[ICEM] Tetrahedral mesh from rectilinear grid

dizzy · May 24, 2012, 06:38

Hi all,

We have a 3D domain described by a rectilinear grid (3 arrays of x, y and z coordinates). Each brick is assigned to one of the materials. From this we need to create a tetrahedral mesh (simple dividing each brick into 5 or 6 tetras is ok at this moment) and assign materials correctly.

As far as I understand, the best way is to convert this rectilinear grid in some format that ICEM can export, then export it and create tetra mesh from hexa. Could someone suggest the most convenient format for this? (and how to deal with materials...)

Thanks for your help!

user_of_cfx · May 24, 2012, 10:23

Hi dizzy,

I'm not sure I understand your problem. You want to create tetrahedral mesh on this rectilinear grid. Since you want to divide the domain into bricks of different material (meaning there will be internal walls or interfaces of some sort), it may be better to use Ansys Workbench and by pass ICEM completely. You can import or build your geometry in Design Modeller and asign different material properties to each different section. There are quite a few tutorials in Ansys on how to do that.

I hope this helps?

Cheers, Christa

dizzy · May 25, 2012, 05:39

Hi Christa,

Thank you for your answer. The domain now is given by bricks. We don't have any geometric walls of surfaces, all we have are bricks of different materials. I want to import it in ICEM (also we have a license for GAMBIT, so we can use any of these two) and mesh. There are 20 materials so what I want is to get a geometry with 20 different sections.

Best,

May 24, 2012, 06:38	Tetrahedral mesh from rectilinear grid	#1
dizzy New Member Join Date: Jun 2011 Posts: 10 Rep Power: 15	Hi all, We have a 3D domain described by a rectilinear grid (3 arrays of x, y and z coordinates). Each brick is assigned to one of the materials. From this we need to create a tetrahedral mesh (simple dividing each brick into 5 or 6 tetras is ok at this moment) and assign materials correctly. As far as I understand, the best way is to convert this rectilinear grid in some format that ICEM can export, then export it and create tetra mesh from hexa. Could someone suggest the most convenient format for this? (and how to deal with materials...) Thanks for your help!

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
how to set periodic boundary conditions	Ganesh	FLUENT	15	November 18, 2020 07:09
Gambit problems	Althea	FLUENT	22	January 4, 2017 04:19
Mesh motion with Translation & Rotation	Doginal	CFX	2	January 12, 2014 07:21
[ICEM] Generating Mesh for STL Car in Windtunnel Simulation	tommymoose	ANSYS Meshing & Geometry	48	April 15, 2013 05:24
[snappyHexMesh] snappyHexMesh won't work - zeros everywhere!	sc298	OpenFOAM Meshing & Mesh Conversion	2	March 27, 2011 22:11

May 24, 2012, 10:23		#2
user_of_cfx Member Christa Join Date: Apr 2011 Posts: 53 Rep Power: 15	Hi dizzy, I'm not sure I understand your problem. You want to create tetrahedral mesh on this rectilinear grid. Since you want to divide the domain into bricks of different material (meaning there will be internal walls or interfaces of some sort), it may be better to use Ansys Workbench and by pass ICEM completely. You can import or build your geometry in Design Modeller and asign different material properties to each different section. There are quite a few tutorials in Ansys on how to do that. I hope this helps? Cheers, Christa

May 25, 2012, 05:39		#3
dizzy New Member Join Date: Jun 2011 Posts: 10 Rep Power: 15	Hi Christa, Thank you for your answer. The domain now is given by bricks. We don't have any geometric walls of surfaces, all we have are bricks of different materials. I want to import it in ICEM (also we have a license for GAMBIT, so we can use any of these two) and mesh. There are 20 materials so what I want is to get a geometry with 20 different sections. Best,