[ANSYS Meshing] Associations Problem

Dim_Cha · May 7, 2019, 11:53

Hallo to the community,

I want to aks for a problem a have. I am doing my Master Thesis and I have to mesh a SpraySyn standardized burner. After spliting the Blocks, editing the Associations and generating the Pre Mesh with No Projection everything is fine.
When I recompute the Pre - Mesh with projection to the Edges I have a disformations of the Cells. So my Mesh quality is confoundedly low. But the Asscociations looks optically correct.

Is anybody who can give a reason what could be the problem? For easiness I upload a picture with the problematic zone.

Thank you very much

59551778_584343802072883_3576929101472071680_n.jpg

AtoHM · May 8, 2019, 03:14

Hm, I dont think the big white arrow association of the central low point is correct. Delete it and recompute the pre-mesh, I assume this will fix it.

The edges are correctly associated its just that vertex.

Dim_Cha · May 8, 2019, 11:50

Yes, I know thats the Problem. I tried to fix the association but its not possible.

AtoHM · May 9, 2019, 03:02

How did you try to "fix" it?
Within the association menu there is an option to delete associations (its a yellow hand/finger with a red cross in the symbol). There you can choose to delete vertex/edge/face associations. Use the delete vertex association tool, select that vertex and hit mouse wheel to perform the action. This should remove the association (and the white arrow with it). Then rebuild the pre-mesh.

Dim_Cha · May 10, 2019, 06:02

Ok. I found the Problem. The surface was missing. Thanx

May 7, 2019, 11:53	Associations Problem	#1
Dim_Cha New Member Dimitrios Chantzaras Join Date: Feb 2019 Posts: 3 Rep Power: 7	Hallo to the community, I want to aks for a problem a have. I am doing my Master Thesis and I have to mesh a SpraySyn standardized burner. After spliting the Blocks, editing the Associations and generating the Pre Mesh with No Projection everything is fine. When I recompute the Pre - Mesh with projection to the Edges I have a disformations of the Cells. So my Mesh quality is confoundedly low. But the Asscociations looks optically correct. Is anybody who can give a reason what could be the problem? For easiness I upload a picture with the problematic zone. Thank you very much 59551778_584343802072883_3576929101472071680_n.jpg

May 8, 2019, 03:14		#2
AtoHM Senior Member M Join Date: Dec 2017 Posts: 703 Rep Power: 13	Hm, I dont think the big white arrow association of the central low point is correct. Delete it and recompute the pre-mesh, I assume this will fix it. The edges are correctly associated its just that vertex. Last edited by AtoHM; May 8, 2019 at 05:24.

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May 8, 2019, 11:50		#3
Dim_Cha New Member Dimitrios Chantzaras Join Date: Feb 2019 Posts: 3 Rep Power: 7	Yes, I know thats the Problem. I tried to fix the association but its not possible.

May 9, 2019, 03:02		#4
AtoHM Senior Member M Join Date: Dec 2017 Posts: 703 Rep Power: 13	How did you try to "fix" it? Within the association menu there is an option to delete associations (its a yellow hand/finger with a red cross in the symbol). There you can choose to delete vertex/edge/face associations. Use the delete vertex association tool, select that vertex and hit mouse wheel to perform the action. This should remove the association (and the white arrow with it). Then rebuild the pre-mesh.

May 10, 2019, 06:02		#5
Dim_Cha New Member Dimitrios Chantzaras Join Date: Feb 2019 Posts: 3 Rep Power: 7	Ok. I found the Problem. The surface was missing. Thanx