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- Ruehl and Bull
In order to promote and support development of the wave energy industry, Sandia National Laboratories (SNL) has developed a Wave Energy Development Roadmap. The Wave Energy Development Roadmap outlines the pathway from initial design to commercialization for Wave Energy Converter (WEC) technologies. Commercialization of a wave energy technology is embodied in the deployment of an array of WEC'…
- Tom et al.
This paper details the development and validation of a numerical model of the Wavestar wave energy converter (WEC) developed in WEC-Sim. This numerical model was developed in support of the WEC Control Competition (WECCCOMP), a competition with the objective of maximizing WEC performance over costs through innovative control strategies. WECCCOMP has two stages: numerical implementation of…
- Ruehl et al.
The Wave Energy Converter Simulator (WEC-Sim) is an open-source code jointly developed by Sandia National Laboratories and the National Renewable Energy Laboratory. It is used to model wave energy converters subjected to operational and extreme waves. In order for the WEC-Sim code to be beneficial to the wave energy community, code verification and physical model validation is necessary. This…
- Ruehl et al.
In this paper we provide an update on the status of the WEC-Sim project, both the code development and experimental testing efforts. Code development has been focused on adding features that improve the delity of the simulation including non-linear hydrostatic and excitation forces calculation, body-to-body interactions through coupled radiation forces, Morison drag, and more direct modeling…
- Lawson et al.
In 2013 the National Renewable Energy Laboratory (NREL) and Sandia National Laboratories (SNL) initiated the WEC-Sim project with the objective of developing a verified and validated open-source wave energy converter (WEC) simulation tool to promote and support the wave energy industry and research community. To achieve this objective, NREL and SNL identified three main tasks. (1) Develop WEC-…
- Yu et al.
The National Renewable Energy Laboratory (NREL) and Sandia National Laboratories (SNL) have developed WEC-Sim to provide the wave energy converter (WEC) design community with an open-source simulation tool. WEC-Sim models the system dynamics of WEC devices using multibody dynamics methods and simulates hydrodynamic forces using coefficients predicted from potential flow models. In this paper…
- Yu et al.
WEC-Sim (Wave Energy Converter SIMulator) is an open-source code for simulating wave energy converters, jointly developed by National Renewable Energy Laboratory and Sandia laboratories in the United States. WEC-Sim is developed in MATLAB/SIMULINK with Simscape Multibody, which solves the multi-body dynamics of the system. A brief overview on the methodology and the capability of the WEC-Sim…
- Ruehl et al.
Preliminary Verification and Validation of WEC-Sim, an Open-Source Wave Energy Converter Design Tool
To promote and support the wave energy industry, a wave energy converter (WEC) design tool, WEC-Sim, is being developed by Sandia National Laboratories and the National Renewable Energy Laboratory. In this paper, the WEC-Sim code is used to model a point absorber WEC designed by the U.S. Department of Energy's reference model project. Preliminary…
- Bosma et al.
In the wave energy industry, there is a need for open source numerical codes and publicly available experimental data, both of which are being addressed through the development of WEC-Sim by Sandia National Laboratories and the National Renewable Energy Laboratory (NREL). WEC-Sim is an open source code used to model wave energy converters (WECs) when subject to incident waves. In order for the…
- So et al.
WEC-Sim (Wave Energy Converter-SIMulator) is an open-source wave energy converter (WEC) code capable of simulating WECs of arbitrary device geometry subject to operational waves. The code is developed in MATLAB/Simulink using the multi-body dynamics solver SimMechanics, and relies on Boundary Element Method (BEM) codes to obtain hydrodynamic coefficients such as added mass, radiation damping,…
- Lawson et al.
Wave energy converters (WECs) are commonly designed and analyzed using numerical models that combine multibody dynamics with hydrodynamic models based on the Cummins equation and linearized hydrodynamic coefficients. These modeling methods are attractive design tools because they are computationally inexpensive and do not require the use of high-performance computing resources necessitated by…
- Driscoll et al.
The sharing of knowledge, experience, and lessons learned facilitates solving common problems and accelerating the development of the MRE industry. In order to increase the dissemination of such information, the US Department of Energy, through its national laboratories has engaged the international MRE community to understand online information needs. Six thematic needs were determined:…
- Ruehl et al.
The field of marine and hydrokinetic energy(or marine renewable energy) includes technologies used to convert the energy of waves, tides, currents and ocean thermal gradients primarily into electricity. Compared to traditional energy generation sources, and more established renewables (such as wind and solar), marine and hydrokinetic energy is in the early stages of development(corresponding…
- Weers et al.
The Marine Renewable Energy (MRE) industry is in the early stages of development corresponding to low technology readiness levels (TRLs) where the ability of the MRE community (developers, researchers, academics, stakeholders, investors, and regulators) to work together to share knowledge, experience, and lessons learned is critical to the advancement of the entire MRE industry. Through…
- Forbush et al.
A passive yaw implementation is developed, validated, and explored for the WEC-Sim, an open-source wave energy converter modeling tool that works within MATLAB/Simulink. The
Reference Model 5 (RM5) is selected for this investigation, and a WEC-Sim model of the device is modified to allow yaw motion. A boundary element method (BEM) code was used to calculate the excitation force… - Ruehl et al.
This paper focuses on the role of the Marine Renewable Energy (MRE) Software Knowledge Hub on the Portal and Repository for Information on Marine Renewable Energy (PRIMRE). The MRE Software Knowledge Hub provides online services for MRE software users and developers, and seeks to develop assessments and recommendations for improving MRE software in the future. Online software discovery…
- Copping et al.
Launched in 2019, the Portal and Repository for Information on Marine Renewable Energy (PRIMRE) provides centralized access, standardization, community building, and integration of United States (U.S.) databases, tools and codes, and other resources that cover a range of marine energy information. The PRIMRE universe contains a series of Knowledge Hubs that represent data and information on…
- Ringwood et al.
This paper outlines a proposed open competition which will compare energy-maximising controllers for wave energy converters (WECs), both in simulation, and in real time, using a scale device in a tank test situation. To date, a wide variety of WEC control algorithms have been proposed, but have been difficult to compare due to differences in the simulation/scale models they are evaluated on,…
- Combourieu et al.
This paper describes the recently launched Wave Energy Converter Code Comparison (WEC3) project and present preliminary results from this effort. The objectives of WEC3 are to verify and validate numerical modelling tools that have been developed specifically to simulate wave energy conversion devices and to inform the upcoming IEA OES Annex VI Ocean Energy Modelling Verification and…
- Driscoll et al.
The United States’ Department of Energy’s Wave Energy Prize (the Prize) contest encouraged the development of innovative deep-water wave energy technologies that at least doubled device performance above the 2014 state-of-the-art. The prize developed the ACE and HPQ metrics as a proxy for LCOE that provide an equitable comparison of low Technology Readiness Level (TRL) Wave Energy Converter (…
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