By using a Navier-Stokes isotropic turbulent field numerically simulated in the box with a discretization of 1024^3 [Biferale et al. (2005)], we show that the probability of having a stretching-tilting larger than twice the local enstrophy is very small. This probability decreases if we try to filter out the large scales, while it increases filtering out the small scales. This is basically due to the suppression of the compact structures (blobs).
Cumulative distribution of the stretching of vortical structures in isotropic turbulence / L. Sitzia; S. Di Savino; D. Tordella. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - STAMPA. - 318(2011), pp. 062006-1-062006-6. [10.1088/1742-6596/318/6/062006]
Titolo: | Cumulative distribution of the stretching of vortical structures in isotropic turbulence | |
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Data di pubblicazione: | 2011 | |
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Digital Object Identifier (DOI): | http://dx.doi.org/10.1088/1742-6596/318/6/062006 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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http://hdl.handle.net/11583/2447376