Boundary Element Methods are extensively used to model hydrodynamic
forces in offshore devices like ships, offshore wind platforms and wave
energy converters. These solvers use device geometry mesh to get some
hydrodynamics coefficients as radiation damping, added mass, wave
diffraction force, and wave excitation force. All these data is saved in
file formats incompatible between them. These may avoid to use the
coefficients between programs.
BEMRosetta allows to load the hydrodynamic coefficients from a format
saving it in another. In addition it allows to compare the results
obtained between programs, the results between similar geometries and
the same geometry with different discretization levels.
In addition, BEMRosetta allows to view and visually compare the meshes from different programs.
DTOcean, which stands for Optimal Design Tools for Ocean Energy Arrays, aims at at accelerating the industrial development of ocean energy power generation knowledge, and providing design tools for deploying the first generation of wave and tidal energy converter arrays. It gathers 18 partners from 11 countries (Ireland, Spain, United Kingdom, Germany, Portugal, France, Norway, Denmark, Sweden, Belgium and United States of America) under the coordination of the University of Edinburgh.
DTOcean work planning has been implemented as five content-orientated Work Packages (Hydrodynamics, Electrical Sub-systems, Moorings & Foundations, Installation and Operations & Maintenance) guided by two defining work packages (Scenarios and Management & Coordination) which set the underpinning scope in relation to a range of array sizes and hydrodynamic layouts. The outputs, feedbacks and interactions within these culminate in the Integration Work Package where the design tools are actually developed.
The newly released, open-source, integrated DTOcean v1.0 software package can be downloaded here.
MoorDyn is a lumped-mass mooring line model designed for easy coupling with other software (i.e. floating platform models). It supports arbitrary line interconnections, clump weights and floats, and different line properties. The model accounts for internal axial stiffness and damping forces, weight and buoyancy forces, hydrodynamic forces from Morison’s equation, and vertical spring-damper forces from contact with the seabed.
The original version is written in C++ and has been successfully coupled with FAST v7 and other tools/models in Matlab and Simulink. A separate Fortran-based version has recently been incorporated into FAST v8 (nwtc.nrel.gov/FAST8). More information and downloads can be found at www.matt-hall.ca/software/moordyn.
Wave energy converters (WECs) will be deployed in groups or “wave farms”. The hydrodynamic interactions between WECs in a wave farm (i.e. how waves that are absorbed, scattered, or radiated by one WEC affect the others) will have siginificant impacts on the overall power performance of the wave farm.
Open source to the rescue!The authors have chosen to share the wave farm code used in the paper for free. The Matlab package that they developed, including examples of WEC array performance, can be found on GitHub:
The authors chose to release the code to increase the impact of the work. The code is already being used by another researcher at Oregon State University as part of his wave farm design optimization work and is being evaluated for use by the International DTOcean project, which “aims at accelerating the industrial development of ocean energy power generation knowledge, and providing design tools for deploying the first generation of wave and tidal energy converter arrays.”
The EcoEnergyII consortium has the pleasure to announce the release of PySeidon. PySeidon is a open-source Python-based package gathering specific analysis functions for measured and simulated data for the attention of tidal energy community and FVCOM users. This package can be downloaded from this link