A nonlinear extension for linear boundary element methods in wave energy device modelling
To date, mathematical models for wave energy devices typically follow Cummins equation, with hydrodynamic parameters determined using boundary element methods. The resulting models are, for the vast majority of cases, linear, which has advantages for ease of computation and a basis for control desig...
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ftunivmaynooth:oai:mural.maynoothuniversity.ie:3866 2023-05-15T14:25:19+02:00 A nonlinear extension for linear boundary element methods in wave energy device modelling Mérigaud, Alexis Gilloteaux, Jean-Christophe Ringwood, John 2012 application/pdf https://mural.maynoothuniversity.ie/3866/ https://mural.maynoothuniversity.ie/3866/1/JR_Nonlinear_Extension.pdf en eng https://mural.maynoothuniversity.ie/3866/1/JR_Nonlinear_Extension.pdf Mérigaud, Alexis and Gilloteaux, Jean-Christophe and Ringwood, John (2012) A nonlinear extension for linear boundary element methods in wave energy device modelling. In: 31st International Conference on Ocean, Offshore and Arctic Engineering OMAE2012, July 1-6, 2012, Rio de Janeiro, Brazil. Electronic Engineering Conference or Workshop Item PeerReviewed 2012 ftunivmaynooth 2022-06-13T18:42:54Z To date, mathematical models for wave energy devices typically follow Cummins equation, with hydrodynamic parameters determined using boundary element methods. The resulting models are, for the vast majority of cases, linear, which has advantages for ease of computation and a basis for control design to maximise energy capture. While these linear models have attractive properties, the assumptions under which linearity is valid are restrictive. In particular, the assumption of small movements about an equilibrium point, so that higher order terms are not significant, needs some scrutiny. While this assumption is reasonable in many applications, in wave energy the main objective is to exaggerate the movement of the device through resonance, so that energy capture can be maximised. This paper examines the value of adding specific nonlinear terms to hydrodynamic models for wave energy devices, to improve the validity of such models across the full operational spectrum. Conference Object Arctic Maynooth University ePrints and eTheses Archive (National University of Ireland) |
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Maynooth University ePrints and eTheses Archive (National University of Ireland) |
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ftunivmaynooth |
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English |
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Electronic Engineering |
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Electronic Engineering Mérigaud, Alexis Gilloteaux, Jean-Christophe Ringwood, John A nonlinear extension for linear boundary element methods in wave energy device modelling |
topic_facet |
Electronic Engineering |
description |
To date, mathematical models for wave energy devices typically follow Cummins equation, with hydrodynamic parameters determined using boundary element methods. The resulting models are, for the vast majority of cases, linear, which has advantages for ease of computation and a basis for control design to maximise energy capture. While these linear models have attractive properties, the assumptions under which linearity is valid are restrictive. In particular, the assumption of small movements about an equilibrium point, so that higher order terms are not significant, needs some scrutiny. While this assumption is reasonable in many applications, in wave energy the main objective is to exaggerate the movement of the device through resonance, so that energy capture can be maximised. This paper examines the value of adding specific nonlinear terms to hydrodynamic models for wave energy devices, to improve the validity of such models across the full operational spectrum. |
format |
Conference Object |
author |
Mérigaud, Alexis Gilloteaux, Jean-Christophe Ringwood, John |
author_facet |
Mérigaud, Alexis Gilloteaux, Jean-Christophe Ringwood, John |
author_sort |
Mérigaud, Alexis |
title |
A nonlinear extension for linear boundary element methods in wave energy device modelling |
title_short |
A nonlinear extension for linear boundary element methods in wave energy device modelling |
title_full |
A nonlinear extension for linear boundary element methods in wave energy device modelling |
title_fullStr |
A nonlinear extension for linear boundary element methods in wave energy device modelling |
title_full_unstemmed |
A nonlinear extension for linear boundary element methods in wave energy device modelling |
title_sort |
nonlinear extension for linear boundary element methods in wave energy device modelling |
publishDate |
2012 |
url |
https://mural.maynoothuniversity.ie/3866/ https://mural.maynoothuniversity.ie/3866/1/JR_Nonlinear_Extension.pdf |
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Arctic |
genre_facet |
Arctic |
op_relation |
https://mural.maynoothuniversity.ie/3866/1/JR_Nonlinear_Extension.pdf Mérigaud, Alexis and Gilloteaux, Jean-Christophe and Ringwood, John (2012) A nonlinear extension for linear boundary element methods in wave energy device modelling. In: 31st International Conference on Ocean, Offshore and Arctic Engineering OMAE2012, July 1-6, 2012, Rio de Janeiro, Brazil. |
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1766297741439270912 |