DYNAMO computes the analytic MHD properties of a magnetized plasma from eight physical inputs: magnetic field B₀ mass density ρ₀ temperature T electron density nₑ ion species mᵢ characteristic scale L flow velocity u propagation angle θ All outputs follow analytically from conservation laws, with no simulation and no free parameters. The magnetic diffusivity uses a corrected Coulomb logarithm: eta = etaSpitzer x ln (lambdaD/xi) / ln (lambdaD/bq (T) ), where xi = aB/alpha = 7. 25 nm replaces the classical temperature-dependent de Broglie cutoff. For all physically relevant plasma temperatures, this reduces resistivity relative to Spitzer. Benchmark validation against Wind/ACE solar wind data at 1 AU, standard solar corona reference values, and ITER design parameters confirms 16 of 16 computed quantities within published reference ranges. DYNAMO is freely accessible at arcadialab. fr (no account required, no ads). edit 26/04/2026 - During 24h a draft was published instead of the final paper.
Jessy Pensédent (Sat,) studied this question.