PIERNIK mhd code - a multi-fluid, non-ideal extension of the relaxing-TVD scheme (IV)

Details PIERNIK mhd code - a multi-fluid, non-ideal extension of the relaxing-TVD scheme (IV) PIERNIK mhd code - a multi-fluid, non-ideal extension of the relaxing-TVD scheme (IV)

2009-01-02

arxiv.org/abs/0901.0104v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

4 pages, 1 figure, proceedings of The Role of Disk-Halo Interaction in Galaxy Evolution: Outflow vs Infall, 2008, Espinho

Scientific paper

We present a new multi-fluid, grid MHD code PIERNIK, which is based on the Relaxing TVD scheme (Jin & Xin, 1995). The original scheme (see Trac & Pen (2003) and Pen et al. (2003)) has been extended by an addition of dynamically independent, but interacting fluids: dust and a diffusive cosmic ray gas, described within the fluid approximation, with an option to add other fluids in an easy way. The code has been equipped with shearing-box boundary conditions, and a selfgravity module, Ohmic resistivity module, as well as other facilities which are useful in astrophysical fluid-dynamical simulations. The code is parallelized by means of the MPI library. In this paper we present an extension of PIERNIK, which is designed for simulations of diffusive propagation of the Cosmic-Ray (CR) component in the magnetized ISM.

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