An efficient domain decomposition strategy for wave loads on surface piercing circular cylinders

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

A fully nonlinear domain decomposed solver is proposed for efficient computations of wave loads on surface piercing structures in the time domain. A fully nonlinear potential flow solver was combined with a fully nonlinear Navier–Stokes/VOF solver via generalized coupling zones of arbitrary shape. Sensitivity tests of the extent of the inner Navier–Stokes/VOF domain were carried out. Numerical computations of wave loads on surface piercing circular cylinders at intermediate water depths are presented. Four different test cases of increasing complexity were considered; 1) weakly nonlinear regular waves on a sloping bed, 2) phase-focused irregular waves on a flat bed, 3) irregular waves on a sloping bed and 4) multidirectional irregular waves on a sloping bed. For all cases, the free surface elevation and the inline force were successfully compared against experimental measurements.
Original languageEnglish
JournalCoastal engineering
Volume86
Issue number17
Pages (from-to)57-76
ISSN0378-3839
DOIs
Publication statusPublished - 2014

Keywords

  • Domain decomposition
  • Computational fluid dynamics
  • Potential flow
  • Free surface flows
  • Wave loads on circular cylinders
  • Multi-directional waves

Cite this