[ICEM] Periodic Tet Mesh

RalfBecker · April 16, 2015, 07:04

I would like to mesh a rather simple geometry with a tetra mesh and two translation periodic boundaries. I have setup the periodicty with "GLOBAL MESH SETUP -> PERIODICITY". With the OCTREE Mesher it works like expected, while any other mesher (Advancing Front, Delaunay, TGrid) does not generate a periodic mesh. Checking the periodicity with "RIGHT BUTTON MESH -> Periodicty" I get the message "No periodicty defined".

Which steps are necessary to generate a periodic mesh with these meshing algorithms?

Thank you in advance
Ralf

RalfBecker · April 20, 2015, 10:35

ok, in the mean time I have found a solution which works in my case:

define periodicity (global mesh setup)
create patch dependent surface mesh on one of the surfaces with periodicity defined
Mesh Repair -> Make Periodic -> Auto, select meshed surface
Move Nodes -> Lock Nodes
Surface Mesh Setup: "Respect Line Elements" & "Protect Line Elements"
Patch dependent surface mesh on remaining surfaces
Merge nodes -> Single Edges
Create Volume Mesh

Hope this helps in future
Kind Regards,
Ralf

timotie87 · March 26, 2020, 17:57

I'm trying to do something similar, but when I try to Repair Mesh, Make Periodic, it only allows me to select single nodes, not the whole surface.

syavash · July 11, 2020, 08:14

Quote:

Originally Posted by timotie87

I'm trying to do something similar, but when I try to Repair Mesh, Make Periodic, it only allows me to select single nodes, not the whole surface.

Same here, No "Auto" option!

syavash · July 11, 2020, 08:21

Quote:

Originally Posted by RalfBecker

ok, in the mean time I have found a solution which works in my case:

define periodicity (global mesh setup)
create patch dependent surface mesh on one of the surfaces with periodicity defined
Mesh Repair -> Make Periodic -> Auto, select meshed surface
Move Nodes -> Lock Nodes
Surface Mesh Setup: "Respect Line Elements" & "Protect Line Elements"
Patch dependent surface mesh on remaining surfaces
Merge nodes -> Single Edges
Create Volume Mesh

Hope this helps in future
Kind Regards,
Ralf

Hi Ralf,

I know it's a rather old post, but I cannot manage to find the "Make Periodic -> Auto, select meshed surface" option, nor the "Merge nodes -> Single Edges" one.
Would you mind to elucidate a little further?

Kind regards,
syavash

April 16, 2015, 07:04	Periodic Tet Mesh	#1
RalfBecker New Member Ralf Becker Join Date: Feb 2011 Posts: 7 Rep Power: 15	I would like to mesh a rather simple geometry with a tetra mesh and two translation periodic boundaries. I have setup the periodicty with "GLOBAL MESH SETUP -> PERIODICITY". With the OCTREE Mesher it works like expected, while any other mesher (Advancing Front, Delaunay, TGrid) does not generate a periodic mesh. Checking the periodicity with "RIGHT BUTTON MESH -> Periodicty" I get the message "No periodicty defined". Which steps are necessary to generate a periodic mesh with these meshing algorithms? Thank you in advance Ralf

April 20, 2015, 10:35		#2
RalfBecker New Member Ralf Becker Join Date: Feb 2011 Posts: 7 Rep Power: 15	ok, in the mean time I have found a solution which works in my case: define periodicity (global mesh setup) create patch dependent surface mesh on one of the surfaces with periodicity defined Mesh Repair -> Make Periodic -> Auto, select meshed surface Move Nodes -> Lock Nodes Surface Mesh Setup: "Respect Line Elements" & "Protect Line Elements" Patch dependent surface mesh on remaining surfaces Merge nodes -> Single Edges Create Volume Mesh Hope this helps in future Kind Regards, Ralf Far likes this.

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March 26, 2020, 17:57		#3
timotie87 New Member Tim Join Date: May 2016 Posts: 11 Rep Power: 10	I'm trying to do something similar, but when I try to Repair Mesh, Make Periodic, it only allows me to select single nodes, not the whole surface.