Turbulence closure models and their application in RAMS (Articolo in rivista)

Type
Label
  • Turbulence closure models and their application in RAMS (Articolo in rivista) (literal)
Anno
  • 2005-01-01T00:00:00+01:00 (literal)
Alternative label
  • S. Trini Castelli; Ferrero E; Anfossi D; Ohba R (2005)
    Turbulence closure models and their application in RAMS
    in Environmental fluid mechanics (2001)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • S. Trini Castelli; Ferrero E; Anfossi D; Ohba R (literal)
Pagina inizio
  • 169 (literal)
Pagina fine
  • 192 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 5 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Institute of Atmospheric Sciences and Climate, National Research Council, Torino, Italy; Department of Sciences and Advanced Technologies, University of Piemonte Orientale, Alessandria, Italy; Fluid Dynamic Laboratory, Mitsubishi Heavy Industries, Nagasaki, Japan (literal)
Titolo
  • Turbulence closure models and their application in RAMS (literal)
Abstract
  • Turbulence closures are fundamental for modelling the atmospheric diffusion in numerical codes and the resulting eddy diffusivities are key parameters in describing the transport and dispersion in the boundary layer. In this work, four turbulence closure schemes have been applied for reproducing a neutral flow over schematic complex terrain using the meteorological model RAMS. Two of the closures, a one-equation (E-l) and a two-equations (E-e) model, have been implemented in RAMS in alternative to the ones originally available. In these cases, an analytical method based on the similarity theory for the atmospheric surface layer and boundary layer is adopted to calculate the empirical constants of the turbulence closures. Some example of numerical studies performed to simulate the flow and turbulence over a 3-D hill in wind-tunnel experiment in neutral stratifications are presented and discussed. An intercomparison of simulations related to different closures is considered by analysing the main features of the flow over the hill and by comparing the calculated vertical profiles of turbulent kinetic energy with measured ones (literal)
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