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Comportement asymptotique du coefficient de friction dans les écoulements turbulents bi-dimensionnels

hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorVILQUIN, Alexandre
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorJAGIELKA, Julie
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorDJAMBOV, Simeon
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorHEROUARD, Hugo
hal.structure.identifierInstitut de Mathématiques de Bordeaux [IMB]
dc.contributor.authorFISCHER, Patrick
hal.structure.identifierInstitut de Mathématiques de Bordeaux [IMB]
dc.contributor.authorBRUNEAU, Charles-Henri
hal.structure.identifierFluid Mechanics Unit
dc.contributor.authorCHAKRABORTY, Pinaki
hal.structure.identifierContinuum Physics Unit
dc.contributor.authorGIOIA, Gustavo
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorKELLAY, Hamid
dc.date.created2020-05-04
dc.date.issued2021-01-27
dc.identifier.issn2375-2548
dc.description.abstractEnThe friction f is the property of wall-bounded flows that sets the pumping cost of a pipeline, the draining capacity of a river, and other variables of practical relevance. For highly turbulent rough-walled pipe flows, f depends solely on the roughness length scale r, and the f − r relation may be expressed by the Strickler empirical scaling f ∝ r1/3. Here, we show experimentally that for soap film flows that are the two-dimensional (2D) equivalent of highly turbulent rough-walled pipe flows, f ∝ r and the f − r relation is not the same in 2D as in 3D. Our findings are beyond the purview of the standard theory of friction but consistent with a competing theory in which f is linked to the turbulent spectrum via the spectral exponent α: In 3D, α = 5/3 and the theory yields f ∝ r1/3; in 2D, α = 3 and the theory yields f ∝ r.
dc.language.isoen
dc.publisherAmerican Association for the Advancement of Science (AAAS)
dc.rights.urihttp://creativecommons.org/licenses/by-nc/
dc.subject.enTurbulent flows
dc.subject.enFriction
dc.subject.enrough walls
dc.titleComportement asymptotique du coefficient de friction dans les écoulements turbulents bi-dimensionnels
dc.title.enAsymptotic turbulent friction in 2D rough-walled flows
dc.typeArticle de revue
dc.identifier.doi10.1126/sciadv.abc6234
dc.subject.halPhysique [physics]/Mécanique [physics]/Mécanique des fluides [physics.class-ph]
bordeaux.journalScience Advances
bordeaux.volume7
bordeaux.issue5
bordeaux.peerReviewedoui
hal.identifierhal-03125925
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03125925v1
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