High resolution numerical study of Rayleigh-Taylor turbulence using a thermal lattice Boltzmann scheme (Articolo in rivista)

Type

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

Label

• High resolution numerical study of Rayleigh-Taylor turbulence using a thermal lattice Boltzmann scheme (Articolo in rivista) (literal)

Anno

• 2010-01-01T00:00:00+01:00 (literal)

Alternative label

• Biferale L., Mantovani F., Sbragaglia M., Scagliarini, A., Toschi, F., Tripiccione, R. (2010)
  High resolution numerical study of Rayleigh-Taylor turbulence using a thermal lattice Boltzmann scheme
  in Physics of fluids (1994)
  (literal)

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

• Biferale L., Mantovani F., Sbragaglia M., Scagliarini, A., Toschi, F., Tripiccione, R. (literal)

Pagina inizio

• 115112 (literal)

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

• 22 (literal)

Rivista

• Physics of fluids (Rivista)

Note

• ISI Web of Science (WOS) (literal)

Titolo

• High resolution numerical study of Rayleigh-Taylor turbulence using a thermal lattice Boltzmann scheme (literal)

Abstract

• We present the results of a high resolution numerical study of two-dimensional (2D) Rayleigh-Taylor turbulence using a recently proposed thermal lattice Boltzmann method The goal of our study is both methodological and physical We assess merits and limitations concerning small- and large-scale resolution/accuracy of the adopted integration scheme We discuss quantitatively the requirements needed to keep the method stable and precise enough to simulate stratified and unstratified flows driven by thermal active fluctuations at high Rayleigh and high Reynolds numbers We present data with spatial resolution up to 4096 x 10 000 grid points and Rayleigh number up to Ra similar to 10(11) The statistical quality of the data allows us to investigate velocity and temperature fluctuations, scale-by-scale, over roughly four decades We present a detailed quantitative analysis of scaling laws in the viscous, inertial, and integral range, supporting the existence of a Bolgiano-like inertial scaling, as expected in 2D systems We also discuss the presence of small/large intermittent deviations to the scaling of velocity/temperature fluctuations and the Rayleigh dependency of gradients flatness. (literal)

Prodotto di

• Istituto per le applicazioni del calcolo \"Mauro Picone\" (IAC) (Istituto)
• Dinamica dei sistemi complessi fluidodinamici e biologici (MD.P02.002.001) (Modulo)

Autore CNR

• FEDERICO TOSCHI (Unità di personale interno)

Incoming links:

Prodotto

• Istituto per le applicazioni del calcolo \"Mauro Picone\" (IAC) (Istituto)
• Dinamica dei sistemi complessi fluidodinamici e biologici (MD.P02.002.001) (Modulo)

Autore CNR di

• FEDERICO TOSCHI (Unità di personale interno)

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

• Physics of fluids (Rivista)