A Unified Hyperbolic Model for Coupled Fluid Dynamics and Electromagnetics in Aerospace Applications

摘要

This paper details the development a unified hyperbolic model for fluid dynamics coupled to electromagnetics. The advantage to the model presented is that it includes the accurate physical behavior for several plasmas of aerospace interest; it can effectively capture both magnetohydrodynamic and electrohydrodynamic limits of the plasma, in addition to low-conductivity effects that expose the wave nature of the electromagnetic field. The approach is useful because of its potential for simplifying existing implementations towards multiphysics simulations of aerospace plasmas, eliminating the need for multiple implementations for different plasma models. In previous work, a Riemann solver approach and a flux-splitting approach have been introduced for this model. Here, we review their individual merits, present some assessment simulation results using both approaches, and compare them.