A Variable Mesh Spacing for Large-Eddy Simulation Models in the Convective Boundary Layer (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• A Variable Mesh Spacing for Large-Eddy Simulation Models in the Convective Boundary Layer (Articolo in rivista) (literal)

Anno

• 2009-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1007/s10546-009-9360-z (literal)

Alternative label

• Degrazia GA; Rizza U; Puhales FS; Goulart AG; Carvalho J; Welter GS (2009)
  A Variable Mesh Spacing for Large-Eddy Simulation Models in the Convective Boundary Layer
  in Boundary - layer meteorology
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Degrazia GA; Rizza U; Puhales FS; Goulart AG; Carvalho J; Welter GS (literal)

Pagina inizio

• 277 (literal)

Pagina fine

• 292 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 131 (literal)

Rivista

• Boundary - layer meteorology (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 2 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Rizza, U: ISAC/CNR Degrazia, GA; Puhales, FS; Goulart, AG; Carvalho, J; Welter, GS: UFSM (literal)

Titolo

• A Variable Mesh Spacing for Large-Eddy Simulation Models in the Convective Boundary Layer (literal)

Abstract

• A variable vertical mesh spacing for large-eddy simulation (LES) models in a convective boundary layer (CBL) is proposed. The argument is based on the fact that in the vertical direction the turbulence near the surface in a CBL is inhomogeneous and therefore the subfilter-scale effects depend on the relative location between the spectral peak of the vertical velocity and the filter cut-off wavelength. From the physical point of view, this lack of homogeneity makes the vertical mesh spacing the principal length scale and, as a conse- quence, the LES filter cut-off wavenumber is expressed in terms of this characteristic length scale. Assuming that the inertial subrange initial frequency is equal to the LES filter cut-off frequency and employing fitting expressions that describe the observed convective turbulent energy one-dimensional spectra, it is feasible to derive a relation to calculate the variable vertical mesh spacing. The incorporation of this variable vertical grid within a LES model shows that both the mean quantities (and their gradients) and the turbulent statistics quantities are well described near to the ground level, where the LES predictions are known to be a challenging task. (literal)

Prodotto di

• Meteorologia dinamica (TA.P06.017.003) (Modulo)
• Processi di scambio e strato limite atmosferico (TA.P06.017.002) (Modulo)
• Institute of atmospheric sciences and climate (ISAC) (Istituto)

Autore CNR

• UMBERTO RIZZA (Unità di personale interno)

Insieme di parole chiave

• Keywords of "A Variable Mesh Spacing for Large-Eddy Simulation Models in the Convective Boundary Layer" (Insieme di parole chiave)

Incoming links:

Prodotto

• Institute of atmospheric sciences and climate (ISAC) (Istituto)
• Processi di scambio e strato limite atmosferico (TA.P06.017.002) (Modulo)
• Meteorologia dinamica (TA.P06.017.003) (Modulo)

Autore CNR di

• UMBERTO RIZZA (Unità di personale interno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Boundary - layer meteorology (Rivista)

Insieme di parole chiave di

• Keywords of "A Variable Mesh Spacing for Large-Eddy Simulation Models in the Convective Boundary Layer" (Insieme di parole chiave)