en
Scientific article
English

Numerical analysis of the averaged flow field in a turbulent lattice Boltzmann simulation

Published inPhysica A: Statistical Mechanics and Its Applications, vol. 362, no. 1, p. 6-10
Publication date2006
Abstract

A direct numerical simulation of a turbulent flow field with a lattice BGK method is presented. A spatial coarse graining of the numerical results is compared with the expected LBGK dynamics for a flow field on a reduced lattice size. This comparison permits to exhibit subgrid properties of the fluid which are not resolved on the coarse lattice. As expected from existing subgrid models, an effective viscosity can be measured that increases when the lattice is coarse grained. Turbulence models based on an effective viscosity are particularly interesting in a lattice Boltzmann simulation, due to the linearity of the propagation operator.

Keywords
  • Kinetic theory
  • Turbulence modeling
  • Direct numerical simulation
Citation (ISO format)
LATT, Jonas et al. Numerical analysis of the averaged flow field in a turbulent lattice Boltzmann simulation. In: Physica A: Statistical Mechanics and Its Applications, 2006, vol. 362, n° 1, p. 6–10. doi: 10.1016/j.physa.2005.09.016
Main files (1)
Article (Published version)
accessLevelRestricted
Identifiers
ISSN of the journal0378-4371
277views
0downloads

Technical informations

Creation07/05/2019 4:41:00 PM
First validation07/05/2019 4:41:00 PM
Update time03/15/2023 5:44:53 PM
Status update03/15/2023 5:44:52 PM
Last indexation01/17/2024 5:48:34 AM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack