Fluid-Structure Interaction Analyses for Hydro-Elastic Tailoring of a Windsurfer Fin
2022
Miguel Cardoso de Brito | Leigh Stuart Sutherland | José Manuel C. Pereira | Mário Rui Arruda
A fully iterative &lsquo:two-way&rsquo: fluid-structure interaction (FSI) tool of a commercially available composite windsurfer fin was developed, which was then used to investigate the normally hidden fin behaviour for a range of typical sailing conditions. The &lsquo:two-way&rsquo: FSI analysis gave significantly better insights into the fin behaviour than the simpler &lsquo:one-way&rsquo: non-iterative analysis. The tool also indicated that hydro-elastic tailoring, via simple reinforcement ply rotations, can produce large changes in tip twist. This gives an opportunity for both improved passive control and higher speeds, without deviating from a hydrodynamically optimal plan form. Inexpensive cantilever tests appear to be sufficient to make qualitative comparisons between the sailing responses of fins with different layups.
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