Skip to content. | Skip to navigation

Personal tools

You are here: Home / Publications / Peer-reviewed papers / lmd_LEGACY1983_abstracts.html


1983 .

(1 publication)

C. Basdevant and R. Sadourny. Modelling subgrid scales in numerical simulation of two-dimensional turbulent flows. Journal de Mecanique Theorique et Appliquee Supplement, pages 243-269, 1983. [ bib | ADS link ]

Direct numerical simulation of turbulent, two-dimensional flows requires a mesh size on the order of the dissipation scale, provided that the Re is small enough. On the macroscale, where the turbulent structures are considered to be independent of the deterministic behavior of dissipative microstructures, low resolution models can be used if the statistical properties of subgrid scale forces are incorporated into the mesh. It is shown that a two-dimensional turbulence model with a cut-off wavenumber in the enstrophy cascading range, the subgrid scale model involves only a formulation of the cascade process. Nonlinear diffusion operators, based on heuristic principles, are used in the classical approach, while the intermittency that is present in two-dimensional turbulence requires consideration of spectral slopes significantly steeper than classical theory employs. Consequently, two different techniques for defining a phenomenological model expressing the subgrid scale processes are described.

Contact information

EMC3 group

Case 99
Tour 45-55, 3ème étage
4 Place Jussieu
75252 Paris Cedex 05
Tel: 33 + 1 44 27 27 99
      33 + 6 16 27 34 18 (Dr F. Cheruy)
Tel: 33 + 1 44 27 35 25 (Secretary)
Fax: 33 + 1 44 27 62 72
email: emc3 at

Map of our location

Real time LMDZ simulations

Today's LMDZ meteogram for the SIRTA site

Intranet EMC3

Intranet EMC3