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Paper Title: Fluid Structure Interaction Simulation of Spinnakers Getting Closer to Reality



H F Renzsch, Technical University Delft, The Nethreland
K U Graf, University of Applied Sciences Kiel, Germany


This paper describes the current implementation of FlexSail, a Fluid-Structure-Interaction program for the simulation of the behaviour of spinnakers. A short outline of general membrane theory is given, the major focus lies on the impact of wrinkling and validation. A numerical modelling of anisotropic wrinkling is presented, its impact on flying shape and flow forces investigated. A newly implemented solver is described. A series of test cases comparing the numerical results to data from the Yacht Research Unit Kiel Twisted Flow Wind Tunnel is presented and discussed.


Transactions RINA, Vol 153, Part B2, International Journal of Small Craft Technology, Jul-Dec 2011 

DOI number

DOI No: 10.3940/rina.ijsct.2011.b2.115 

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