This submodule defines an unperturbed magnetised jet model in cylindrical geometry, giving rise to Kelvin-Helmholtz and current-driven instabilities. The geometry is fixed for this problem; the cylinder wall is dependent on the equilibrium parameters and is given by 2rj.
This equilibrium is taken from Baty, H., & Keppens, R. (2002). Interplay between Kelvin-Helmholtz and current-driven instabilities in jets. The Astrophysical Journal, 580(2), 800.
Default values are given by
and can all be changed in the parfile.
The default setup is HEL2 in the original paper. For HEL1 you can set rc = 2.
Sets the equilibrium.