Numerical analysis of anisotropic diffusion effect on ICF hydrodynamic instabilities
1 CELIA, UMR5107 Universit Bordeaux I – CNRS – CEA, Universit Bordeaux I, 33405 Talence, France
2 CEA, DAM, DIF, 91297 Arpajon, France
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Published online: 15 November 2013
The effect of anisotropic diffusion on hydrodynamic instabilities in the context of Inertial Confinement Fusion (ICF) flows is numerically assessed. This anisotropy occurs in indirect-drive when laminated ablators are used to modify the lateral transport [1,2]. In direct-drive, non-local transport mechanisms and magnetic fields may modify the lateral conduction . In this work, numerical simulations obtained with the code PERLE , dedicated to linear stability analysis, are compared with previous theoretical results . In these approaches, the diffusion anisotropy can be controlled by a characteristic coefficient which enables a comprehensive study. This work provides new results on the ablative Rayleigh-Taylor (RT), ablative Richtmyer-Meshkov (RM) and Darrieus-Landau (DL) instabilities.
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