Mathematical Framework for Hydromechanical Time-Domain Simulation of Wave Energy Converters

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dc.contributor.authorMedeiros, J. Seixas deen
dc.contributor.authorBrizzolara, Stefanoen
dc.contributor.departmentAerospace and Ocean Engineeringen
dc.date.accessioned2018-04-30T12:31:51Zen
dc.date.available2018-04-30T12:31:51Zen
dc.date.issued2018-01-17en
dc.date.updated2018-04-29T08:39:44Zen
dc.description.abstractEfficient design of wave energy converters based on floating body motion heavily depends on the capacity of the designer to accurately predict the device’s dynamics, which ultimately leads to the power extraction. We present a (quasi-nonlinear) time-domain hydromechanical dynamic model to simulate a particular type of pitch-resonant WEC which uses gyroscopes for power extraction. The dynamic model consists of a time-domain three-dimensional Rankine panel method coupled, during time integration, with a MATLAB algorithm that solves for the equations of the gyroscope and Power Take-Off (PTO). The former acts as a force block, calculating the forces due to the waves on the hull, which is then sent to the latter through TCP/IP, which couples the external dynamics and performs the time integration using a 4th-order Runge-Kutta method. The panel method, accounting for the gyroscope and PTO dynamics, is then used for the calculation of the optimal flywheel spin, PTO damping, and average power extracted, completing the basic design cycle of the WEC. The proposed numerical method framework is capable of considering virtually any type of nonlinear force (e.g., nonlinear wave loads) and it is applied and verified in the paper against the traditional frequency domain linear model. It proved to be a versatile tool to verify performance in resonant conditions.en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationJ. Seixas de Medeiros and S. Brizzolara, “Mathematical Framework for Hydromechanical Time-Domain Simulation of Wave Energy Converters,” Mathematical Problems in Engineering, vol. 2018, Article ID 1710253, 15 pages, 2018. doi:10.1155/2018/1710253en
dc.identifier.doihttps://doi.org/10.1155/2018/1710253en
dc.identifier.urihttp://hdl.handle.net/10919/82939en
dc.language.isoenen
dc.publisherHindawien
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.holderCopyright © 2018 J. Seixas de Medeiros and S. Brizzolara. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.en
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.titleMathematical Framework for Hydromechanical Time-Domain Simulation of Wave Energy Convertersen
dc.title.serialMathematical Problems in Engineeringen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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