Figure 14 shows examples of the type of mesh adaptation used. The top left panel shows the meridional
cut of an accretion disk on a uniform multiblock mesh (model C in [256
]). The top right panel gives an
example of a mesh with adapted radial coordinate lines, which resolves the disk more accurately than the
mesh with uniform grid resolution (see [256
] for details on the particular coordinate transformations used to
obtain such a grid). A 3D view of such multi-domain mesh at large radii is shown on the bottom left panel
of Figure 14
. In the area near the inner radius where the central black hole is located, the resolution
is high enough to accurately resolve the shape and the dynamics of the black-hole horizon.
Finally, near the disk, the resolution across the disk in both radial and angular directions is
made approximately equal and sufficiently high to resolve the transverse disk dynamics. The
bottom right panel of Figure 14
shows the 3D view of the adapted mesh in the vicinity of the
disk.
http://www.livingreviews.org/lrr-2012-9 |
Living Rev. Relativity 15, (2012), 9
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