Multi-Ion Hall-MHD Formulation and Highly-Coupled Numerical Implementation into Hybrid Particle-in-Cell Code

• Published in: 2023 IEEE International Conference on Plasma Science (ICOPS) p. 1
• Main Authors: Thoma, C., Clark, R. E., Welch, D. R.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 21-05-2023
• Subjects: Codes; Couplings; Fluids; Ions; Magnetohydrodynamics; Simulation; Sociology
• ISSN: 2576-7208
• DOI: 10.1109/ICOPS45740.2023.10481330

A highly-coupled single-fluid two-temperature magnetohydrodynamic (MHD) algorithm has been outlined in C. Thoma, et al., Comp. Phys. Comm., 261 (2021) 107823. The Hall term is included in a natural way into the highly-coupled formulation. The extension of this algorithm to include an arbitrary number of MHD ion species is described. The algorithm now also allows for the coupling of highly-coupled MHD species with an arbitrary number of auxiliary non-MHD species. The algorithm has been implemented in the particle-in-cell code Chicago. These refinements to the model allow for greater flexibility, as distinct particle populations in a simulation may be represented either as kinetic, fluid, or MHD species. Migrations between kinetic, fluid, and MHD species can also be accommodated based on user-defined criteria. The implementation of the algorithm into Chicago is described, and some preliminary simulation results in 1D and 2D are given.