变水深对畸形波及其时频能量谱的影响

崔成; 张宁川; 郭传胜; 房卓

变水深对畸形波及其时频能量谱的影响

大连理工大学海岸及近海工程国家重点实验室,辽宁大连 116024

基金项目: 教育部基金重点资助项目(104061)。

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出版历程
- 收稿日期: 2010-08-11
- 修回日期: 2011-04-06

Impact of water depth variation on simulated freak waves and their time-frequency energy spectrum

State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology, Dalian 116024, China

摘要

摘要: 使用VOF (volume of fluid ) 方法实现了变化水深条件下畸形波的数值模拟,使用小波分析方法计算模拟结果的时频能量谱,发现变化水深可以加强波浪的非线性相互作用,使转化到高频端的能量更多,产生了不对称程度更大的畸形波。
- 畸形波 /
- 小波分析 /
- 变水深 /
- 时频能量谱
Abstract: The volume of fluid (VOF) method is used to numerically simulate freak wave under the varying water depth condition, and the wavelet analysis method is applied to the numerical results to investigate the energy distribution on the time-frequency domain. It is concluded that water depth variation can enhance nonlinear wave-wave interactions which makes much more energy to transfer to high harmonics and freak waves with higher asymmetry to generate.
- freak wave /
- wavelet analysis /
- water depth variation /
- time-frequency energy spectrum

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参考文献(16)

TSAI C H, SU M Y, HUANG S J. Observations and conditions for occurrence of dangerous coastal waves[J]. Ocean Engineering, 2004, 31(5-6): 745-760.

LAWTON G. Monsters of the deep (the perfect wave)[J].New Scientist, 2001, 170 (2297): 28-32.

BUNNIK T, VELDMAN A, WELLENS P. Prediction of extreme wave loads in focused wave groups // Proceedings of the 18th (2008) International Offshore and Polar Engineering Conference. Vancouver, BC, Canada,2008: 32-38.

KLINTING P, SAND S E. Analysis of prototype freak waves //Conf. of Coastal Hydrodynamics. New York,1987: 618-632.

KIM C H, RANDALL R E, KRAFFT M J.Experimental Study of kinematics of large transient wave in 2-D wave tank .OTC6364,1990: 195-202.

KRIEBEL D L.Efficient simulation of extreme waves in a random sea //Abstract for Rogue Waves 2000 Workshops.Brest.2000:1-2.

DYACHENKO A I, ZAKHAROV V E. Modulation instability of Stokes wave → freak wave[J]. JETP Letters, 2005, 81(6): 255-259.

ZAKHAROV V E, DYACHENKO A I, PROKOFIEVB A B. Freak waves as nonlinear stage of Stokes wave modulation instability[J]. European Journal of Mechanics: B. Fluids, 2006, 25(5): 677-692.

MORI N, YASUDA T. Effects of high-order nonlinear wave-wave interactions on gravity waves[J].Ocean Engineering, 2002, 29 (10): 1233-1245.

GRILLI S T, GUYENNE P. DIAS F.A fully non-linear model for three-dimensional overturning waves over an arbitrary bottom[J].International Journal for Numerical Methods in Fluids, 2001, 35(7): 829-867.

ZHAO X Z, HU C H, SUN Z C. Numerical simulation of extreme wave generation using VOF method[J]. Journal of Hydrodynamics, 2010, 22 (4): 466-477.

CHIEN H, KAO C C, CHUANG L Z H. On the characteristics of observed coastal freak waves[J]. Coastal Engineering Journal, 2002, 44(4): 301-319.

HIRT C W, NICHOLS B D. Volume of fluid (VOF) method for the dynamics of free boundaries [J]. Journal of Computational Physics, 1981, 39(1): 201-225.

REN B, WANG Y X. Numerical simulation of random wave slamming on structures in the splash zone[J]. Ocean Engineering, 2004, 31(5-6): 547-560.

WANG Y X. Numerical wave channel with absorbing wave-maker [J].China Ocean Engineering, 1995, 9(2): 79-88.

TORRENCE C, COMPO G P. A practical guide to wavelet analysis [J]. Bulletin of the American Meteorological Society, 1998, 79 (1): 61-78.

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文章访问数: 1424
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