[ICEM] Transform Mesh Problem in ICEM CFD

Vicky44 · November 13, 2018, 06:57

Hi
I have a problem in ICEM CFD in copying the meshing repeatedly.
The attached picture illustrates the problem clearly.
I would like to copy the groove for 50 times for which I created a mesh transform copy with merge nodes option. But when I import in fluent I am getting a error of [Segmentation Violation].
I am pretty sure that the reason is due to the transform geometry because I exported once without this option and it worked fine.

Kindly help me out.

Thanks in advance

Gert-Jan · November 14, 2018, 04:05

ICEM warms you that you have uncovered faces. Did you ignore this?

Vicky44 · November 15, 2018, 03:16

Yes, but I dont know how to solve this error ICEM.
The error is happening only after I do the mesh transformation. Without doing this when I export, everything works good.

I think I am making some mistakes in the selection. (I select all volumes and shell elements)

I am not sure whether I need to select the interfaces also or not. Anyway it is not working

Could you help me out. ?

Gert-Jan · November 15, 2018, 03:26

If you go to Edit Mesh and then look for the icon that allows you to check you mesh on errors (third or fourth icon?). In the selection menu there is an option to check for uncovered faces (amoung many). When ICEM finds these, it allows you to fix them. I think by putting them into a part. This could be your interfaces, or create a new part.

Then at least you can see where they are. If the new part is a valid one, export the mesh to fluent to see it it works out.

kad · November 20, 2018, 09:54

If I got it right you only want to copy the mesh that is shown in the box in the upper left corner? I think mesh extrusion would be a more elegant way to go. Maybe it is possible to add 50 more layers by extrusion in negative x-direction.

Vicky44 · November 27, 2018, 04:12

Thank you everyone for the reply but I got it right.
The mesh was not representing the model properly, so the problem accured.

I reduced the triangulation tolerance and it worked

Hazem24 · March 22, 2020, 08:08

Dear Vicky,

What do you do to generate a mesh transform (rotate for example)
If I have 1/3 of my model and I want to rotate it to make the full model, after selecting and all I don't see an apply button to click. and also middle mouse button doesn't do it. Any help ?

November 27, 2018, 04:12		#6
Vicky44 New Member Vignesh Ravi Join Date: Oct 2018 Posts: 6 Rep Power: 8	Thank you everyone for the reply but I got it right. The mesh was not representing the model properly, so the problem accured. I reduced the triangulation tolerance and it worked kad likes this.

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November 14, 2018, 04:05		#2
Gert-Jan Senior Member Gert-Jan Join Date: Oct 2012 Location: Europe Posts: 1,928 Rep Power: 28	ICEM warms you that you have uncovered faces. Did you ignore this?

November 15, 2018, 03:16		#3
Vicky44 New Member Vignesh Ravi Join Date: Oct 2018 Posts: 6 Rep Power: 8	Yes, but I dont know how to solve this error ICEM. The error is happening only after I do the mesh transformation. Without doing this when I export, everything works good. I think I am making some mistakes in the selection. (I select all volumes and shell elements) I am not sure whether I need to select the interfaces also or not. Anyway it is not working Could you help me out. ?

November 15, 2018, 03:26		#4
Gert-Jan Senior Member Gert-Jan Join Date: Oct 2012 Location: Europe Posts: 1,928 Rep Power: 28	If you go to Edit Mesh and then look for the icon that allows you to check you mesh on errors (third or fourth icon?). In the selection menu there is an option to check for uncovered faces (amoung many). When ICEM finds these, it allows you to fix them. I think by putting them into a part. This could be your interfaces, or create a new part. Then at least you can see where they are. If the new part is a valid one, export the mesh to fluent to see it it works out.

November 20, 2018, 09:54		#5
kad Senior Member Join Date: Feb 2013 Location: Germany Posts: 200 Rep Power: 24	If I got it right you only want to copy the mesh that is shown in the box in the upper left corner? I think mesh extrusion would be a more elegant way to go. Maybe it is possible to add 50 more layers by extrusion in negative x-direction.