Numerical Simulation of Deterministic Freak Wave Based on Energy Distribution

Ning Bo Gao; Jian Min Yang; Wen Hua Zhao; Xin Li

doi:10.3969/j.issn.1007-7294.2017.12.001

Numerical Simulation of Deterministic Freak Wave Based on Energy Distribution

Ning Bo Gao, Jian Min Yang, Wen Hua Zhao, Xin Li

Oceans Graduate School

Research output: Contribution to journal › Article › peer-review

Abstract

In this study, a theoretical freak wave sequence is numerically simulated and compared with the theoretical results. To accomplish this objective, velocity inlet method is applied. At the wave-maker boundary, linear velocity components are input, which takes no consideration of higher-order wave components. Numerical simulation in three different grid models is conducted to determinate which model is efficient as well as being capable to track the free surface. As Fast Fourier Transformation (FFT) can not reflect the temporal-frequency of the freak wave, thus wavelet analysis is introduced to investigate the energy of the wave package during the wave propagation. Comparison of wavelet transform of the freak wave recorded in North Sea and present freak wave is made.

Original language	English
Pages (from-to)	1449-1459
Number of pages	11
Journal	Chuan Bo Li Xue/Journal of Ship Mechanics
Volume	21
Issue number	12
DOIs	https://doi.org/10.3969/j.issn.1007-7294.2017.12.001
Publication status	Published - 1 Dec 2017

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10.3969/j.issn.1007-7294.2017.12.001

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title = "Numerical Simulation of Deterministic Freak Wave Based on Energy Distribution",

abstract = "In this study, a theoretical freak wave sequence is numerically simulated and compared with the theoretical results. To accomplish this objective, velocity inlet method is applied. At the wave-maker boundary, linear velocity components are input, which takes no consideration of higher-order wave components. Numerical simulation in three different grid models is conducted to determinate which model is efficient as well as being capable to track the free surface. As Fast Fourier Transformation (FFT) can not reflect the temporal-frequency of the freak wave, thus wavelet analysis is introduced to investigate the energy of the wave package during the wave propagation. Comparison of wavelet transform of the freak wave recorded in North Sea and present freak wave is made.",

keywords = "Freak wave, Navier-Stokes equations, Wave-wave interaction, Wavelet analysis",

author = "Gao, {Ning Bo} and Yang, {Jian Min} and Zhao, {Wen Hua} and Xin Li",

year = "2017",

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doi = "10.3969/j.issn.1007-7294.2017.12.001",

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T1 - Numerical Simulation of Deterministic Freak Wave Based on Energy Distribution

AU - Gao, Ning Bo

AU - Yang, Jian Min

AU - Zhao, Wen Hua

AU - Li, Xin

PY - 2017/12/1

Y1 - 2017/12/1

N2 - In this study, a theoretical freak wave sequence is numerically simulated and compared with the theoretical results. To accomplish this objective, velocity inlet method is applied. At the wave-maker boundary, linear velocity components are input, which takes no consideration of higher-order wave components. Numerical simulation in three different grid models is conducted to determinate which model is efficient as well as being capable to track the free surface. As Fast Fourier Transformation (FFT) can not reflect the temporal-frequency of the freak wave, thus wavelet analysis is introduced to investigate the energy of the wave package during the wave propagation. Comparison of wavelet transform of the freak wave recorded in North Sea and present freak wave is made.

AB - In this study, a theoretical freak wave sequence is numerically simulated and compared with the theoretical results. To accomplish this objective, velocity inlet method is applied. At the wave-maker boundary, linear velocity components are input, which takes no consideration of higher-order wave components. Numerical simulation in three different grid models is conducted to determinate which model is efficient as well as being capable to track the free surface. As Fast Fourier Transformation (FFT) can not reflect the temporal-frequency of the freak wave, thus wavelet analysis is introduced to investigate the energy of the wave package during the wave propagation. Comparison of wavelet transform of the freak wave recorded in North Sea and present freak wave is made.

KW - Freak wave

KW - Navier-Stokes equations

KW - Wave-wave interaction

KW - Wavelet analysis

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AN - SCOPUS:85041179224

SN - 1007-7294

VL - 21

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JO - Chuan Bo Li Xue/Journal of Ship Mechanics

JF - Chuan Bo Li Xue/Journal of Ship Mechanics

IS - 12

ER -

Numerical Simulation of Deterministic Freak Wave Based on Energy Distribution

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