Diagnosing numerical Cherenkov instabilities in relativistic plasma simulations based on general meshes

•Study of spurious Cherenkov radiation in particle-in-cell (PIC) simulations.•A generalized grid-dispersion analysis accounts for different mesh element shapes.•Key behavior differences across mesh types and mesh layouts are examined.•Results help in assessing PIC simulations of kinetic plasmas. Num...

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Veröffentlicht in:	Journal of computational physics 2020-02, Vol.402, p.108880, Article 108880
Hauptverfasser:	Na, D.-Y., Nicolini, J.L., Lee, R., Borges, B.-H.V., Omelchenko, Y.A., Teixeira, F.L.
Format:	Artikel
Sprache:	eng
Schlagworte:	Algorithms Aliasing Computational physics Computer simulation Coupling Finite difference method Finite element method Numerical Cherenkov radiation Particle beams Particle in cell technique Particle-in-cell Plasma Plasmas Relativism Relativistic effects Relativistic plasmas Simulation
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