Advertisement

Analysis of Bow Shapes Proposed on a High-Speed Displacement Hull

  • Franklin J. Domínguez RuizEmail author
  • Lino Andrés García Jaramillo
  • Patrick Roger Townsend Valencia
Conference paper
  • 200 Downloads

Abstract

This study uses the computer fluid dynamic (CFD) software to compare the resistance between six different bow shapes for a high-speed displacement hull – type NPL. To begin, the original forms of a conventional shape hull are compared between the resistance results from tank test measurements with the CFD results. Then, six bow shapes are also proposed and analyzed, including a bulbous bow, wave piercing bow, axe bow, modified axe bow, and reverse piercing bow; these shapes are sized according to analytical and experimental recommendations. At final on this research, a new hull bow shape is proposed: by adding a ballast bulb to the axe bow to improve ship performance. The CFD resistance calculation is performed for calm water, while for the sea condition is considered added resistance estimation, calculated from seakeeping analysis. A predictive resistance analysis has been performed to show ship behavior and compared with the CFD results. Finally, the seaworthiness analyses of the models are calculated using strip theory to compare the ship comfort and performance of the six studied models.

Keywords

CFD High speed ship Bow Optimization 

Notes

Acknowledgements

Special thanks are extended to ORCA 3D MARINE CFD AND SIMERICS for permission to use the CFD software results in this analysis. Special thanks also to ESPOL for permission to use the University licenses to conduct this study according to the investigation programs.

References

  1. Bentley Systems: Maxsurf motions user manual, version 20 (2013)Google Scholar
  2. Bentley Systems: Maxsurf resistance user manual, version 20 (2013)Google Scholar
  3. Faltinsen, O.M.: Sea Loads on Ships and Offshore Structures. Cambridge University Press, Cambridge (1990)Google Scholar
  4. Ghassemi, H., Majdfar, S., Gill, V.: Calculations of the heave and pitch RAO’s for three different ship’s hull forms. J. Ocean Mech. Aerospace Sci. Eng. 22 (2015)Google Scholar
  5. Hirota, K.: Development of bow shape to reduce the added resistance due to waves and verification on full scale measurement. In: International Conference on Marine Research and Transportation, The Island of ISCHIA, Italy (2005)Google Scholar
  6. Holtrop, J., Mennen, G.G.J.: An approximate power prediction method. Int. Shipbuilding Progress 29, 166–170 (1982)CrossRefGoogle Scholar
  7. Holtrop, J.: A statistical re-analysis of resistance and propulsion data. Int. Shipbuilding Progress 31, 363 (1984)Google Scholar
  8. Keuning, J.A., Pinkster, J.: Optimization of the seakeeping behavior of a fast monohull. In: Fast 1995 Conference (1995)Google Scholar
  9. Keuning, J.A., Pinkster, J., van Walree, F.: Further investigation into the hydrodynamic performance of the AXE bow concept. In: Proceedings of the 6th Symposium on High Speed Marine Vehicles, Castello di Baia, Italy, pp. II 25–II 38 (2002)Google Scholar
  10. Kyriazis, G.: Bulbous bow design optimization for fast ships. M.Sc. thesis, Massachusetts Institute of Technology (1996)Google Scholar
  11. Michell, J.H.: The wave resistance of a ship. Philos. Mag. 5(45), 106–123 (1898)CrossRefGoogle Scholar
  12. McCauley, M.E., Royal, J.W., Wylie, C.D., O’Hanlon, J.F., Mackie, R.R.: Motion sickness incidence: exploratory studies of habituation, pitch and roll and the refinement of a mathematical model. Human Factors Research Inc., Technical Report 1733-2, 1976. (USN ONR contract N00014-73-C-0040)Google Scholar
  13. Prpić-Oršić, J., Nabergoj, R., Trincas, G.: The methods of added resistance estimation for ships in a seaway. Pula, Croatia, Symposium Sorta (2008)Google Scholar
  14. Salvesen, N.: Added resistance of ships in waves. J. Hydronaut. 12(1), 24–34 (1978)CrossRefGoogle Scholar
  15. Takahei, T.: A study on the waveless bow Part I. J. Soc. N. A. Japan 108, 53–61 (1960)Google Scholar
  16. Takahei, T.: A study on the waveless bow Part II. J. Soc. N. A. Japan 109, 73–85 (1961)Google Scholar
  17. Wigley, W.C.S.: The Theory of the Bulbous Bow and Its Practical Application. Newcastle (1936)Google Scholar

Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  1. 1.TECNAVIN S.A.GuayaquilEcuador
  2. 2.Universidade da Coruña - UDCA CoruñaSpain
  3. 3.ESPOLGuayaquilEcuador

Personalised recommendations