The constrained optimisation of small linear arrays of heaving point absorbers. Part I: The influence of spacing

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dc.contributor.author McGuinness, Justin P. L.
dc.contributor.author Thomas, Gareth P.
dc.date.accessioned 2017-10-05T14:37:23Z
dc.date.available 2017-10-05T14:37:23Z
dc.date.issued 2017-07-18
dc.identifier.citation McGuinness, J. P. L. and Thomas, G. (2017) 'The constrained optimisation of small linear arrays of heaving point absorbers. Part I: The influence of spacing', International Journal of Marine Energy, In Press. doi:10.1016/j.ijome.2017.07.005 en
dc.identifier.startpage 1 en
dc.identifier.endpage 12 en
dc.identifier.issn 2214-1669
dc.identifier.uri http://hdl.handle.net/10468/4839
dc.identifier.doi 10.1016/j.ijome.2017.07.005
dc.description.abstract This paper describes the optimisation of small arrays of Wave Energy Converters (WECs) of point absorber type. The WECs are spherical in shape and operate in heave alone and a linear array of five devices is considered. Previous work is extended by considering the constrained performance of the array members, where an uaniper limit on WEC displacements is enforced. Two opimisations are performed. In each case, the objective function is defined as the mean of the averaged interaction factor ovehe non-dimensional length of the array. The first considers the array layout fixed at a geometry previously identified as optimal in an unconstrained regime and optimises the displacements of the WECs subject to constraints. The second allows both the WEC positions and displacements to vary as optimisation variables. It is shown that the optimal layout of the constrained arrays is different from the unconstrained case. Applying constrained motions results in optimal layouts that are more separated, with less grouping of WECs and this will have practical considerations. The effect of the constraints varies depending on the incident wave angle. In some cases, performance is reduced drastically and stability of performance is improved, while in other cases there is a degradation of performance. Thus, a trade-off between performance and stability of performance is seen when displacement constraints are applied. en
dc.description.sponsorship Irish Research Council (Government of Ireland Postgraduate Scholarship (GOIPG/2013/1197)) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Elsevier en
dc.relation.uri http://www.sciencedirect.com/science/article/pii/S2214166917300607
dc.rights © 2017 Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0 license en
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/4.0/ en
dc.subject Wave-power en
dc.subject Arrays en
dc.subject Constrained optimisation en
dc.subject Interaction en
dc.subject Point absorber en
dc.title The constrained optimisation of small linear arrays of heaving point absorbers. Part I: The influence of spacing en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Gareth Thomas, Mathematical Sciences, University College Cork, Cork, Ireland. +353-21-490-3000 Email: g.thomas@ucc.ie en
dc.internal.availability Full text available en
dc.check.info Access to this article is restricted for 24 months after publication by request of the publisher. en
dc.check.date 2019-07-18
dc.date.updated 2017-10-05T14:30:57Z
dc.description.version Accepted Version en
dc.internal.rssid 413703814
dc.contributor.funder Irish Research Council en
dc.description.status Peer reviewed en
dc.identifier.journaltitle International Journal of Marine Energy en
dc.internal.copyrightchecked No !!CORA!! en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress g.thomas@ucc.ie en
dc.internal.IRISemailaddress g.thomas@ucc.ie en


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© 2017 Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0 license Except where otherwise noted, this item's license is described as © 2017 Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
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