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dc.contributor.authorGupta, Ven
dc.contributor.authorYoung, Annaen
dc.date.accessioned2017-06-01T09:17:07Z
dc.date.available2017-06-01T09:17:07Z
dc.date.issued2017-08-25en
dc.identifier.issn0022-1120
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/264560
dc.description.abstractIn order to make the extraction of tidal current energy economically viable, the power production per turbine must be optimised in each tidal array. Furthermore, the impact of power extraction on the marine flow environment must be understood. These two aims mean that designers must be able to model different configurations of a tidal array in order to create the most efficient, least invasive arrangement. In this paper, an analytical model is developed for array design in idealised rectangular tidal channels with idealised turbines. The model includes the effects of (i) local blockage, (ii) surface deformation, and (iii) added drag due to the installation of the array. While these effects have been accounted for individually in past work, the model presented here is the first to include all three such that the interaction between different effects can be understood. Results are presented for optimal local blockage and turbine resistance as functions of inherent channel drag coefficient, channel length, and Froude number at various global blockage values. It will be shown that it is necessary to model the effects of local blockage and added drag simultaneously in order to obtain the design parameters of a tidal array (global blockage, local blockage, and turbine resistance), which will maximise the power extraction per turbine. Neglecting either effect will lead to an array design with lower power extraction than the optimum, the addition of unnecessary extra turbines, and higher lost power from the array.
dc.description.sponsorshipThe work was mainly funded by the Newton Fund through EPSRC, UK (EP/M019896/1). The first author was supported by NSFC, China (grant number 11672123) during the later stages of this research.
dc.language.isoenen
dc.publisherCambridge University Press
dc.titleA one-dimensional model for tidal array design based on three-scale dynamicsen
dc.typeArticle
prism.endingPage676
prism.publicationDate2017en
prism.publicationNameJournal of Fluid Mechanicsen
prism.startingPage651
prism.volume825en
dc.identifier.doi10.17863/CAM.10127
dcterms.dateAccepted2017-05-18en
rioxxterms.versionofrecord10.1017/jfm.2017.399en
rioxxterms.versionAMen
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2017-08-25en
dc.contributor.orcidYoung, Anna [0000-0002-3517-5850]
dc.identifier.eissn1469-7645
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idEPSRC (EP/M019896/1)
cam.issuedOnline2017-07-21en


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