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Scaling of Near-Wall Flows in Quasi-Two-Dimensional Turbulent Channels

hal.structure.identifierOkinawa Institute of Science and Technology
dc.contributor.authorSAMANTA, Devranjan
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorINGREMEAU, François
hal.structure.identifierOkinawa Institute of Science and Technology
hal.structure.identifierDepartment of Physics and Astronomy [Pittsburgh]
dc.contributor.authorCERBUS, Rory
hal.structure.identifierDivision of Thermal and Fluids Engineering, NTU
dc.contributor.authorTRAN, Tuan
hal.structure.identifierDepartment of Physics and Astronomy [Pittsburgh]
dc.contributor.authorGOLDBURG, Walter I.
hal.structure.identifierOkinawa Institute of Science and Technology
dc.contributor.authorCHAKRABORTY, Pinaki
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorKELLAY, Hamid
dc.date.created2014-02-13
dc.date.issued2014-07-09
dc.identifier.issn0031-9007
dc.description.abstractEnThe law of the wall and the log law rule the near-wall mean velocity profile of three-dimensional turbulent flows. These well-known laws, which are validated by legions of experiments and simulations, may be universal. Here, using a soap-film channel, we report the first experimental test of these laws in quasi-two-dimensional turbulent channel flows under two disparate turbulent spectra. We find that despite the differences with three-dimensional flows, the laws prevail, albeit with notable distinctions: the two parameters of the log law are markedly distinct from their three-dimensional counterpart; further, one parameter (the von Kármán constant) is independent of the spectrum whereas the other (the offset of the log law) depends on the spectrum. Our results suggest that the classical theory of scaling in wall-bounded turbulence is incomplete wherein a key missing element is the link with the turbulent spectrum.
dc.language.isoen
dc.publisherAmerican Physical Society
dc.rights.urihttp://creativecommons.org/licenses/by-nc/
dc.subject.en(47.27.nd) Channel flow
dc.title.enScaling of Near-Wall Flows in Quasi-Two-Dimensional Turbulent Channels
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevLett.113.024504
dc.subject.halPhysique [physics]/Physique [physics]/Optique [physics.optics]
bordeaux.journalPhysical Review Letters
bordeaux.page024504 (1-5)
bordeaux.volume113
bordeaux.issue2
bordeaux.peerReviewedoui
hal.identifierhal-01064019
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01064019v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Physical%20Review%20Letters&rft.date=2014-07-09&rft.volume=113&rft.issue=2&rft.spage=024504%20(1-5)&rft.epage=024504%20(1-5)&rft.eissn=0031-9007&rft.issn=0031-9007&rft.au=SAMANTA,%20Devranjan&INGREMEAU,%20Fran%C3%A7ois&CERBUS,%20Rory&TRAN,%20Tuan&GOLDBURG,%20Walter%20I.&rft.genre=article


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