Cronos Code

Brief overview of the Cronos MHD code

Alfven wing test

Here, the speed of the fluid is shown (color-coded) together with the magnetic field direction (white lines).

Cronos is optimised for

General hyperbolic equations
Compressible hydrodynamics
Compressible MHD
Special relativistic hydrodynamics

Some features of Cronos

Highly modular code structure
Conservative, shock capturing scheme
Second order accuracy
Constrained transport MHD
MPI parallel
Different Riemann solvers
Different grid geometries

Code verification

Cronos was verified by several standard tests.
Corresponding reference files can be downloaded, here: Cronos Reference File
Same for case of ap cluster: Cronos Reference File
See also in UnitTests directory of the code.

Obtaining the code

A downloadable version can be found here
For more information contact: ralf.kissmann(at)uibk.ac.at

Some technical references

Kissmann, R., Kleimann, J., Krebl, B. & Wiengarten, T., The CRONOS Code for Astrophysical Magnetohydrodynamics ApJS 236, 53 (2018)

Flaig, M., Ruoff, P., Kley, W. & Kissmann, R., Global structure of magnetorotationally turbulent protoplanetary discs, MNRAS, 420, 2419-2428, (2012)

Kissmann, R., Pomoell, J. & Kley, W., A central conservative scheme for general rectangular grids, J. Comp. Phys., 228, 2119-2131, (2009)

Some application references

Reitberger, K., Kissmann, R., Reimer, O. & Reimer, A., 3D magneto-hydrodynamic models of non-thermal photon emission in the binary system γ² Velorum ApJ 847, 40, (2017)

Kissmann, R., Reitberger, K., Reimer, O. Reimer, A & Grimaldo, E., Colliding-wind Binaries with Strong Magnetic Fields ApJ 831, 121, (2016)

Reitberger, K., Kissmann, R., Reimer, A, & Reimer, O., Simulating Three-dimensional Nonthermal High-energy Photon Emission in Colliding-wind Binaries, ApJ, 789, 87, (2014)

Wiengarten, T., Kleimann, J., Fichtner, H., Kühl, P., Kopp, A., Heber, B. & Kissmann, R. Cosmic Ray Transport in Heliospheric Magnetic Structures. I. Modeling Background Solar Wind Using the CRONOS Magnetohydrodynamic Code, ApJ, 788, 80, (2014)

Flaig, M., Ruoff, P., Kley, W. & Kissmann, R., Global structure of magnetorotationally turbulent protoplanetary discs, MNRAS, 420, 2419-2428, (2012)

Kissmann, R. Kleimann, J. Fichtner, H. & Grauer, R., Local turbulence simulations for the multiphase ISM, MNRAS, 391, 1577-, (2008)