On 04/26/2017 02:35 AM, Alexander Gary Zimmerman wrote:

As for the documentation: I indeed missed that detail from
SphericalManifold; but*there is a very misleading statement in the
hyper_ball documentation:*"You should attach a SphericalManifold
<http://dealii.org/8.5.0/doxygen/deal.II/classSphericalManifold.html> to
the cells and faces for correct placement of vertices upon refinement
and to be able to use higher order mappings." I would guess that this
could lead many people to (at least initially) make my mistake, so maybe
a small edit to note the pitfall could be made here.

Indeed. Can you open a github issue at https://github.com/dealii/dealii/issues/new about this? Of course, we would also gladly accept a patch to the documentation!


So if I want to have a solid sphere domain with a spherical manifold
throughout it's entirety, I understand that my best option is to use a
hyper_shell with a very small inside radius.

That would mean that you have a hole in your domain -- that's probably not what you want. But I think in reality, you want to read the discussion here:

https://www.dealii.org/8.5.0/doxygen/deal.II/step_6.html#Abettermesh

Best
 W.



--
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Wolfgang Bangerth          email:                 [email protected]
                           www: http://www.math.colostate.edu/~bangerth/

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