[GAMBIT] Information on Mesh Volumes

EddyC · February 26, 2012, 08:41

Hello,
I am trying to mesh a catalytic converter in GAMBIT and I am completely new to this.
I wanted to know where to use the hex mesh and tetrahedral mesh.
I would like to know instances where these different types of meshes are used and possibly the advantages of using them.

I agree this is pretty basic stuff but I would like to get this sorted as I will be able to best justify my methods to my seniors.

Any help would be appreciated

.

-mAx- · February 27, 2012, 02:28

Any geometry may be subdivided into smaller domains (splits).
Splits strategy may allow you to mesh those smaller domains with hexa mesh (if it is possible)
If not then you can choose tetrahedral mesh.

Benefits for hexa: accuracy, faster convergence and less cells count (for same mesh density in comparison with tetra). But it has a cost: time for achieving full hexa mesh.
At the other hand, you have tetrahedral mesh, which could be quick generated.

EddyC · February 27, 2012, 14:24

Thank you very much MAX.

February 26, 2012, 08:41	Information on Mesh Volumes	#1
EddyC New Member Akshay Join Date: Feb 2012 Posts: 3 Rep Power: 14	Hello, I am trying to mesh a catalytic converter in GAMBIT and I am completely new to this. I wanted to know where to use the hex mesh and tetrahedral mesh. I would like to know instances where these different types of meshes are used and possibly the advantages of using them. I agree this is pretty basic stuff but I would like to get this sorted as I will be able to best justify my methods to my seniors. Any help would be appreciated .

February 27, 2012, 02:28		#2
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	Any geometry may be subdivided into smaller domains (splits). Splits strategy may allow you to mesh those smaller domains with hexa mesh (if it is possible) If not then you can choose tetrahedral mesh. Benefits for hexa: accuracy, faster convergence and less cells count (for same mesh density in comparison with tetra). But it has a cost: time for achieving full hexa mesh. At the other hand, you have tetrahedral mesh, which could be quick generated. __________________ In memory of my friend Hervé: CFD engineer & freerider

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February 27, 2012, 14:24		#3
EddyC New Member Akshay Join Date: Feb 2012 Posts: 3 Rep Power: 14	Thank you very much MAX.