International Journal of Naval Architecture and Ocean Engineering

The Society of Naval Architects of Korea (대한조선학회)
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Fluid-structure interaction analysis of deformation of sail of 30-foot yacht

  • Bak, Sera (Dept. of Ocean Engineering, Mokpo National University) ;
  • Yoo, Jaehoon (Dept. of Ocean Engineering, Mokpo National University) ;
  • Song, Chang Yong (Dept. of Ocean Engineering, Mokpo National University)
  • Published : 2013.06.30
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Abstract

Most yacht sails are made of thin fabric, and they have a cambered shape to generate lift force; however, their shape can be easily deformed by wind pressure. Deformation of the sail shape changes the flow characteristics over the sail, which in turn further deforms the sail shape. Therefore, fluid-structure interaction (FSI) analysis is applied for the precise evaluation or optimization of the sail design. In this study, fluid flow analyses are performed for the main sail of a 30-foot yacht, and the results are applied to loading conditions for structural analyses. By applying the supporting forces from the rig, such as the mast and boom-end outhaul, as boundary conditions for structural analysis, the deformed sail shape is identified. Both the flow analyses and the structural analyses are iteratively carried out for the deformed sail shape. A comparison of the flow characteristics and surface pressures over the deformed sail shape with those over the initial shape shows that a considerable difference exists between the two and that FSI analysis is suitable for application to sail design.

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References

  1. Abbott, I.H. and Doenhoff, A.E.V., 1949. Theory of wing sections. Dover Publications, New York.
  2. ANSYS Inc., 2009. ANSYS ICEM CFD 12.0 User Manual. ANSYS Inc.
  3. Bak, S., Yoo, J. and Song, C., 2013. Fluid-structure interaction analysis on the deformation of simplified yacht sails. Journal of the Society of Naval Architects of Korea, 50(1), pp.33-40. https://doi.org/10.3744/SNAK.2013.50.1.33
  4. Hallquist, J., Benson, D. and Goudreau, G., 1985. Implementation of a modified Hughes-Liu shell into a fully vectorized explicit finite element code. Proceedings of the International Symposium on Finite Element Methods for Nonlinear Problems. University of Trondheim, Trondheim, Norway.
  5. Heppel, P., 2002. Accuracy in sail simulation: Wrinkling and growing fast sails. Proceedings of the High Performance Yacht Design Conference. Auckland, New Zealand.
  6. Hughes, T. and Carnoy, E., 1983. Nonlinear finite element shell formulation accounting for large membrane strains. Computer Methods in Applied Mechanics and Engineering, 39(1), pp.69-82. https://doi.org/10.1016/0045-7825(83)90074-9
  7. Hughes, T. and Liu, W., 1981a. Nonlinear finite element analysis of shells: Part I. three-dimensional shells. Computer Methods in Applied Mechanics and Engineering, 26(3), pp.331-362. https://doi.org/10.1016/0045-7825(81)90121-3
  8. Hughes, T. and Liu, W., 1981b. Nonlinear finite element analysis of shells: Part II. two-dimensional shells. Computer Methods in Applied Mechanics and Engineering, 27(2), pp.167-181. https://doi.org/10.1016/0045-7825(81)90148-1
  9. Kim, C., Choi, J. and Kim, H., 2011. A construction of aerodynamic force measurement system for wind tunnel test of yacht sail and aerodynamic forces measurement of model sail. Journal of the Society of Naval Architects of Korea, 48(5), pp.445-450. https://doi.org/10.3744/SNAK.2011.48.5.445
  10. Kim, C., Choi, J. and Kim, H., 2012. A study on shape measuring technique of a yacht sail. Journal of the Society of Naval Architects of Korea, 49(1), pp.93-98. https://doi.org/10.3744/SNAK.2012.49.1.93
  11. Larsson, L. and Eliasson, R.E., 2000. Principles of yacht design. International Marine, McGraw-Hill.
  12. Lee, H., Rhee, S.H. and Yoo, J., 2011. Analysis of a two-dimensional section of deforming yacht sails. Journal of the Society of Naval Architects of Korea, 48(4), pp.308-316. https://doi.org/10.3744/SNAK.2011.48.4.308
  13. Lee, P., Kim, H. and Yoo, J., 2006. Numerical analysis of blockage effects on aerodynamic forces for yacht sails in wind tunnel experiment. Journal of the Society of Naval Architects of Korea, 43(4), pp.431-439. https://doi.org/10.3744/SNAK.2006.43.4.431
  14. Menter, F., 1994. Two-equation eddy-viscosity turbulence models for engineering applications. AIAA-Journal, 32(8), pp. 1598-1605. https://doi.org/10.2514/3.12149
  15. Trimarchi, D., Turnock, S., Chapelle, D. and Taunton, D., 2009. Fluid-structure interaction of an isotropic thin composite materials for application to sail aerodynamics of a yacht in waves. 12th Numerical Towing Tank Symposium. Cortona, Italy 04-06 October 2009.
  16. Yoo, J., Park, I., Kim, J., Ahn, H., Van, S.H. and Lee, P., 2005. Calculations of the interactions between main and jib sails. Journal of the Society of Naval Architects of Korea, 42(1), pp.24-33. https://doi.org/10.3744/SNAK.2005.42.1.024
  17. Yoo, J. and Kim, H.T., 2006. Computational and experimental study on performance of sails of a yacht. Ocean Engineering, 33(10), pp.1322-1342. https://doi.org/10.1016/j.oceaneng.2005.08.008