Test cases and publications

Hybrid simulations treat ions kinetically and electrons as a fluid: they describe ion-scale kinetic physics, but not electron kinetic physics. PHARE refines the mesh in user-defined boxes or where the magnetic field varies sharply.

Ion density from a 2D PHARE run: full domain, refined patches, zoom. — Ion density in a 2D PHARE simulation at t = 424.66, in units of the inverse ion cyclotron frequency. Top: full domain. Middle: boundaries of the refined patches in the boxed region. Bottom: density in that region. to validate

Test cases distributed with the code

tests/functional/ in the repository

Case	Model	Dimensions	Description	Directory
Harris current sheets	hybrid	2D, 3D	Two Harris sheets in a periodic box with localized perturbations; automatic refinement on two levels.	harris
Magnetic jump	hybrid	1D	Shocks launched by a large jump in the magnetic field (Riemann-type initial condition).	shock
Alfvén wave	hybrid	1D	Propagation of an Alfvén wave.	alfven_wave
Ion-ion beam instability	hybrid	1D	Instability driven by two ion populations, on three levels; the measured growth rate is compared with the expected 0.09.	ionIonBeam
Noise spectrum	hybrid	1D	Waves grown from particle noise, for dispersion analysis.	dispersion
Orszag-Tang vortex	MHD	2D, 3D	Standard MHD test problem (Orszag and Tang 1979).	mhd_orszagtang
MHD rotor	MHD	2D	Rotating dense disc in a uniform medium.	mhd_rotor
MHD shock tube	MHD	1D	One-dimensional Riemann problem.	mhd_shock

Publications

2024PHARE: Parallel hybrid particle-in-cell code with patch-based adaptive mesh refinement N. Aunai, R. Smets, A. Ciardi, P. Deegan, A. Jeandet, T. Payet, N. Guyot, L. Darrieumerlou · Computer Physics Communications 295, 108966 · open-access version
2021A new method to dispatch split particles in Particle-In-Cell codes R. Smets et al. · Computer Physics Communications 261, 107666 · open-access version

Recorded runs and talks: PHARE on YouTube.