NDLI: DSMC modeling of a single hot spot evolution using nonlinear Landau-Fokker-Planck equation

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DSMC modeling of a single hot spot evolution using nonlinear Landau-Fokker-Planck equation

Content Provider	Semantic Scholar
Author	Potapenko, I. F.
Copyright Year	2013
Abstract	A general approach to Monte Carlo methods for Coulomb collisions is proposed [1, 2]. Its key idea is an approximation of Landau-Fokker-Planck equations by Boltzmann equations of quasi-Maxwellian kind. It means that the total collision frequency for the corresponding Boltzmann equation does not depend on the velocities. This allows to make the simulation process very simple since the collision pairs can be chosen arbitrarily, without restriction. This approach includes the well-known methods [3, 4] as particular cases, generalizes the approach [5] and looks more simple. It is derived for the general case of multicomponent plasmas. The splitting procedure over physical parameters is formally quite similar to what we do in simulation of neutral gases by Monte Carlo methods [6]. High-frequency fields are included into consideration and comparison with the well-known results are given. The aim is to test the method and to understand better the physics of thermal conductivity. The electron distribution function displays several non-Maxwellian features which depend on the interplay between the effects of inverse bremsstrahlung heating and nonlocal transport [7]. We study the relaxation of an initial localized temperature enhancement with the following kinetic equation ∂fe ∂t + vx ∂fe ∂x − eE me ∂fe ∂vx = Iee(fe, fe) + Iei(fe, fi),
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.dmi.unict.it/~wascom13/index.php/wascom/wascom13/paper/download/16/11
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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