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ICHMT DIGITAL LIBRARY ONLINE

ISSN 961-91393-0-5

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Year 2006

Volume 1 - Turbulence, Heat and Mass Transfer 5
Proceeding of The International Symposium on Turbulence, Heat and Mass Transfer - Dubrovnik, Croatia, September 25-29, 2006

806 pages

Volume price - $246.00

Large Eddy Simulations of Rayleigh-Taylor Incompressible Turbulence

X. Silvani
Laboratoire des Systemes Physiques de l'Environnement, CNRS UMR 6134, Quartier Grossetti 20250 Corte

J. Magnaudet
Institut de Mecanique des Fluides de Toulouse, CNRS UMR 5514, Avenue Camille Soula, 31 400 Toulouse

ABSTRACT

This paper reports on Large Eddy Simulations (LES) of self-similar Rayleigh-Taylor turbulence in the incompressible limit. We first discuss the governing filtered Navier-Stokes equations and the associated subgrid-scale modeling. We then provide results showing evidence of self-similarity for three different initial density ratios. The quantitative results are found to agree closely with available experimental and theoretical