Multiple-scale kinetic simulations with the energy conserving semi-implicit particle in cell method

Lapenta, Giovanni and Gonzalez-Herrero, Diego and Boella, Elisabetta (2017) Multiple-scale kinetic simulations with the energy conserving semi-implicit particle in cell method. Journal of Plasma Physics, 83 (2). ISSN 0022-3778

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Abstract

The recently developed energy conserving semi-implicit method (ECsim) for particle-in-cell (PIC) simulation is applied to multiple-scale problems where the electron-scale physics needs to be only partially retained and the interest is on the macroscopic or ion-scale processes. Unlike hybrid methods, the ECsim is capable of providing kinetic electron information, such as wave–electron interaction (Landau damping or cyclotron resonance) and non-Maxwellian electron velocity distributions. However, like hybrid methods, the ECsim does not need to resolve all electron scales, allowing time steps and grid spacings orders of magnitude larger than in explicit PIC schemes. The additional advantage of the ECsim is that the stability at large scale is obtained while conserving energy exactly. Three examples are presented: ion acoustic waves, electron acoustic instability and reconnection processes.

Item Type:
Journal Article
Journal or Publication Title:
Journal of Plasma Physics
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3104
Subjects:
ID Code:
133313
Deposited By:
Deposited On:
01 May 2019 12:40
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Dec 2020 06:58