https://doi.org/10.1140/epjd/s10053-021-00305-2
Regular Article – Plasma Physics
An extended hydrodynamics model for inertial confinement fusion hohlraums
1
CEA DAM DIF, 91297, Arpajon Cedex, France
2
Université Paris-Saclay, CEA, LMCE, 91680, Bruyères-le-Châtel, France
Received:
28
August
2021
Accepted:
3
November
2021
Published online:
27
November
2021
In some inertial confinement fusion hohlraum designs, the inside plasma is not sufficiently collisional to be satisfactorily described by the Euler equations implemented in hydrodynamic simulation codes, particularly in converging regions of the expanding plasma flow. To better treat that situation, this paper presents an extended hydrodynamics model including higher moments of the particle velocity distribution function, together with physically justified closure assumptions and relaxation terms. A preliminary one-dimensional numerical implementation of the model is shown to give satisfactory results in a test case involving a high-velocity collision of two plasma flows. Paths to extend that model to three dimensions as needed for an actual hohlraum geometry are briefly discussed.
Supplementary Information The online version contains supplementary material available at https://doi.org/10.1140/epjd/s10053-021-00305-2.
© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2021
