[ICEM] Speicherschutzverletzung status 139 SegFault?

derkaiser · October 3, 2013, 06:04

Hello,

i'm meshing a vaned duct with icemcfd. I want to generate an unstructured mesh from an all tri surface mesh.
For surface meshing i used the patch dependent and patch indipendent algorithm. Minimum quality of the surface mesh after smoothing is about 0,45. The mesh has no errors (holes etc.)
Afterwards i tried to generate a tetra volume mesh with one layer of prisms which i want so split afterwards to resolve the boundary layer. For this i used the octree mesher and the delaunay triangulation. Mesh generation process runs but does not create a volume mesh.
The last messages icem prints are:

updating node connections
trilateral round to curve
Speicherschutzverletzung
status 139
applicatioin is finished
Error: tetra didn't create ./tetra_mesh.uns

I searched for status 139 and get a clue, that this means a segmentation fault. I can assure, that i do not run out of memory. I also tried different resolutions for the surface mesh but with no success.

Now i'm quite clueless what to do to get a successful generation of the volume mesh.

Maybe someone can give me a hint?

derkaiser

Far · October 3, 2013, 07:02

Can you please show some pics?

Why you are running patch dependent and octree at the same time?

derkaiser · October 3, 2013, 08:47

I will add some pictures later.

Is there a problem running the octree mesher with a given surface mesh? In my understanding the surface mesh should be used as an input for the octree mesher. I tried to close the mesh and only run the octree mesher but with the same results.

Does anyone know, what status 139 means?

Far · October 3, 2013, 09:37

For octree, surface mesh is not required.

derkaiser · October 3, 2013, 16:26

Seems like in my case, a surface mesh for octree is required. When i close the mesh and want to calculate the volume mesh using the octree module, i get an error message, that there's no mesh.
I guess, that there is some error with the saving of the calculated mesh. May this be the case because i'm am using an academic teaching license?

derkaiser · October 4, 2013, 03:08

Here are two pictures of my geometry. I use a symmetry plane to reduce the cell number.

October 3, 2013, 06:04	Speicherschutzverletzung status 139 SegFault?	#1
derkaiser New Member Christian Join Date: Dec 2009 Posts: 9 Rep Power: 16	Hello, i'm meshing a vaned duct with icemcfd. I want to generate an unstructured mesh from an all tri surface mesh. For surface meshing i used the patch dependent and patch indipendent algorithm. Minimum quality of the surface mesh after smoothing is about 0,45. The mesh has no errors (holes etc.) Afterwards i tried to generate a tetra volume mesh with one layer of prisms which i want so split afterwards to resolve the boundary layer. For this i used the octree mesher and the delaunay triangulation. Mesh generation process runs but does not create a volume mesh. The last messages icem prints are: updating node connections trilateral round to curve Speicherschutzverletzung status 139 applicatioin is finished Error: tetra didn't create ./tetra_mesh.uns I searched for status 139 and get a clue, that this means a segmentation fault. I can assure, that i do not run out of memory. I also tried different resolutions for the surface mesh but with no success. Now i'm quite clueless what to do to get a successful generation of the volume mesh. Maybe someone can give me a hint? derkaiser

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October 3, 2013, 07:02		#2
Far Super Moderator Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,553 Blog Entries: 6 Rep Power: 54	Can you please show some pics? Why you are running patch dependent and octree at the same time?

October 3, 2013, 08:47		#3
derkaiser New Member Christian Join Date: Dec 2009 Posts: 9 Rep Power: 16	I will add some pictures later. Is there a problem running the octree mesher with a given surface mesh? In my understanding the surface mesh should be used as an input for the octree mesher. I tried to close the mesh and only run the octree mesher but with the same results. Does anyone know, what status 139 means?

October 3, 2013, 09:37		#4
Far Super Moderator Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,553 Blog Entries: 6 Rep Power: 54	For octree, surface mesh is not required.

October 3, 2013, 16:26		#5
derkaiser New Member Christian Join Date: Dec 2009 Posts: 9 Rep Power: 16	Seems like in my case, a surface mesh for octree is required. When i close the mesh and want to calculate the volume mesh using the octree module, i get an error message, that there's no mesh. I guess, that there is some error with the saving of the calculated mesh. May this be the case because i'm am using an academic teaching license?