A time-filtering method for plasma simulation: High bulk conductivity

In this paper we aim to make possible the simulation of plasma -solid interaction in real insulating components using a set of first-principle partial differential equations. The high ratio between the conductivities of the many materials present in electrical components causes the associated numerical problem to become very stiff and this curtails the maxi-mum allowed time step increase. To simulate some realistic components using sufficiently large time steps a filtering method is applied. A novel theoretical analysis has been developed showing that the fil-ter allows the use of larger time steps without affecting the accuracy of the method. This analysis is backed by the results of a significant numerical experiment. (c) 2021 Elsevier Inc. All rights reserved.

Automated summary

This paper aims to simulate plasma-solid interaction in real insulating components using first-principle partial differential equations. A filtering method is applied to allow the use of larger time steps in simulating realistic components. The novel theoretical analysis shows that the filter does not affect the accuracy of the method, as supported by significant numerical experiments.