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Citation:
　TENG Bin and NING De-zhi*.A simplified model for extreme-wave kinematics in deep sea[J].Journal of Marine Science and Application,2009,(1):27-32.
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A simplified model for extreme-wave kinematics in deep sea

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Title:
A simplified model for extreme-wave kinematics in deep sea
Author(s):
TENG Bin and NING De-zhi*
Affilations:
Author(s):
TENG Bin and NING De-zhi*
State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023, China
Keywords:
extreme wave;  deep sea;  fifth-order Stokes regular wave;  kinematics;  velocity field
分类号:
-
DOI:
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Abstract:
Based on the fifth-order Stokes regular wave theory, a simplified model for extreme-wave kinematics in deep sea was developed. In this model, from the wave records the average of two neighboring wave periods for the extreme crest or trough was defined as the period of the Stokes wave by the up and down zero-crossing methods. Then the input wave amplitude was deduced by substituting the wave period and extreme crest or trough into the expression for the fifth-order Stokes wave elevation. Thus the corresponding formula for the wave velocity can be used to describe kinematics beneath the extreme wave. By comparison with the published numerical models and experimental data, the proposed model is validated to be able to calculate the extreme wave velocity rather easily and accurately.

References:

[1] BALDOCK T E, SWAN C, TAYLOR P H. A laboratory study of nonlinear surface waves on water[J]. Phil. Trans. R. Soc. Lond. A, 1996, 354: 649-676.
[2] JOHANNESSEN T and SWAN C. A laboratory study of the focusing of transient and directionally spread surface water waves[J]. Proc. R. Soc. Lond. A, 2001, 457: 971-1006.
[3] SHE K, GREATED C A, EASSON W J. Experimental study of three-dimensional wave kinematics[J]. Applied Ocean Research, 1997, 19: 329-343.
[4] GRUE J, CLAMOND D, HUSEBY M , JENSEN A. Kinematics of extreme waves in deep water[J]. Applied Ocean Research, 2003, 25: 355-366.
[5] FENTON J D, RIENECKER M M. A Fourier method for solving nonlinear water-wave problems: application to solitary-wave interactions[J]. Fluid Mech, 1982, 118: 411-443.
[6] JOHNNESSEN T B , SWAN C. Nonlinear transient water waves-Part 1. A numerical method of computation with comparisons to 2-D laboratory data[J]. Appl. Ocean Res., 1997, 19: 293-308.
[7] BATEMAN W J D, SWAN C, TAYLOR P H. On the calculation of the water particle kinematics arising in a directionally spread wavefield[J]. Journal of Computational Physics, 2003, 186: 70-92.
[8] FENTON J D. A fifth-order Stokes theory for steady waves[J]. Journal of Waterway, Port, Coastal and Ocean Engineering, ASCE, 1985, 111: 216-234.
[9] NING De-zhi, TENG Bin, EATOCK Taylor R , ZANG J. Numerical simulation of non-linear regular and focused waves in an infinite water-depth[J]. Ocean Engineering, 2008, 35: 887-89.
[10] NING De-zhi, TENG Bin, ZANG J, LIU S X.A fully nonlinear model for focused wave groups[C]. //Proc. 23rd International workshop on water waves and floating bodies. Jeju, Korea, 2008.

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Last Update: 2010-04-19