Advanced Features and Recent Developments in the WEC-Sim Open-Source Design Tool: Preprint

Jorge Leon, Jeff Grasberger, Dominic Forbush, Massimo Sirigu, Matthieu Ancellin, Nathan Tom, Adam Keester, Kelley Ruehl, David Ogden, Salman Husain

Research output: Contribution to conferencePaper


WEC-Sim is an open-source tool developed in Matlab/Simulink to simulate wave energy converters. WEC-Sim has been developed jointly by the National Renewable Energy Laboratory (NREL) and Sandia National Laboratories (SNL) since its initial release in 2014. WEC-Sim simulations are performed in the time domain based on the radiation and diffraction method using hydrodynamics coefficients derived from boundary element method (BEM)-based frequency-domain potential flow solvers (e.g., WAMIT, NEMOH, Capytaine, or ANSYS-AQWA). Within this level of modeling fidelity, WEC-Sim can handle floating body hydrodynamics, mechanical and electrical power generation methods, advanced control implementation, mooring systems, and other unique applications such as desalination. WEC-Sim functionalities are developed using Simulink blocks and Matlab functions. WEC-Sim is capabilities include simulation of different wave conditions, constraints and PTOs, body dynamics, mooring systems, among other advanced features such as nonlinear hydrodynamics, nonlinear PTOs, body-to-body interactions, etc.
Original languageAmerican English
Number of pages8
StatePublished - 2024
EventPanAmerican Marine Energy Conference (PAMEC) - Barranquilla, Columbia
Duration: 22 Jan 202424 Jan 2024


ConferencePanAmerican Marine Energy Conference (PAMEC)
CityBarranquilla, Columbia

NREL Publication Number

  • NREL/CP-5700-86894


  • hydrodynamics modeling
  • mooring
  • multibody dynamics
  • power take-off
  • wave energy converter
  • WEC-Sim


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