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dc.contributor.authorAbderrahaman-Elena, N
dc.contributor.authorGarcía-Mayoral, R
dc.date.accessioned2016-01-28T12:12:08Z
dc.date.available2016-01-28T12:12:08Z
dc.date.issued2016-04-29
dc.identifier.citationJournal of Physics: Conference Series 2016
dc.identifier.issn1742-6588
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/253523
dc.description.abstractDirect numerical simulations of turbulent flows over rough surfaces are conducted to investigate the physics of the transitionally rough regime. Different roughness sizes are analysed within the transitional regime, while keeping the shape of the surface geometry constant. To study the effect of roughness on the flow field, a novel decomposition is used to divide the velocity into two components: a turbulent, geometry-independent contribution, and a geometry-induced contribution, whose intensity is modulated by the overlying turbulence. In the onset of the transitionally rough regime, the turbulent component remains essentially unmodified, and it is anticipated that all the roughness effects can be attributed entirely to the geometry-induced fluctuations. As the roughness size increases further, the turbulent component is also modified, and the fluid-surface interaction becomes more complex.
dc.description.sponsorshipThis work was supported by the European Research Council through the II Multiflow Summer Workshop, and by the British Engineering and Physical Sciences Research Council through grant number EP/M506485/1.
dc.language.isoen
dc.publisherIOP Publishing
dc.titleGeometry-induced fluctuations in the transitionally rough regime
dc.typeConference Object
dc.provenanceOA-6809
prism.issueIdentifierConference 1
prism.publicationDate2016
prism.publicationNameJournal of Physics: Conference Series
prism.volume708
dc.rioxxterms.funderEPSRC
dc.rioxxterms.projectidEP/M506485/1
dcterms.dateAccepted2016-01-19
rioxxterms.versionofrecord10.1088/1742-6596/708/1/012009
rioxxterms.licenseref.urihttp://creativecommons.org/licenses/by/4.0/
rioxxterms.licenseref.startdate2016-04-29
dc.identifier.eissn1742-6596
rioxxterms.typeConference Paper/Proceeding/Abstract
cam.issuedOnline2016-04-29
pubs.conference-name2nd Multiflow Summer School on Turbulence
cam.orpheus.successThu Nov 05 11:57:14 GMT 2020 - The item has an open VoR version.
rioxxterms.freetoread.startdate2099-01-01


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