Large eddy simulation of wave overtopping on nonuniform cartesian cut-cell grids

Tingqiu Li, Peter Troch, Julien De Rouck

Research output: Contribution to journalConference articlepeer-review

7 Scopus citations

Abstract

Overtopping of water waves over the crest of vertical and sloping coastal structures is simulated with large-eddy simulation (LES) in this paper. The computations are conducted in a numerical wave tank, based on our recently developed solver. It involves a time-implicit cell-staggered approximately-factored volume-of-fluid (VOF) finite volume (FV) approach on a nonuniform Cartesian cut-cell grid. Additionally, the Godunov-type high-order up-wind schemes are introduced for discretization of the convective fluxes, while the coupling of the pressure with the velocity is realized by a projection method. A static Smagorinsky model and dynamic one are used for description of the subgrid-scale (SGS) stress. The surface tension effects are considered as a body force according to the continuous surface force manner. When flows are driven by a wave generator located at the inlet, the results for regular and irregular waves indicate that the LES technique predicts most of the significant features of the breaking waves during overtopping process. By comparison, computations agree well with measurements available under grid refinements.

Original languageEnglish (US)
Pages (from-to)276-284
Number of pages9
JournalProceedings of the International Offshore and Polar Engineering Conference
StatePublished - Dec 1 2004
Externally publishedYes
EventThe Fourteenth International Offshore and Polar Engineering Conference - ISOPE 2004 - Toulon, France
Duration: May 23 2004May 28 2004

Keywords

  • A dynamic Smagorinsky model and a nonuniform Cartesian cut-cell mesh
  • An implicit finite volume VOF-based solver
  • LES of overtopping of breaking waves

ASJC Scopus subject areas

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

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