing Yachts, Lorient, France
FOREWORD
On behalf of the organizing cominittee, it is my great pleasure to welcome you all to the third edition ofthe conference INNOV'SAIL. The close cooperation between the Cité de la Voile Eric Tabariy, Eurolarge Innovation and the French Naval Academy Research Institute made this conference exist and develop. This time again, INNOV'SAIL has attracted a great interest worldwide, with a wide range of high quality papers and a large participation. We are glad to welcome both new and returning delegates, and I am particularly happy to see the participation of many students, proving that the topic is attractive.
The event is now well established, and we are very glad to announce that we have concluded an agreement with the organizing committees of the two other famous conferences. High Perfonnance Yacht Design Conference in Auckland and the Chesapeake Sailing Yacht Symposium in Annapolis to coordinate and alternate over the yeai-s the organization of our three conferences. We believe that cooperating and joining our forces will help develop and amplify the commumty working in yacht engineering and research and help fruitful collaborations. Tliis goal to coordinate activities in the community and help networking has also driven the will to create the International Association of Yacht Engineering, to be aimounced during the conference.
I believe that the field of high performance sailing is developing, and as the industry is growing and the racing competitiveness is increasing, it gives rise to more and more research activities. Actually, architects, boat builders, sail makers and the whole industry around sailing require more and more studies and optimising tools to gain perfonnance, and I think that there are good opportunities for challenging research activities, because the problems issued from sailing are quite difficult to cope whh and to model. Hence, some really advanced research is done in this field which does not often get the visibility and the acknowledgement it deserves in the scientific conmiunity. Aiming at increasmg the visibility of the high quality research achieved on yachts, we agreed with the high impact peer-reviewed scientific journal Ocean Engineering to edit a special issue on yacht research with a selection of high scientific quality papers presented at the conference. With the huge amount of work needed to organize and nm the conference, I would like to warmly thank all the organizing committee for their fantastic work, and all members of the scientific committee for their great and necessaiy help in reviewing the papers, increasing the conference quality and releasing infonnation about the conference in their own country. Finally, I would like to warmly thank Lorient Agglomeration, Region Bretagne, Conseil General du Morbihan, and GIF Ecole Navale for their very much appreciated support wliich made the conference possible, as well as our sponsors. North Sails France, 727 Sailbags and AFM.
I hope you will all have a very infoimative and interesting conference, as enjoyable as the previous ones.
Patrick Bot Conference Chair
Tlie Tliird Intemational Conference on Innovation in High Performance Sailing Yachts, Lorient, France
MANY THANKS TO OUR SPONSORS
LoRIEKT
/ • C t L O M E C - . n O i l
Tliird International Conference on Innovation in High Performance Sailing Yachts, Lorient. Fu
Organizing Committee
- Jean-Marc Beaumier, Cité de la Voile Eric Tabariy - Patrick Bot, Naval Academy Research Institute, France - Marie Coz, Naval Academy Research Institute, France - Yami Dollo, Eurolarge Innovation
- Cécile Ezanno, Cité de la Voile Eric Tabariy - Clii'istelle Marécaille, Eurolarge Iimovation - Katia Meigney, Cité de la Voile Eric Tabariy - Sabrina Millien, Eurolarge Innovation
Scientific Committee
- Prof. Christophe Baley, Université Bretagne Sud, France Prof Dario Boote, University of Genova, Italy
Patrick Bot', Naval Academy Research Institute, France
- Prof Richard Flay', Yacht Research Unit, University of Auckland, New Zealand Prof Fabio Fossati', Politecnico di Milano, Italy
- Prof Kaï Graf, Yacht Research Unit, University of Applied Sciences, Kiel, GeiTnany
- Len Imas, Stevens Institute of Teclinology, USA
- J.A. Keuning, Delft Universitj' of Teclinology, The Netherlands - Prof Lars Larsson, Chalmers University of Technology, Sweden - William Lasher, Pemisylvania State University, USA
- Prof Yutaka Masuyama, Kanazawa Institute of Technology, Japan Prof Marc Rabaud, Université Paris Sud, France
Ignazio Viola, University of Newcastle, U K
- Prof Michel Visomieau, Ecole Centrale de Nantes, France - Sandy Wright, Wolfson Unit MTIA, UK
' Editors ofthe special issue in Ocean Engineering
Third International Conference on Innovation in High Performance Sailing Yachts, Lorient. Fn
TABLE OF CONTENTS
Session 1: Hydrodynamics
Dagger-Board Evaluation for an IMOCA60 Yacht I. Campbell, M . Owen and G . Provinciali
- Advancements in Free Surface RANSE Simulations for Sailing Yacht Applications C . B ö h m , K . Graf
Database Building and Statistical Methods to Predict Sailing Yachts Hydrodynamic L . Huetz, P.E. Guillerm
A Simplified Method to Assess Acceleration Loads on Sailing Yacht Masts A. Combourieu, F . Faloci, D . Boote, T. Pais
Session 2: Hydrodynamics
Numerical Study of Asymmetric Keel Hydrodynamic Performance tlirough Advanced CFD p. 45 D . Mylonas, S. Turkmen, M . Khorasanchi
Nanow Ship Wakes and Wave Drag for Planing Hulls p. 57 M . Rabaud, F . Moisy
Session 3: Aerodynamics
Conceptual Ideas on a Double Surface Sail Inflated by Dynamic Pressure p 63 S. Drüns, H . Hansen, K . Hochkirch
Comparison of Full 3D-RANSE Simulations with 2D-RANSE / Lifting Line Method
Calculations for the Flow Analysis of Rigid Wings for High Peiformance Multihulls p 71 K . Graf, A . V . Hoeve, S. Walin
A Comparison of Downwind Sail Coefficients from Tests in Different Wind Tunnels p 85 I. Campbell
Session 4: Sti-iicture /Materials
Smart Materials Application on High Performance Sailing Yachts for Energy Harvesting p. 99 S. Turkmen. D. Mylonas, M . Khorasanchi
Long Term Immersion in Natural Seawater of Flax / Biocomposite p. ] 09 A . L e Duigou, A. Bourmaud, C . Baley. P. Davies
Session 5: Aerodynamics
Wind-Tunnel Pressure Measurements on Rigid Model-Scale Downwind Sails Bot P., Viola I.M., Flay R . G . J . . Brett J.S.
Delayed Detached Eddy Simulation of Sailing Yacht Sails I . M . Viola, S. Bartesaghi, T. Van. Renterghem, R. Ponzini
777e 7777rt^ International Conference on Innovation in High Performance Sailing Yachts, Lorient, France
An Experimental Investigation of Asymmetric Spinnaker Aerodynamics Using Pressure
and Sail Shape Measurements p. 145 D. Motta, R . G J . Flay, P. Richards, D . L e Pelley,
Session 6: Fluid Structure Interaction - Aero-elaslicit}>
Numerical Study of a Fexible Sail Plan: Effect of Pitching Decomposition and
Adjustments P- 155 B . Augier, F . Hauville, P. Bot, J . Deparday, M . Duiand
FSI Investigation on Stability of Downwind Sails with an Automatic Dynamic Trimming p. 165 M . Durand, C . Lothode. F . Hauville, A . Leroyer, M . Visonneau, R. Floch, L . Guillaume
Development of Computational Fluid-Sü ucture Interaction Method for Yacht Sails p. 173 F . Bergsma, N . Moerke, S. Zaaijer, H . W . M . Hoeijmakers
Session 7: Fluid Structure Interaction - Hydro-elasticit}'
Flutter of Racing Yacht Keels and Appendages p. 183 R. Baize and H . Devaux
Dynamic Fluid Sti-ucture Interaction of a Foil p. 191 C . Lothodé, M . Durand, Y . Roux, A . Lero)'er, M . Visonneau, L . Dorez
An Unsteady FSI Investigation into the Cause of the Dismasting of the Volvo 70
Groupama4 P- 197 W. Menotti, M . Durand, D . Gross, V . Roux, D . Glehen, L . Dorez
The Vi'ork Achieved with the Sail Dynamometer Boat "Fujin", and the Role of Full Scale
Tests as the Bridge between Model Tests and CFD p. 205 Y . Masuyama
Estimating a Yacht's Huil-Sailplan Balance and Sailing Performance using Experimental
Results and VPP Methods p. 215 M.P. Prince, A . R . Claughton
Session 8: Tactics - Meteo - Sinnilalor
Sailing Site Livestigation through CFD Modelling of Micrometeorology p. 223 M . L e Guellec, Y . Amice
Optimal Yacht Routing Tactics p- 231 F . Tagliaferri, A . Philpott. I . M . Viola, R . G . J . Flay
Development of an America's Cup 45 Tacking Simulator p. 239 A . K . Lidtke, L . Maiimon Giovannetti. L . - M Breshan, A . Sampson, M . Vitti, D . J . Taunton
777e 777/7-^7 International Conference on Innovation in High Performance Sailing Yachts, Lorient, Ft
Posters
Coupled Open Navigation and Augmented Reality Systems for Skippers p. 249
J . C . Morgere, R. Douguet, J.P. Diguet, J. Laurent.
- Lecco Innovation Hub Sailing Yacht Lab Project. A Sailing Research Lifrastructure p. 255
F . Fossati, S. Muggiasca, I. Bayati, C . Bertorello.
Study ofthe Influence of Singularities Created by Automated Fiber Placement on the
Performance of Composite Materials for Naval Structures p. 261
M . Lan, D. Cartié, P. Davies, C . Baley.
Tag Sheperd: a Low-Cost and Non-Intrusive Man Overboard Detection Systein p. 267
N. L e Griguer, J. Laurent, J.P. Diguet.
Kite and Classical Rig Sailing Performance Comparison on a One Design Keel Boat p. 273
R. Leioup, K . Roncin, G. Blés, J.-B. Leroux, C . Jochum, Y . Parlier.
Advanced Structural Analysis Method for Aeroelastic Simulations of Sails p. 281
S. Malpede, F . D'Angeli, R. Bouzaid.
Fluid-Structure Interaction Modelling on a Sail p 289 K. Suresh, A . K . Sahoo, A. Tripathi.
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