Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Resistive jet simulations extending radially self-similar
  magnetohydrodynamic models   Numerical simulations with self-similar initial and boundary conditions
provide a link between theoretical and numerical investigations of jet
dynamics. We perform axisymmetric resistive magnetohydrodynamic (MHD)
simulations for a generalised solution of the Blandford & Payne type, and
compare them with the corresponding analytical and numerical ideal-MHD
solutions. We disentangle the effects of the numerical and physical
diffusivity. The latter could occur in outflows above an accretion disk, being
transferred from the underlying disk into the disk corona by MHD turbulence
(anomalous turbulent diffusivity), or as a result of ambipolar diffusion in
partially ionized flows. We conclude that while the classical magnetic Reynolds
number $R_{\rm m}$ measures the importance of resistive effects in the
induction equation, a new introduced number, $\rbeta=(\beta/2)R_{\rm m}$ with
$\beta$ the plasma beta, measures the importance of the resistive effects in
the energy equation. Thus, in magnetised jets with $\beta<2$, when $\rbeta \la
1$ resistive effects are non-negligible and affect mostly the energy equation.
The presented simulations indeed show that for a range of magnetic
diffusivities corresponding to $\rbeta \ga 1$ the flow remains close to the
ideal-MHD self-similar solution.

9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat