Turbulent mixing in spherical implosions

We discuss the application of the numerical code TURMOIL to turbulent mixing in a simple spherical implosion, a much simplified version of an inertial confinement fusion implosion. Some form of Monotone integrated large eddy simulation is required to eliminate non‐physical oscillations, as shocks an...

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Bibliographic Details
Published in:International journal for numerical methods in fluids 2008-03, Vol.56 (8), p.1597-1603
Main Authors: Youngs, David L., Williams, Robin J. R.
Format: Article
Language:English
Subjects:
compressible flow
Exact sciences and technology
Fluid dynamics
Fundamental areas of phenomenology (including applications)
large eddy simulation
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
Plasma macroinstabilities (magnetohydrodynamic, e.g., kink, fire-hose, mirror, ballooning, tearing, trapped-particle, flute, rayleigh-taylor, etc.)
Turbulence simulation and modeling
Turbulent flows, convection, and heat transfer
Waves, oscillations, and instabilities in plasmas and intense beams
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Summary:We discuss the application of the numerical code TURMOIL to turbulent mixing in a simple spherical implosion, a much simplified version of an inertial confinement fusion implosion. Some form of Monotone integrated large eddy simulation is required to eliminate non‐physical oscillations, as shocks and contact discontinuities are present. The dissipation in the TURMOIL scheme is analysed. It is argued that this is relatively low and that the ‘sub‐grid’ dissipation can be precisely quantified. © British Crown Copyright 2007/MOD. Reproduced with permission. Published by John Wiley & Sons, Ltd.
ISSN:0271-2091
1097-0363
DOI:10.1002/fld.1594