[MOAB-dev] [Meshkit-dev] Fwd: [cgma-dev] Adapting Meshkit to Stretched Grid

[Tim Tautges (ANL)]

In EBMesh's setup_this function, an SCDMesh MeshOp is obtained; one of the capabilities of SCDMesh is to pass in the 
locations of the grid lines on each axis; this would be the SCDMesh::GridSchemeType = vtxMesh.  Unfortunately, it 
appears that there is no SCDMesh function for specifying those locations, although there are private variables 
SCDMesh::[i,j,k]_arr that appear to store those locations, and those locations are used in SCDMesh.cpp to place vertices 
in the structured mesh.

So, I think you'll have to a) modify SCDMesh to add the ability for the application to specify [i,j,k]_arr division 
locations, and b) modify EBMesh to do the same.  Or alternatively, have your application explicitly create an SCDMesh 
object, and modify EBMesh to be able to take that instead of creating its own.

Let me know if you have questions about how to do that, and if you do make those modifications, please send them back 
and we'll put them into MeshKit for you.

- tim

On 01/14/2014 01:28 PM, Jane Hu wrote:
> Forwarding to moab and meshkit dev for better assistance on this.
>
> Jane
>
> ---------- Forwarded message ----------
> From: *Alexander Vizard* <avizard at gwmail.gwu.edu <mailto:avizard at gwmail.gwu.edu>>
> Date: Tue, Jan 14, 2014 at 1:02 PM
> Subject: [cgma-dev] Adapting Meshkit to Stretched Grid
> To: cgma-dev at mcs.anl.gov <mailto:cgma-dev at mcs.anl.gov>
>
>
> Hello,
>
> I am a researcher at George Washington University, aiming to use MeshKit to to find volume fractions for a
> fluid-structure interaction problem, which I will solve using an in-house immersed boundary CFD code. The surface
> geometry that I plan to use is in .stl format, so my understanding is that I do not need to configure the MeshKit with
> the "iGeom" option. I am able to configure the MeshKit with iMesh successfully, following all steps on the "How do I
> build MeshKit for EBMesh" page, except the final step for running the test executable, for I have not included the iGeom
> software in the configuration which I assume the test requires.
>
> My question now is as follows: the 3D cartesian fluid grid that I will use on my fluid simulation is stretched in the
> vertical and streamwise directions (finer grid near the wall, for example). My understanding is that this should not be
> a problematic change to implement into the volume fraction solver, but I am unsure of how to approach the alterations.
> As always, any assistance and insight that you can provide is greatly appreciated.
>
> Sincerely,
>
> Alexander Vizard
> avizard at gwmail.gwu.edu <mailto:avizard at gwmail.gwu.edu>
>
>
>
> --
> Jane Hu
>
> Asst. Researcher
> Dept. of Engineering Physics
> UW @ Madison
>
> "And we know that for those who love God, that is, for those who are called according to his purpose, all things are
> working together for good." (Romans 8:28)
>
>
> _______________________________________________
> Meshkit-dev mailing list
> Meshkit-dev at mcs.anl.gov
> https://lists.mcs.anl.gov/mailman/listinfo/meshkit-dev
>

-- 
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"You will keep in perfect peace him whose mind is
   steadfast, because he trusts in you."               Isaiah 26:3

              Tim Tautges            Argonne National Laboratory
          (tautges at mcs.anl.gov)      (telecommuting from UW-Madison)
  phone (gvoice): (608) 354-1459      1500 Engineering Dr.
             fax: (608) 263-4499      Madison, WI 53706