Numerical approximation of the Euler-Poisson-Boltzmann model in the quasineutral limit

Details Numerical approximation of the Euler-Poisson-Boltzmann model in the quasineutral limit Numerical approximation of the Euler-Poisson-Boltzmann model in the quasineutral limit

2010-10-28

arxiv.org/abs/1010.5967v1

Mathematics

Analysis of PDEs

Scientific paper

This paper analyzes various schemes for the Euler-Poisson-Boltzmann (EPB) model of plasma physics. This model consists of the pressureless gas dynamics equations coupled with the Poisson equation and where the Boltzmann relation relates the potential to the electron density. If the quasi-neutral assumption is made, the Poisson equation is replaced by the constraint of zero local charge and the model reduces to the Isothermal Compressible Euler (ICE) model. We compare a numerical strategy based on the EPB model to a strategy using a reformulation (called REPB formulation). The REPB scheme captures the quasi-neutral limit more accurately.

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