Mesh generation

[phillip mobley]

Hello everyone,

I have a question for the community. I have a solidworks model for a motor that I would like to simulate in deal.II. To do this, I will need to generate a mesh that deal.II can read. Due to the complexitiy, I am unable to simply create the 3D model via code.

I was wondering, what 3rd party mesh generator does the community use? Solidworks can export the model into a number of different formats so compatibility is not an issue for me. I myself am currently looking through google for a program that can do this.

Also, on an off-handed question, I am just getting started with deal.II and I was also wondering if anyone created a getting started guide

[Martin Steigemann]

Dear Philip,

 

you can export your CAD model in IGES or STEP format for example and mesh with Cubit from Sandia Labs,

 

https://cubit.sandia.gov/

 

export in UCD format and read with dealii, this works for me, but as far as I remember Cubit is not free.

 

Best,

Martin

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[phillip mobley]

Oh ok thanks, I will have to take a look.

I did find a free mesh generator called gmsh: http://geuz.org/gmsh/

Not too sure how well it will work but I intend to try it soon!

[Bruno Turcksin]

Phillip,

On Wednesday, July 8, 2015 at 8:09:52 AM UTC-5, phillip mobley wrote:

Oh ok thanks, I will have to take a look.

I did find a free mesh generator called gmsh: http://geuz.org/gmsh/

Not too sure how well it will work but I intend to try it soon!

gmsh works fine and deal.II can directly load the mesh generated by gmesh see https://dealii.org/8.2.1/doxygen/deal.II/step_49.html#grid_1Loadingameshgeneratedbygmsh However, note that deal.II can only work with quadrilaterals in 2D (which works fine with gmsh) and hexahedra in 3D (sometimes gmsh creates over-refined meshes).

Best,

Bruno

[Wolfgang Bangerth]

Philip,

> I have a question for the community. I have a solidworks model for a motor
> that I would like to simulate in deal.II. To do this, I will need to generate
> a mesh that deal.II can read. Due to the complexitiy, I am unable to simply
> create the 3D model via code.
>
> I was wondering, what 3rd party mesh generator does the community use?
> Solidworks can export the model into a number of different formats so
> compatibility is not an issue for me. I myself am currently looking through
> google for a program that can do this.

In addition to the answers others have already given, take a look here:

https://github.com/dealii/dealii/wiki/Frequently-Asked-Questions#how-do-i-create-the-mesh-for-my-problem

> Also, on an off-handed question, I am just getting started with deal.II and I
> was also wondering if anyone created a getting started guide

We don't seem to have anything of this sort. I imagine one would say "Install
deal.II" and "Read and play with the tutorials" there. What else would you
expect in such a document?

Best
W.


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Wolfgang Bangerth email: bang...@math.tamu.edu
www: http://www.math.tamu.edu/~bangerth/