Fourier signature of filamentary vorticity structures in two-dimensional turbulence

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Show simple item record Reynolds Barredo, José Miguel Newman, D.E. Terry, P. W. Sánchez Fernández, Luis Raúl 2022-09-21T08:33:19Z 2022-09-21T08:33:19Z 2016-08
dc.identifier.bibliographicCitation Reynolds-Barredo, J. M., Newman, D. E., Terry, P. W., & Sanchez, R. (2016). Fourier signature of filamentary vorticity structures in two-dimensional turbulence. In EPL (Europhysics Letters), 115(3), 34002-34008
dc.identifier.issn 0295-5075
dc.description.abstract It is shown that coherent regions of isotropic two-dimensional (2D) turbulence can be clearly identified in the phase part of the Fourier spectrum. Certain spectral phase events are particularly prominent, and are much stronger in the range of wave numbers corresponding to the dissipation range. It is shown that these events are associated with spatially localized filamentary structures in the 2D vorticity field that historically have been related to the intermittency of dissipation. The identified phase signature provides a particularly transparent diagnostic of the temporal evolution of the coherent coupling of disparate scales in anisostropic intermittent dissipative events. These results open the possibility of using the phase of the Fourier transform as a new turbulence diagnostic that identifies and quantitatively characterizes details pertaining to dissipative events.
dc.description.sponsorship Research supported in part by the Spanish national projects No. ENE2009-12213-C03-03, ENE2012-33219, UNC313-4E-2361 and ENE2012-31753 and the US DOE Office of Science Grants No. DE-FG02-04ER54741 and DE-FG02-89ER53291. Simulations run at the Uranus supercomputer cluster at Universidad Carlos III de Madrid.
dc.format.extent 6
dc.language.iso eng
dc.publisher IOP Publishing
dc.rights © EPLA, 2016
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.subject.other Dynamics
dc.title Fourier signature of filamentary vorticity structures in two-dimensional turbulence
dc.type article
dc.subject.eciencia Física
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. ENE2009-12213-C03-03
dc.relation.projectID Gobierno de España. ENE2012-33219
dc.relation.projectID Gobierno de España. ENE2012-31753
dc.relation.projectID Indefinido. UNC313-4E-2361
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 34002
dc.identifier.publicationissue 3
dc.identifier.publicationlastpage 34008
dc.identifier.publicationtitle EPL
dc.identifier.publicationvolume 115
dc.identifier.uxxi AR/0000018298
dc.contributor.funder Ministerio de Economía y Competitividad (España)
dc.affiliation.dpto UC3M. Departamento de Física
dc.affiliation.grupoinv UC3M. Grupo de Investigación: Física de Plasmas
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