Fluid–structure interaction simulation of floating structures interacting with complex, large-scale ocean waves and atmospheric turbulence with application to floating offshore wind turbines

Antoni Calderer, Xin Guo, Lian Shen, Fotis Sotiropoulos

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

We develop a numerical method for simulating coupled interactions of complex floating structures with large-scale ocean waves and atmospheric turbulence. We employ an efficient large-scale model to develop offshore wind and wave environmental conditions, which are then incorporated into a high resolution two-phase flow solver with fluid–structure interaction (FSI). The large-scale wind–wave interaction model is based on a two-fluid dynamically-coupled approach that employs a high-order spectral method for simulating the water motion and a viscous solver with undulatory boundaries for the air motion. The two-phase flow FSI solver is based on the level set method and is capable of simulating the coupled dynamic interaction of arbitrarily complex bodies with airflow and waves. The large-scale wave field solver is coupled with the near-field FSI solver with a one-way coupling approach by feeding into the latter waves via a pressure-forcing method combined with the level set method. We validate the model for both simple wave trains and three-dimensional directional waves and compare the results with experimental and theoretical solutions. Finally, we demonstrate the capabilities of the new computational framework by carrying out large-eddy simulation of a floating offshore wind turbine interacting with realistic ocean wind and waves.

Original languageEnglish (US)
Pages (from-to)144-175
Number of pages32
JournalJournal of Computational Physics
Volume355
DOIs
StatePublished - Feb 15 2018

Bibliographical note

Funding Information:
This work has been supported by the U.S. Department of Energy ( DE-EE 0005482 ), the US National Science Foundation ( CBET-1341062 and CBET-1622314 ), the Office of Naval Research ( N00244-14-2-008 ), and the University of Minnesota Initiative for Renewable Energy and the Environment . The computational resources were provided by the Minnesota Supercomputing Institute and Sandia National Laboratories.

Keywords

  • Fluid–structure interaction
  • Large-eddy simulation
  • Level set method
  • Two-phase free surface flow
  • Wave
  • Wind

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