Transition to Turbulence in ICF Capsule Implosions
ORAL
Abstract
We simulate an indirect-drive NIF cryogenic capsule experiment, N170601, requiring multigroup radiation diffusion to transport x-ray energy from the cylindrical Hohlraum to the target capsule. The 3D simulation model involves miscible material interfaces and 3T plasma physics treatments. We use relatively coarse 2D runs through onset of turbulence, followed
by mapping to highly resolved 3D mesh with suitable 3D seed-perturbations. Challenges coupling 3D hydrodynamics and multiphysics are discussed in this context. Elaboration of
the results presented includes analysis of the vorticity production budget and transition signatures, evolution of quantities of interest and their uncertainty analysis, and comparisons
with NIF data.
by mapping to highly resolved 3D mesh with suitable 3D seed-perturbations. Challenges coupling 3D hydrodynamics and multiphysics are discussed in this context. Elaboration of
the results presented includes analysis of the vorticity production budget and transition signatures, evolution of quantities of interest and their uncertainty analysis, and comparisons
with NIF data.
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Presenters
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Fernando F Grinstein
Los Alamos Natl Lab
Authors
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Fernando F Grinstein
Los Alamos Natl Lab
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Vincent P Chiravalle
Los Alamos Natl Lab, Los Alamos National Laboratory
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Brian Michael Haines
Los Alamos National Laboratory
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Robert Greene
Los Alanos Natl Lab
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Filipe Pereira
Los Alamos National Laboratory