Afficher la notice abrégée

Lagrangian diffusion properties of a free shear turbulent jet

hal.structure.identifierPortland State University [Portland] [PSU]
dc.contributor.authorVIGGIANO, Bianca
hal.structure.identifierLaboratoire de Physique de l'ENS Lyon [Phys-ENS]
dc.contributor.authorBASSET, Thomas
hal.structure.identifierWashington State University [WSU]
dc.contributor.authorSOLOVITZ, Stephen
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorBAROIS, Thomas
hal.structure.identifierHélium : du fondamental aux applications [NEEL - HELFA]
dc.contributor.authorGIBERT, Mathieu
hal.structure.identifierLaboratoire des Écoulements Géophysiques et Industriels [Grenoble] [LEGI]
dc.contributor.authorMORDANT, Nicolas
hal.structure.identifierLaboratoire de Physique de l'ENS Lyon [Phys-ENS]
dc.contributor.authorCHEVILLARD, Laurent
hal.structure.identifierLaboratoire de Physique de l'ENS Lyon [Phys-ENS]
dc.contributor.authorVOLK, Romain
hal.structure.identifierLaboratoire de Physique de l'ENS Lyon [Phys-ENS]
dc.contributor.authorBOURGOIN, Mickaël
hal.structure.identifierPortland State University [Portland] [PSU]
dc.contributor.authorCAL, Raúl Bayoán
dc.date.issued2021
dc.identifier.issn0022-1120
dc.description.abstractEnA Lagrangian experimental study of an axisymmetric turbulent water jet is performed to investigate the highly anisotropic and inhomogeneous flow field. Measurements are conducted within a Lagrangian exploration module, an icosahedron apparatus, to facilitate optical access of three cameras. Stereoscopic particle tracking velocimetry results in three-component tracks of position, velocity and acceleration of the tracer particles within the vertically oriented jet with a Taylor-based Reynolds number Reλ≃230. Analysis is performed at seven locations from 15 diameters up to 45 diameters downstream. Eulerian analysis is first carried out to obtain critical parameters of the jet and relevant scales, namely the Kolmogorov and large (integral) scales as well as the energy dissipation rate. Lagrangian statistical analysis is then performed on velocity components stationarised following methods inspired by Batchelor (J. Fluid Mech., vol. 3, 1957, pp. 67–80), which aim to extend stationary Lagrangian theory of turbulent diffusion by Taylor to the case of self-similar flows. The evolution of typical Lagrangian scaling parameters as a function of the developing jet is explored and results show validation of the proposed stationarisation. The universal scaling constant C0 (for the Lagrangian second-order structure function), as well as Eulerian and Lagrangian integral time scales, are discussed in this context. Constant C0 is found to converge to a constant value (of the order of C0=3) within 30 diameters downstream of the nozzle. Finally, the occurrence of finite particle size effects is investigated through consideration of acceleration-dependent quantities
dc.description.sponsorshipIDEXLYON - ANR-16-IDEX-0005
dc.language.isoen
dc.publisherCambridge University Press (CUP)
dc.subject.enjets
dc.subject.enmixing and dispersion
dc.subject.enfree shear layers
dc.title.enLagrangian diffusion properties of a free shear turbulent jet
dc.typeArticle de revue
dc.identifier.doi10.1017/jfm.2021.325
dc.subject.halPhysique [physics]/Mécanique [physics]/Mécanique des fluides [physics.class-ph]
bordeaux.journalJournal of Fluid Mechanics
bordeaux.pageA25
bordeaux.volume918
bordeaux.peerReviewedoui
hal.identifierhal-03290080
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03290080v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Fluid%20Mechanics&rft.date=2021&rft.volume=918&rft.spage=A25&rft.epage=A25&rft.eissn=0022-1120&rft.issn=0022-1120&rft.au=VIGGIANO,%20Bianca&BASSET,%20Thomas&SOLOVITZ,%20Stephen&BAROIS,%20Thomas&GIBERT,%20Mathieu&rft.genre=article


Fichier(s) constituant ce document

FichiersTailleFormatVue

Il n'y a pas de fichiers associés à ce document.

Ce document figure dans la(les) collection(s) suivante(s)

Afficher la notice abrégée