English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

This contribution deals with the modeling of collisional multicomponentmagnetized plasmas in thermal and chemical nonequilibrium aiming at simulatingand predicting magnetic reconnections in the chromosphere of the sun. We focuson the numerical simulation of a simplified fluid model in order to properlyinvestigate the influence on shock solutions of a nonconservative productpresent in the electron energy equation. Then, we derive jump conditions basedon travelling wave solutions and propose an original numerical treatment inorder to avoid non-physical shocks for the solution, that remains valid in thecase of coarse-resolution simulations. A key element for the numerical schemeproposed is the presence of diffusion in the electron variables, consistentwith the physically-sound scaling used in the model developed by Graille et al.following a multiscale Chapman-Enskog expansion method [M3AS, 19 (2009)527--599]. The numerical strategy is eventually assessed in the framework of asolar physics test case. The computational method is able to capture thetravelling wave solutions in both the highly- and coarsely-resolved cases.

Numerical treatment of the nonconservative product in a multiscale fluid model for plasmas in thermal nonequilibrium: application to solar physics