Numerical Modeling of Nonlocal Energy Transport in Laser-Heated Plasmas
Numerické modelování nelokálního transport energie v laserovém plasmatu
Typ dokumentu
disertační práceAutor
Holec, Milan
Vedoucí práce
Liska, Richard
Weber, Stefan
Studijní obor
Informatická fyzika a technikaStudijní program
Aplikace přírodních vědInstituce přidělující hodnost
České vysoké učení technické v Praze. Fakulta jaderná a fyzikálně inženýrská. Katedra fyzikální elektronikyMetadata
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Modeling of the nonlocal energy transport in laser-heated plasmas is a challenging task.
In order to include such a transport into simulations of plasmas, we propose the nonlocal
transport hydrodynamic model, which provides a kinetic model and the classical
fluid description at the same time. It resides in direct solution of electron and
photon transport equations based on the BGK collision operator which gives an inherent
coupling of energy transport to the plasma fluid. Our high-order discontinuous
Galerkin scheme of the BGK transport equations and the fluid energy equations gives
solutions obeying any regime of transport, i.e. between the local diffusion asymptotic
and the collisionless transport asymptotic of free-streaming particles, which is demonstrated
in the case of exact steady transport and approximate multi-group diffusion
numerical tests. As an application of the nonlocal transport hydrodynamic model, we
present simulation results of the ultra-intense laser prepulse interaction with solid targets
of different atomic numbers, and results of the laser-driven shock in a plastic foam
which is related to study of warm-dense-matter state of carbon. The simulations are
calculated using our new Plasma Euler and Transport Equations nonlocal transport
hydrodynamic code PETE.
Kolekce
- Disertační práce - 14000 [238]
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