Numerical and experimental investigation of extreme events in JONSWAP seas

Guillaume Ducrozet, Alessandro Toffoli, Amin Chabchoub

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference contributionScientificvertaisarvioitu

Abstrakti

The dynamics of nonlinear water waves and extreme waves in particular can be accurately investigated numerically using a numerical wave tank (NWT), implemented by the higher-order spectral method (HOS). In fact, a number of laboratory studies validated the proposed numerical approach, while a very high validation accuracy is reached. We present a numerical study based on a HOS-NWT scheme in the investigation of the one-dimensional propagation of extreme events in JONSWAP seas, having their origin from exact breather solutions of the nonlinear Schrödinger equation. Indeed, breathers are known to model extreme waves, when the wave field's spectrum is assumed to be narrow-banded. On the other hand recent experimental studies confirmed that these localized structures can also evolve, when wind or significant perturbations are at play. We will investigate the validity of the proposed numerical scheme by comparing the simulation results to laboratory data. The dynamics of both wave fields show indeed a very good agreement.

AlkuperäiskieliEnglanti
OtsikkoProceedings of the 28th International Ocean and Polar Engineering Conference, ISOPE 2018
KustantajaINTERNATIONAL SOCIETY OF OFFSHORE AND POLAR ENGINEERS
Sivut392-396
Sivumäärä5
Vuosikerta2018-June
ISBN (painettu)9781880653876
TilaJulkaistu - 1 tammikuuta 2018
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisuussa
TapahtumaInternational Ocean and Polar Engineering Conference - Sapporo, Japani
Kesto: 10 kesäkuuta 201815 kesäkuuta 2018
Konferenssinumero: 28

Conference

ConferenceInternational Ocean and Polar Engineering Conference
LyhennettäISOPE
Maa/AlueJapani
KaupunkiSapporo
Ajanjakso10/06/201815/06/2018

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