International Journal of Naval Architecture and Ocean Engineering

The Society of Naval Architects of Korea (대한조선학회)
권호 표지
DOI QR코드

DOI QR Code

A study on the optimal equation of the continuous wave spectrum

  • Cho, Hong-Yeon (Coastal & Environmental Engineering Division, Korea Institute of Ocean Science & Technology) ;
  • Kweon, Hyuck-Min (Department of Railway Construction & Environmental Engineering, Gyeongju University) ;
  • Jeong, Weon-Mu (Coastal & Environmental Engineering Division, Korea Institute of Ocean Science & Technology) ;
  • Kim, Sang-Ik (Coastal Disaster Research Center, Korea Institute of Ocean Science & Technology)
  • Received : 2015.05.26
  • Accepted : 2015.08.31
  • Published : 2015.11.30
Download PDF
⟨ Previous Next ⟩

Abstract

Waves can be expressed in terms of a spectrum; that is, the energy density distribution of a representative wave can be determined using statistical analysis. The JONSWAP, PM and BM spectra have been widely used for the specific target wave data set during storms. In this case, the extracted wave data are usually discontinuous and independent and cover a very short period of the total data-recording period. Previous studies on the continuous wave spectrum have focused on wave deformation in shallow water conditions and cannot be generalized for deep water conditions. In this study, the Generalized Extreme Value (GEV) function is proposed as a more-optimal function for the fitting of the continuous wave spectral shape based on long-term monitored point wave data in deep waters. The GEV function was found to be able to accurately reproduce the wave spectral shape, except for discontinuous waves of greater than 4 m in height.

Keywords

References

  1. Coles, S., 2001. An introduction to statistical modeling of extreme values, Chap. 3, Springer series in statistics. London: Springer.
  2. Goda, Y., 2000. Random seas and design of maritime structures, Chap. 2, Advances series on ocean engineering. Singapore: World Scientific.
  3. Holthuijsen, L.H., 2007. Waves in oceanic and coastal waters, Chaps. 4, 6 and 8. Cambridge: Cambridge University Press.
  4. Kottegoda, N.T. and Rosso, R., 1997. Statistics, probability, and reliability for civil and environmental engineers, Sec. 7.2.5. New York : McGraw-Hill Co.
  5. Kweon, H.M., Cho, I.H. and Cho, H.Y., 2013, Heaving amplitude characteristics of the resonance power buoy in shallow water with an insufficient draft. International Journal of Naval Architecture and Ocean Engineering, 5(4), pp.614-624. https://doi.org/10.2478/IJNAOE-2013-0157
  6. Kweon, H.M., Cho, H.Y. and Cho, I.H., 2014. A study of the optimum combination of multiple resonance power buoys for maximizing electric power production. International Journal of Naval Architecture and Ocean Engineering, 6(4), pp.813-825. https://doi.org/10.2478/IJNAOE-2013-0215
  7. Panicker, N.N. and Borgman, L.E., 1974. Enhancement of directional wave spectrum estimates, Chap. 14. Proceedings of the Fourteenth International Conference on Coastal Engineering, Copenhagen, 24-28 June, 1974, pp.258-279.
  8. Suh, K.D., Kwon, H.D. and Lee, D.Y., 2010. Some statistical characteristics of large waves around the Korean Peninsula. Coastal Engineering, 67, pp. 375-384.

Cited by

  1. Digital-Control-Based Approximation of Optimal Wave Disturbances Attenuation for Nonlinear Offshore Platforms vol.10, pp.12, 2017, https://doi.org/10.3390/en10121997
  2. 남항진 파랑 스펙트럼 정보를 이용한 대표 스펙트럼 매개변수 추정 및 분석 vol.32, pp.5, 2020, https://doi.org/10.9765/kscoe.2020.32.5.363