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An Extended-MHD Model for Handling Low-density Plasmas with Tabular Material Models
Nathaniel D. Hamlin, Matthew R. Martin, Jeffrey M. Woolstrum
https://arxiv.org/abs/2506.06625

An Extended-MHD Model for Handling Low-density Plasmas with Tabular Material Models
An extended-MHD model, interfaced with tabular equation-of-state and conductivity models, has been developed in PERSEUS (Physics as an Extended-MHD Relaxation System with an Efficient Upwind Scheme) for simulating a plasma-vacuum interface under experimentally-relevant conditions for a pulsed-power system, and with minimal sensitivity to parameters characterizing the numerical vacuum. For several test problems, we demonstrate convergence of this model for sufficiently low density floors and wit…