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-   -   [ICEM] How to make elements not to belong to both domains (http://www.cfd-online.com/Forums/ansys-meshing/89000-how-make-elements-not-belong-both-domains.html)

dizzy June 1, 2011 04:31

How to make elements not to belong to both domains
 
Hi all,

I'm making the following simple mesh in ICEM: sphere made of two materials. To add them I need to create a tetra mesh with all elements either in first or second hemisphere.
I tried to create a surface dividing the sphere into two hemispheres and then mesh it in different ways (meshing the surface first or not, playing with options), but still there are tetras that belong to BOTH hemispheres. I read in tutorials about one possible solution (create mesh for the first part, then for the second part and then merge them), but is there a more simple way? :)

Thanks!

jeevankumarb June 1, 2011 05:19

Hello,
Create two saperate material points inside the two hemispheres. Then you generate the mesh you will have two domains.

Regards

dizzy June 20, 2011 08:40

I don't understand why, but some tetra elements still belong to both domains.

I create a sphere, then a surface (circle) inside it, then add material points.

dizzy November 30, 2011 07:36

Hi! Could anyone suggest something? I'm creating a more complex geometry now and merging meshes is quite complicated...

Still dividing a sphere into two by putting materials points in them doesn't prevent from tetras on the boundary that belong to both domains.

p@ri$2009 November 30, 2011 14:25

Hi!

I would suggest you to make two half hemispheres that you will define as two deffirent material (that means that you define two deffirent type of elements from the beginning). Mesh them alltogether and then put contact pair in the two surfaces that come close to each other. Then run the model.
I don't know if this help you,i hope at least that I gave you an idea.
Good luck.


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