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http://dx.doi.org/10.3744/SNAK.2002.39.1.038

Theoretical Study on the Generation of Directional Extreme Waves  

Key-Yong Hong (한국해양연구원 해양개발시스템연구본부)
Shuxue Liu (대련이공대학 해안해양공학국가중점연구실)
Seok-Won Hong (한국해양연구원 해양개발시스템연구본부)
Publication Information
Journal of the Society of Naval Architects of Korea / v.39, no.1, 2002 , pp. 38-48 More about this Journal
Abstract
Theoretical development to generate the directional extreme waves in model basin is established based on wave focusing method. The effects of associated parameters, such as the directional range, frequency width, and center frequency, are investigated in terms of wave focusing efficiency. The two different spectral models of constant wave amplitude and constant wave slope are applied to control the wave characteristics. The wave packets simulated by theory are compared with numerical results based on Boussinesq equation and FEM. Both controls of direction and frequency spectrum are essential to focus directional waves effectively. It is noticed that wave focusing ability depends on the frequency bandwidth of spectrum rather than center frequency, and both spectral models with same parameters result in the equivalent efficiency of wave focusing.
Keywords
Directional wave; Wave focusing; Extreme wave; Directional wave basin;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Takezawa, S. & Takekawa, M., 1976 'Advanced experimental techniques for testing ship models in transient water waves: Part I: The transient test technique on ship motions in waves', 11th Symposium on Naval Hydrodynamics, 23-35
2 Takezawa, S. & Hirayama, T., 1976 'Advanced experimental techniques for testing ship models in transient water waves: Part II: The controlled transient water waves for using in ship motion tests', 11th Symposium on Naval Hydrodynamics, 37-54
3 Chan, E.S. & Melville, W.K., 1988 'Deep water plunging wave pressures on a vertical plane wall', Proc. of the Royal Society, A417, 95-131
4 Takayama, T., 1984 'Theory of oblique waves generated by serpent type wave-maker', Coastal Engineering in Japan, 27, pp.1-19
5 Ramberg, S.E. & Griffin, O.M., 1987 'Laboratory study of steep and breaking deep water waves', J. Waterway, Port, Coastal and Ocean Eng., 113, 493-506   DOI   ScienceOn
6 Rapp, R.J. & Melville, W.K., 1990 'Laboratory measurements of deep-water breaking waves', Transactions Philosophical of the Royal Society of London, A331, 735-800
7 Johannessen, T.B. 1997 'The effect of directionality on the nonlinear behavior of extreme transient ocean waves', Ph.D thesis, University of London
8 She, K., Greated, C.A., & Easson, W.J., 1994 'Experimental study of three-dimensional wave breaking', J. waterway, Port, Coastal, and Ocean Eng., 120, 20-36   DOI   ScienceOn
9 Larsen, J. & Dancy, H., 1983 'Open boundaries in short wave simulationa new approach', Coastal Eng., 7, 285-297   DOI   ScienceOn
10 Kway H.L., Loh Y.S. & Chan E.S., 1998 'Laboratory study of deep-water breaking waves', Ocean Eng., 25(8), 657-676   DOI   ScienceOn
11 Beji, S. & Nadaoka, K., 1996 'A formal derivation and numerical modeling of the improved Boussinesq equations for varying depth', Ocean Eng., 23(8), 691-704   DOI   ScienceOn
12 Biesel, F., 1954 'Wave machines', Proc. 1st Conf. on Ships and Waves, 288-304
13 Su, M.Y., 1982 'Three dimensional deep water waves', J. Fluid Mech., 124, 73-108   DOI   ScienceOn
14 Skyner, D.J., Gray, C., & Greated, C.A., 1990 'A comparison of time-stepping numerical predictions with whole-field flow measurement in breaking waves', Water Wave Kinematics, 491-508