Numerical vs. turbulent diffusion in geophysical flow modelling (Articolo in rivista)

Type
Label
  • Numerical vs. turbulent diffusion in geophysical flow modelling (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1393/ncc/i2009-10347-2 (literal)
Alternative label
  • D'Isidoro, A.; Maurizi, A.; Tampieri, F. (2008)
    Numerical vs. turbulent diffusion in geophysical flow modelling
    in Il Nuovo cimento della Società italiana di fisica. C. Geophysics and space physics (Testo stamp.)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • D'Isidoro, A.; Maurizi, A.; Tampieri, F. (literal)
Pagina inizio
  • 813 (literal)
Pagina fine
  • 824 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 31 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 12 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 5-6 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Consiglio Nazionale delle Ricerche (CNR) (literal)
Titolo
  • Numerical vs. turbulent diffusion in geophysical flow modelling (literal)
Abstract
  • Numerical advection schemes induce the spreading of passive tracers from localized sources. The effects of changing resolution and Courant number are investigated using the WAF advection scheme, which leads to a sub-diffusive process. The spreading rate from an instantaneous source is compared with the physical diffusion necessary to simulate unresolved turbulent motions. The time at which the physical diffusion process overpowers the numerical spreading is estimated, and is shown to reduce as the resolution increases, and to increase as the wind velocity increases. (literal)
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