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

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dc.contributor.author Hanasz, Michał
dc.contributor.author Kowalik, Kacper
dc.contributor.author Wóltański, Dominik
dc.contributor.author Pawłaszek, Rafał
dc.contributor.author Kornet, Kacper
dc.date.accessioned 2012-12-19T09:06:12Z
dc.date.available 2012-12-19T09:06:12Z
dc.date.issued 2008-12-15
dc.identifier.other doi:10.1051/eas/1042030
dc.identifier.uri http://repozytorium.umk.pl/handle/item/240
dc.description.abstract We present a new multi-fluid, grid MHD code PIERNIK, which is based on the Relaxing TVD scheme (Jin and 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 introduce the multifluid extension of Relaxing TVD scheme and present a test case of dust migration in a two-fluid disk composed of gas and dust. We demonstrate that due to the difference in azimuthal velocities of gas and dust and the drag force acting on both components dust drifts towards maxima of gas pressure distribution.
dc.language.iso eng
dc.relation.uri http://arxiv.org/abs/0812.2799
dc.rights info:eu-repo/semantics/openAccess
dc.subject Astrophysics
dc.title PIERNIK mhd code - a multi-fluid, non-ideal extension of the relaxing-TVD scheme (II)
dc.type info:eu-repo/semantics/article

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