An electrostatic 2D 10-moment multi-fluid model for partially magnetized plasmas

The 10-moment model is a fluid moment model that directly evolves a full anisotropic pressure tensor, relaxing the assumption of isotropic local collisional equilibrium that is made by most conventional (5-moment) fluid models. These additional degrees of freedom allow for the capturing of finite kinetic effects that are not present in other fluid models, e.g., truncation of the VDF near walls, shear waves and a generalized diamagnetic drift. Especially in the presence of magnetic field, anisotropic transport and rotation in velocity space can lead to deviation from local equilibrium (Maxwellian velocity distribution function), when collisional timescales are comparable to the dynamical timescales. In this study, we apply our electrostatic multi-fluid 10-model model to study how anisotropy can affect the transport and instability growth in partially magnetized cross-field plasmas.