 Global injected power statistics in a turbulent system: degrees of freedom and aspect ratio effectJ.-H. Titon and O. Cadot () The European Physical Journal B: Condensed Matter and Complex Systems, 2005, vol. 45, issue 3, 289-292 Abstract: The properties of the global energy injection rate of a closed turbulent flow produced between two counter-rotating disks are studied. The statistics of this global quantity are measured when the aspect ratio (defined as the ratio of the disk diameter to the separating distance between both disks) is modified. It is shown that the non-Gaussian statistics obtained at a low aspect ratio becomes Gaussian for a large aspect ratio. This effect is accompanied with a large decrease of the fluctuation rate. These results indicate the total energy injection rate to obey the central limit theorem. It is also shown that the number of degrees of freedom of total injection rate may be related to the number of independent large scale structures present in the flow. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2005 Date: 2005 Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:spr:eurphb:v:45:y:2005:i:3:p:289-292 Ordering information: This journal article can be ordered from DOI: 10.1140/epjb/e2005-00196-1 Access Statistics for this article The European Physical Journal B: Condensed Matter and Complex Systems is currently edited by P. Hänggi and Angel Rubio More articles in The European Physical Journal B: Condensed Matter and Complex Systems from Springer, EDP Sciences |
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