[MOAB-dev] Cylindrical Mesh

[Patrick Shriwise]

It sounds like there's support for 2nd order hexes which can be used as 
cylindrical mesh elements but in a Cartesian coordinate system?


what is a cylindrical mesh element?
maybe expressed in cylindrical coord system?
there is some support for spherical coord system for some special nc meshes (basically quads are in
lat / lon coordinates)

anyway, I don't understand what is the need

Iulian,

There is a researcher who wants to use the discretize_geom function in 
PyNE <http://pyne.io/> to get the volume fractions of some geometry 
which is in cylindrical coordinates. Essentially, the answer is yes to 
your second question.

Cheers,

Patrick




On 07/01/2015 09:44 AM, Paul Wilson wrote:
> Hi Patrick,
>
> It's certainly possible to represent a cylindrical mesh with 2nd-order 
> hexes (and prisms at the center).
>
> Determining volume fractions via ray-firing using DAGMC is not 
> currently supported on 2nd-order mesh elements, however.
>
> Paul
>
> On 07/01/2015 09:23 AM, Patrick Shriwise wrote:
>> Hi all,
>>
>> I think there was a thread about this a while ago... I recently got 
>> an email from someone at GWU asking about a geometry/mesh library 
>> which can do volume fractions in cylindrical coordinates. They were 
>> originally looking for a way to do this via the pytaps interface, but 
>> are willing to use other methods if they are available.
>>
>> I feel like I remember someone mentioning that there is access to 
>> cylindrical mesh elements in MOAB, but I couldn't be sure. Is this 
>> true or am I daydreaming?
>>
>> Cheers,
>>
>> Patrick
>

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