Numerical study of infragravity waves amplification during harbor resonance

Junliang Gao; Chunyan Ji; Oleg Gaidai; Yingyi Liu

doi:10.1016/j.oceaneng.2016.02.032

Numerical study of infragravity waves amplification during harbor resonance

Junliang Gao, Chunyan Ji, Oleg Gaidai, Yingyi Liu

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

46 Citations (Scopus)

Abstract

The infragravity (IG) period oscillations inside an elongated rectangular harbor excited by bichromatic wave groups are simulated using a fully nonlinear Boussinesq model. Based on an IG wave analysis technique, this study presents a comprehensive investigation on how bound and free IG waves and their relative components change with respect to the amplitudes and wavelengths of incident primary (short) waves under the condition of the lowest four resonant modes. For the given harbor and ranges of wavelength and amplitude of the primary waves studied in this paper, it is shown that the amplitudes of both the bound and free IG waves become more evident when the short wavelengths increase, and the latter are always larger than the former due to resonant amplification. The amplitudes of both the bound and free IG waves change quadratically with the amplitudes of the incident short waves.

Original language	English
Pages (from-to)	90-100
Number of pages	11
Journal	Ocean Engineering
Volume	116
DOIs	https://doi.org/10.1016/j.oceaneng.2016.02.032
Publication status	Published - Apr 1 2016

All Science Journal Classification (ASJC) codes

Environmental Engineering
Ocean Engineering

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10.1016/j.oceaneng.2016.02.032

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title = "Numerical study of infragravity waves amplification during harbor resonance",

abstract = "The infragravity (IG) period oscillations inside an elongated rectangular harbor excited by bichromatic wave groups are simulated using a fully nonlinear Boussinesq model. Based on an IG wave analysis technique, this study presents a comprehensive investigation on how bound and free IG waves and their relative components change with respect to the amplitudes and wavelengths of incident primary (short) waves under the condition of the lowest four resonant modes. For the given harbor and ranges of wavelength and amplitude of the primary waves studied in this paper, it is shown that the amplitudes of both the bound and free IG waves become more evident when the short wavelengths increase, and the latter are always larger than the former due to resonant amplification. The amplitudes of both the bound and free IG waves change quadratically with the amplitudes of the incident short waves.",

author = "Junliang Gao and Chunyan Ji and Oleg Gaidai and Yingyi Liu",

note = "Funding Information: This work was financially supported by the National Natural Science Foundation of China (Grant nos. 11172058 , 51221961 , 51422901 ), the Jiangsu Key Laboratory of Advanced Design and Manufacturing Technology for Ship (Grant no. CJ1604 ) and the Jiangsu Key Laboratory of Coast Ocean Resources Development and Environment Security (Grant no. JSCE201508 ). Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd. All rights reserved.",

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doi = "10.1016/j.oceaneng.2016.02.032",

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T1 - Numerical study of infragravity waves amplification during harbor resonance

AU - Gao, Junliang

AU - Ji, Chunyan

AU - Gaidai, Oleg

AU - Liu, Yingyi

N1 - Funding Information: This work was financially supported by the National Natural Science Foundation of China (Grant nos. 11172058 , 51221961 , 51422901 ), the Jiangsu Key Laboratory of Advanced Design and Manufacturing Technology for Ship (Grant no. CJ1604 ) and the Jiangsu Key Laboratory of Coast Ocean Resources Development and Environment Security (Grant no. JSCE201508 ). Publisher Copyright: © 2016 Elsevier Ltd. All rights reserved.

PY - 2016/4/1

Y1 - 2016/4/1

N2 - The infragravity (IG) period oscillations inside an elongated rectangular harbor excited by bichromatic wave groups are simulated using a fully nonlinear Boussinesq model. Based on an IG wave analysis technique, this study presents a comprehensive investigation on how bound and free IG waves and their relative components change with respect to the amplitudes and wavelengths of incident primary (short) waves under the condition of the lowest four resonant modes. For the given harbor and ranges of wavelength and amplitude of the primary waves studied in this paper, it is shown that the amplitudes of both the bound and free IG waves become more evident when the short wavelengths increase, and the latter are always larger than the former due to resonant amplification. The amplitudes of both the bound and free IG waves change quadratically with the amplitudes of the incident short waves.

AB - The infragravity (IG) period oscillations inside an elongated rectangular harbor excited by bichromatic wave groups are simulated using a fully nonlinear Boussinesq model. Based on an IG wave analysis technique, this study presents a comprehensive investigation on how bound and free IG waves and their relative components change with respect to the amplitudes and wavelengths of incident primary (short) waves under the condition of the lowest four resonant modes. For the given harbor and ranges of wavelength and amplitude of the primary waves studied in this paper, it is shown that the amplitudes of both the bound and free IG waves become more evident when the short wavelengths increase, and the latter are always larger than the former due to resonant amplification. The amplitudes of both the bound and free IG waves change quadratically with the amplitudes of the incident short waves.

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DO - 10.1016/j.oceaneng.2016.02.032

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SN - 0029-8018

VL - 116

SP - 90

EP - 100

JO - Ocean Engineering

JF - Ocean Engineering

ER -

Numerical study of infragravity waves amplification during harbor resonance

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