INTERACTIVE SIMULATION OF SHIP MOTIONS IN RANDOM SEAS BASED ON REAL WAVE SPECTRA

José Miguel Varela, Carlos Guedes Soares

2011

Abstract

The current paper presents a methodology to compute and represent the ship motions at interactive frame rates, when navigating on a virtual sea defined by a real wave spectrum. The Inverse Discrete Fast Fourier Transform algorithm is used to compute the sum of all ship motions components induced by the waves and get the final irregular ship motion. Currently, this is the most efficient method to simulate the ship motions in interactive ocean simulations using wave spectra to describe the sea states. The visual realism and physical accuracy of the simulations turns this method into a powerful tool for developing interactive ship simulators.

References

  1. Bhattacharyya, R. 1978. “Dynamics of Marine Vehicles”, John Wiley & Sons Inc.
  2. Belyalev, V. 2003. “Real-time simulation of water surface”, In: GraphiCon-2003, Conference Proceedings, pages 131-138. MAX Press.
  3. Daqaq, M. 2003. “Virtual Reality Simulation of Ships and Ship-Mounted Cranes”, MSc Thesis. Faculty of the Virginia Polytechnic Institute and state University. Blacksburg, Virginia.
  4. Fonseca, N., and Guedes Soares, C., 1998. “Time-Domain Analysis of Large-Amplitude Vertical Motions and Wave Loads”, Journal of Ship Research, Vol. 42, Nº 2, pp. 100-113.
  5. Fonseca, N. and Guedes Soares, C., 2002. “Comparison of Numerical and Experimental Results of Non-Linear Wave Induced Vertical Ship Motions and Loads”, Journal of Marine Science and Technology, vol. 6, pp. 193-204.
  6. Fréchot, J., 2007. “Realistic Simulation of Ocean Surface Using Wave Spectra”, Journal of Virtual Reality and broadcasting, vol. 4, nº 11.
  7. Goda, Y., 2000. “Random Seas and design of maritime structures”, Advanced Series on Ocean Engineering, World Scientific, vol. 15, ch. 2.
  8. Guedes Soares, C., 1995. “Effect of Wave Directionality on Long-Term Wave Induced Load Effects in Ship.” Journal of Ship Research, vol. 39 nº 2, pp. 150-159.
  9. Lewis, E.V. (Ed.). 1988. “Principles of Naval Architecture Vol. III: Motions in Waves and Controllability” 3rd ed. Society of Naval Architects and Marine Engineers, New York.
  10. Moreland, K. and Angel, E., 2003. “The FFT on a GPU”, HWWS'03 Proceedings of the ACM SIGGRAPH/EUROGRAPHICS conference on Graphics Hardware, 26-27 July, San Diego, CA, USA, pp. 112-119.
  11. Salvesen, N., Tuck, O.E. and Faltinsen, O., 1970. “Ship motions and sea loads”, Transactions, Society of Naval Architects and Marine Engineers, no. 78, pp. 250- 287.
  12. Sutulo, S.; Moreira, L., and Guedes Soares, C., 2002. “Mathematical Models for Ship Path Prediction in Manoeuvring Simulation Systems”, Ocean Engineering, vol. 29, nº 1, pp. 1-19.
  13. Sutulo, S.; Rodrigues, J. M., and Guedes Soares, C., 2010. “Hydrodynamic Characteristics of Ship Sections in Shallow Water with Complex Bottom Geometry”, Ocean Engineering. vol. 37, pp. 947-958.
  14. Tessendorf, Jerry, 2001, “Simulating Ocean Water”, SIGGRAPH 2001, course notes.
  15. Ueng, Shyh-Kuang; Lin, David and Liu, Chieh-Hong, 2008, “A ship motion simulation system”, Virtual Reality, vol. 12, pp. 65-76.
  16. Xiufeng, Zhang; Yicheng, Jin; Yong, Yin and Zhihua, Li. 2004. “Ship Simulation Using Virtual Reality Technique.”, Proceedings of GRAPHITE 2004. 15-18 June, Singapore.
Download


Paper Citation


in Harvard Style

Miguel Varela J. and Guedes Soares C. (2011). INTERACTIVE SIMULATION OF SHIP MOTIONS IN RANDOM SEAS BASED ON REAL WAVE SPECTRA . In Proceedings of the International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2011) ISBN 978-989-8425-45-4, pages 235-244. DOI: 10.5220/0003324502350244


in Bibtex Style

@conference{grapp11,
author={José Miguel Varela and Carlos Guedes Soares},
title={INTERACTIVE SIMULATION OF SHIP MOTIONS IN RANDOM SEAS BASED ON REAL WAVE SPECTRA},
booktitle={Proceedings of the International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2011)},
year={2011},
pages={235-244},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003324502350244},
isbn={978-989-8425-45-4},
}


in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Computer Graphics Theory and Applications - Volume 1: GRAPP, (VISIGRAPP 2011)
TI - INTERACTIVE SIMULATION OF SHIP MOTIONS IN RANDOM SEAS BASED ON REAL WAVE SPECTRA
SN - 978-989-8425-45-4
AU - Miguel Varela J.
AU - Guedes Soares C.
PY - 2011
SP - 235
EP - 244
DO - 10.5220/0003324502350244