Mean flow and spiral defect chaos in Rayleigh-Benard convection

dc.contributor.authorChiam, K. H.en
dc.contributor.authorPaul, Mark R.en
dc.contributor.authorCross, M. C.en
dc.contributor.authorGreenside, H. S.en
dc.date.accessioned2024-10-09T13:55:16Zen
dc.date.available2024-10-09T13:55:16Zen
dc.date.issued2003-05-14en
dc.description.abstractWe describe a numerical procedure to construct a modified velocity field that does not have any mean flow. Using this procedure, we present two results. First, we show that, in the absence of the mean flow, spiral defect chaos collapses to a stationary pattern comprising textures of stripes with angular bends. The quenched patterns are characterized by mean wave numbers that approach those uniquely selected by focus-type singularities, which, in the absence of the mean flow, lie at the zigzag instability boundary. The quenched patterns also have larger correlation lengths and are comprised of rolls with less curvature. Secondly, we describe how the mean flow can contribute to the commonly observed phenomenon of rolls terminating perpendicularly into lateral walls. We show that, in the absence of the mean flow, rolls begin to terminate into lateral walls at an oblique angle. This obliqueness increases with the Rayleigh number.en
dc.description.versionPublished versionen
dc.format.extent13 page(s)en
dc.format.mimetypeapplication/pdfen
dc.identifierARTN 056206 (Article number)en
dc.identifier.doihttps://doi.org/10.1103/PhysRevE.67.056206en
dc.identifier.eissn1550-2376en
dc.identifier.issn1539-3755en
dc.identifier.issue5en
dc.identifier.orcidPaul, Mark [0000-0002-0701-1955]en
dc.identifier.pmid12786249en
dc.identifier.urihttps://hdl.handle.net/10919/121311en
dc.identifier.volume67en
dc.language.isoenen
dc.publisherAmerican Physical Societyen
dc.relation.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000183482400040&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=930d57c9ac61a043676db62af60056c1en
dc.relation.urihttp://dx.doi.org/10.1103/physreve.67.056206en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.titleMean flow and spiral defect chaos in Rayleigh-Benard convectionen
dc.title.serialPhysical Review Een
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.otherArticleen
dc.type.otherJournalen
pubs.organisational-groupVirginia Techen
pubs.organisational-groupVirginia Tech/Engineeringen
pubs.organisational-groupVirginia Tech/Engineering/Mechanical Engineeringen
pubs.organisational-groupVirginia Tech/All T&R Facultyen
pubs.organisational-groupVirginia Tech/Engineering/COE T&R Facultyen

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