Measurement of the dispersion relation for random surface gravity waves

Tore Magnus A. Taklo; Karsten Trulsen; Odin Gramstad; Harald E. Krogstad; Atle Jensen

doi:10.1017/jfm.2015.25

Measurement of the dispersion relation for random surface gravity waves

Tore Magnus A. Taklo, Karsten Trulsen, Odin Gramstad, Harald E. Krogstad, Atle Jensen

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21 Scopus citations

Abstract

We report laboratory experiments and numerical simulations of the Zakharov equation, designed to have sufficient resolution in space and time to measure the dispersion relation for random surface gravity waves. The experiments and simulations are carried out for a JONSWAP spectrum and Gaussian spectra of various bandwidths on deep water. It is found that the measured dispersion relation deviates from the linear dispersion relation above the spectral peak when the bandwidth is sufficiently narrow.

Original language	English (US)
Pages (from-to)	326-336
Number of pages	11
Journal	Journal of Fluid Mechanics
Volume	766
DOIs	https://doi.org/10.1017/jfm.2015.25
State	Published - Mar 2015
Externally published	Yes

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Keywords

Surface gravity waves
waves/free-surface flows

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10.1017/jfm.2015.25

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abstract = "We report laboratory experiments and numerical simulations of the Zakharov equation, designed to have sufficient resolution in space and time to measure the dispersion relation for random surface gravity waves. The experiments and simulations are carried out for a JONSWAP spectrum and Gaussian spectra of various bandwidths on deep water. It is found that the measured dispersion relation deviates from the linear dispersion relation above the spectral peak when the bandwidth is sufficiently narrow.",

keywords = "Surface gravity waves, waves/free-surface flows",

author = "Taklo, {Tore Magnus A.} and Karsten Trulsen and Odin Gramstad and Krogstad, {Harald E.} and Atle Jensen",

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year = "2015",

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doi = "10.1017/jfm.2015.25",

language = "English (US)",

volume = "766",

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T1 - Measurement of the dispersion relation for random surface gravity waves

AU - Taklo, Tore Magnus A.

AU - Trulsen, Karsten

AU - Gramstad, Odin

AU - Krogstad, Harald E.

AU - Jensen, Atle

PY - 2015/3

Y1 - 2015/3

N2 - We report laboratory experiments and numerical simulations of the Zakharov equation, designed to have sufficient resolution in space and time to measure the dispersion relation for random surface gravity waves. The experiments and simulations are carried out for a JONSWAP spectrum and Gaussian spectra of various bandwidths on deep water. It is found that the measured dispersion relation deviates from the linear dispersion relation above the spectral peak when the bandwidth is sufficiently narrow.

AB - We report laboratory experiments and numerical simulations of the Zakharov equation, designed to have sufficient resolution in space and time to measure the dispersion relation for random surface gravity waves. The experiments and simulations are carried out for a JONSWAP spectrum and Gaussian spectra of various bandwidths on deep water. It is found that the measured dispersion relation deviates from the linear dispersion relation above the spectral peak when the bandwidth is sufficiently narrow.

KW - Surface gravity waves

KW - waves/free-surface flows

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EP - 336

JO - Journal of Fluid Mechanics

JF - Journal of Fluid Mechanics

ER -

Measurement of the dispersion relation for random surface gravity waves

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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