Multi-DOF WEC Performance in Variable Bathymetry Regions Using a Hybrid 3D BEM and Optimization

Multi-DOF WEC Performance in Variable Bathymetry Regions Using a Hybrid 3D BEM and Optimization

In the present work a hybrid boundary element method is used, in conjunction with a coupled mode model and perfectly matched layer model, for obtaining the solution of the propagation/diffraction/radiation problems of floating bodies in variable bathymetry regions. The implemented methodology is fre...

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Bibliographic Details
Main Authors: Markos Bonovas, Kostas Belibassakis, Eugen Rusu
Format: Article
Language:English
Published: MDPI AG 2019-06-01
Series:Energies
Subjects:
renewable energy
marine environment
wave energy converters
variable depth effects
multi-DOF WECs
design optimization
Online Access:https://www.mdpi.com/1996-1073/12/11/2108
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spelling doaj-340e24cf00b643a68b71f593ee0fb6eb2020-11-24T21:20:56ZengMDPI AGEnergies1996-10732019-06-011211210810.3390/en12112108en12112108Multi-DOF WEC Performance in Variable Bathymetry Regions Using a Hybrid 3D BEM and OptimizationMarkos Bonovas0Kostas Belibassakis1Eugen Rusu2School of Naval Architecture and Marine Engineering, National Technical University of Athens, 15780 Athens, GreeceSchool of Naval Architecture and Marine Engineering, National Technical University of Athens, 15780 Athens, GreeceDepartment of Mechanical Engineering, University Dunarea de Jos of Galati, 800008 Galați, RomaniaIn the present work a hybrid boundary element method is used, in conjunction with a coupled mode model and perfectly matched layer model, for obtaining the solution of the propagation/diffraction/radiation problems of floating bodies in variable bathymetry regions. The implemented methodology is free of mild-slope assumptions and restrictions. The present work extends previous results concerning heaving floaters over a region of general bottom topography in the case of generally shaped wave energy converters (WECs) operating in multiple degrees of freedom. Numerical results concerning the details of the wave field and the power output are presented, and the effects of WEC shape on the optimization of power extraction are discussed. It is demonstrated that consideration of heave in combination with pitch oscillation modes leads to a possible increase of the WEC performance.https://www.mdpi.com/1996-1073/12/11/2108renewable energymarine environmentwave energy convertersvariable depth effectsmulti-DOF WECsdesign optimization
collection DOAJ
language English
format Article
sources DOAJ
author Markos Bonovas
Kostas Belibassakis
Eugen Rusu
spellingShingle Markos Bonovas
Kostas Belibassakis
Eugen Rusu
Multi-DOF WEC Performance in Variable Bathymetry Regions Using a Hybrid 3D BEM and Optimization
Energies
renewable energy
marine environment
wave energy converters
variable depth effects
multi-DOF WECs
design optimization
author_facet Markos Bonovas
Kostas Belibassakis
Eugen Rusu
author_sort Markos Bonovas
title Multi-DOF WEC Performance in Variable Bathymetry Regions Using a Hybrid 3D BEM and Optimization
title_short Multi-DOF WEC Performance in Variable Bathymetry Regions Using a Hybrid 3D BEM and Optimization
title_full Multi-DOF WEC Performance in Variable Bathymetry Regions Using a Hybrid 3D BEM and Optimization
title_fullStr Multi-DOF WEC Performance in Variable Bathymetry Regions Using a Hybrid 3D BEM and Optimization
title_full_unstemmed Multi-DOF WEC Performance in Variable Bathymetry Regions Using a Hybrid 3D BEM and Optimization
title_sort multi-dof wec performance in variable bathymetry regions using a hybrid 3d bem and optimization
publisher MDPI AG
series Energies
issn 1996-1073
publishDate 2019-06-01
description In the present work a hybrid boundary element method is used, in conjunction with a coupled mode model and perfectly matched layer model, for obtaining the solution of the propagation/diffraction/radiation problems of floating bodies in variable bathymetry regions. The implemented methodology is free of mild-slope assumptions and restrictions. The present work extends previous results concerning heaving floaters over a region of general bottom topography in the case of generally shaped wave energy converters (WECs) operating in multiple degrees of freedom. Numerical results concerning the details of the wave field and the power output are presented, and the effects of WEC shape on the optimization of power extraction are discussed. It is demonstrated that consideration of heave in combination with pitch oscillation modes leads to a possible increase of the WEC performance.
topic renewable energy
marine environment
wave energy converters
variable depth effects
multi-DOF WECs
design optimization
url https://www.mdpi.com/1996-1073/12/11/2108
work_keys_str_mv AT markosbonovas multidofwecperformanceinvariablebathymetryregionsusingahybrid3dbemandoptimization
AT kostasbelibassakis multidofwecperformanceinvariablebathymetryregionsusingahybrid3dbemandoptimization
AT eugenrusu multidofwecperformanceinvariablebathymetryregionsusingahybrid3dbemandoptimization
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