Global Magneto-Hydrodynamic Simulations of Differentially Rotating Accretion Disk by Astrophysical Rotational Plasma Simulator View Full Text


Ontology type: schema:Chapter     


Chapter Info

DATE

2001-04-06

AUTHORS

Mami Machida , Ryoji Matsumoto , Shigeki Miyaji , Kenji E. Nakamura , Hideaki Tonooka

ABSTRACT

We present numerical results of three-dimensional global magneto-hydrodynamic (MHD) simulations achieved on Astrophysical Rotating Plasma Simulator (ARPS) developed at Chiba University. We simulate the time evolution of differentially rotating disks by using a parallelized three-dimensional MHD code. Typical number of grid points is (NNr,Nϕ,NNr) = (200, 64, 240) in a cylindrical coordinate system. We found that when the initial magnetic field is toroidal and relatively strong, the system approaches a quasi-steady state with β = Pgas/Pmag ~ 5. When the disk is threaded by vertical magnetic fields, magnetically driven collimated jet emanates from the surface of the disk. Fully vector-parallelized global simulations with ARPS enable us to study non-local effects such as magnetic pinch, saturation of nonlinear growth of instability, and deformation of the global structure. More... »

PAGES

328-335

Book

TITLE

High Performance Computing

ISBN

978-3-540-41128-4
978-3-540-39999-5

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/3-540-39999-2_31

DOI

http://dx.doi.org/10.1007/3-540-39999-2_31

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1046498337


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