RANS Simulation of the Heave Response of a Two-Body Floating Point Wave Absorber: Preprint

Research output: Contribution to conferencePaper


A preliminary study on a two-body floating wave absorbers is presented in this paper. A Reynolds-Averaged Navier-Stokes computational method is applied for analyzing the hydrodynamic heave response of the absorber in operational wave conditions. The two-body floating wave absorber contains a float section and a submerged reaction section. For validation purposes, our model is first assumed to belocked. The two sections are forced to move together with each other. The locked single body model is used in a heave decay test, where the RANS result is validated with the experimental measurement. For the two-body floating point absorber simulation, the two sections are connected through a mass-spring-damper system, which is applied to simulate the power take-off mechanism under design waveconditions. Overall, the details of the flow around the absorber and its nonlinear interaction with waves are investigated, and the power absorption efficiency of the two-body floating wave absorber in waves with a constant value spring-damper system is examined.
Original languageAmerican English
Number of pages10
StatePublished - 2011
EventISOPE 2011 - Maui, Hawaii
Duration: 19 Jun 201124 Jun 2011


ConferenceISOPE 2011
CityMaui, Hawaii

NREL Publication Number

  • NREL/CP-5000-50980


  • floating-point absorber (FPA)
  • free surface
  • heave
  • offshore wind turbines
  • power take off (PTO)
  • RANS simulation
  • Reynolds-averaged Navier-Stokes (RANS) equation
  • two-body floating point wave absorber
  • volume of fluid (VOF)
  • wave energy conversion (WEC)


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