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| Titel |
Particle dispersion processes in two-dimensional turbulence: a comparison with 2-D kinematic simulation. |
| VerfasserIn |
R. Castilla, J. M. Redondo, P. J. Gámez-Montero, A. Babiano |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 14, no. 2 ; Nr. 14, no. 2 (2007-03-28), S.139-151 |
| Datensatznummer |
250012159
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| Publikation (Nr.) |
 copernicus.org/npg-14-139-2007.pdf |
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| Zusammenfassung |
| We study numerically the comparison between Lagrangian experiments
on turbulent particle
dispersion in 2-D turbulent flows performed, on the one hand, on the basis of direct numerical
simulations (DNS) and, on the other
hand, using kinematic simulations (KS). Eulerian space-time structure
of both DNS and KS dynamics are not
comparable, mostly due to the absence of strong coherent vortices and
advection processes in the KS fields. The comparison allows to
refine past studies about the contribution of non-homogeneous space-time
2-D Eulerian structure on the turbulent absolute and relative particle
dispersion processes. We particularly focus our discussion
on the Richardson's regime for relative dispersion. |
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