Numerical simulation of wind effects on the evolution of freak waves

Qing-Ping Zou, Hai-Fei Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)
21 Downloads (Pure)

Abstract

The wind effects on the evolution of a 2D dispersive focusing wave group are investigated using a two-phase flow model, which solves the Navier-Stokes equations for both air and water and captures the interface using the Volume of Fluid method. The turbulence is modeled by the standard Smagorinsky subgrid-scale stress model. The model predictions compare well with the experimental data without and with following wind action. Our model results show that the presence of following wind delays the wave group's focusing process and shifts the focus point downstream, while the presence of opposing wind slightly speeds up the focusing process and shifts the focus point upstream. The separate effects of wind-driven surface layer current on the wave group's evolution are examined. While both the depth-uniform and the strongly sheared drift current ould cause the same shift of the focus point, the latter current leads to better agreement with the experimental data.

Original languageEnglish
Title of host publicationProceedings of the 26th International Ocean and Polar Engineering Conference
PublisherInternational Society of Offshore and Polar Engineers
Pages635-640
Number of pages6
ISBN (Electronic)9781880653883
Publication statusPublished - Jan 2016
Event26th Annual International Ocean and Polar Engineering Conference 2016 - Rhodes, Greece
Duration: 26 Jun 20161 Jul 2016

Conference

Conference26th Annual International Ocean and Polar Engineering Conference 2016
Abbreviated titleISOPE 2016
CountryGreece
CityRhodes
Period26/06/161/07/16

Keywords

  • Drift current
  • Focusing wave group
  • Freak wave
  • Two-phase flow
  • Wind effect

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering

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