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PIERNIK MHD code – a multi–fluid, non–ideal extension of the relaxing–TVD scheme (III)

Published online by Cambridge University Press:  17 September 2012

M. Hanasz ,
K. Kowalik ,
D. Wóltański  and
R. Pawłaszek
M. Hanasz
Affiliation:
Toruń Centre for Astronomy, Nicolaus Copernicus University, Toruń, Poland. e-mail: [email protected];
K. Kowalik
Affiliation:
Toruń Centre for Astronomy, Nicolaus Copernicus University, Toruń, Poland. e-mail: [email protected];
D. Wóltański
Affiliation:
Toruń Centre for Astronomy, Nicolaus Copernicus University, Toruń, Poland. e-mail: [email protected];
R. Pawłaszek
Affiliation:
Toruń Centre for Astronomy, Nicolaus Copernicus University, Toruń, Poland. e-mail: [email protected];
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Abstract

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; 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 Ohmic resistivity extension of the original Relaxing TVD MHD scheme, and show examples of magnetic reconnection in cases of uniform and current–dependent resistivity prescriptions.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 56: The Role of the Disk-Halo Interaction in Galaxy Evolution: Outflow vs. Infall? , 2012 , pp. 363 - 366
Copyright
© EAS, EDP Sciences, 2012

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References

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