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Session: Reacting and compressible flows 1
Session starts: Wednesday 26 August, 13:30
Presentation starts: 13:30
Room: Room F

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Nicolas Schneider (CEA, DAM, DIF, 91297 Arpajon, France, EU)
Serge Gauthier (CEA, DAM, DIF, 91297 Arpajon, France, EU)

Abstract:
We study mixing layers generated by Rayleigh-Taylor instability. It develops in various physical situations, such as supernovae explosions and inertial confinement fusion, which aims at obtaining thermonuclear ignition by compressing a pellet filled with deuterium-tritium. The numerical simulations we have carried out start from rest and several physical models are involved: Boussinesq, anelastic, and compressible. This allows for a wide exploration of parameters. Results from DNS spectral simulations with around 900 millions collocation points are presented. Anisotropy, compressibility effects, characteristics of turbulence and mixing, are explored.