[rolfseh]

I created a 2D mesh using Pointwise, and extruded 15 degrees using the rotate function. After that, I want to export into .cas file to run my simulation, it shows:

Error: Face processing failed.
Info: Check your grid for one of the following invalid situations:
Info: * Incompatible BC types used on opposite sides of a baffle or connection.
Info: * Non-manifold connectivity.
Info: The unmatched faces have been written to the VRML file: MY FILE
Info: Import this file as database to locate the problem areas in the grid.
Warning: Aborted Export CAE.

May I know what is the problem that I should change here? My version is V18.4 Release 3. I am attaching the screenshots of my geometry. Your help is highly appreciated, thanks!

Screen Shot 2021-04-01 at 1.37.19 PM.jpg Screen Shot 2021-04-01 at 1.36.44 PM.jpg

[dgarlisch]

This looks like it should work.

Did you import the VRML file to see where the unmatched faces are located? Post another image with the imported VRML data shaded.

Info: The unmatched faces have been written to the VRML file: MY FILE
Info: Import this file as database to locate the problem areas in the grid.

Is the block left handed? Use Edit, Orient... to check and fix if needed.

[rolfseh]

Hello David, thanks for the reply. I uploaded the VRML file, and I guess that I have a bad mesh there that occurs the error. Will try another mesh and see how it goes.

[pdp.aero]

Originally Posted by rolfseh

I created a 2D mesh using Pointwise, and extruded 15 degrees using the rotate function. After that, I want to export into .cas file to run my simulation, it shows:

Error: Face processing failed.
Info: Check your grid for one of the following invalid situations:
Info: * Incompatible BC types used on opposite sides of a baffle or connection.
Info: * Non-manifold connectivity.
Info: The unmatched faces have been written to the VRML file: MY FILE
Info: Import this file as database to locate the problem areas in the grid.
Warning: Aborted Export CAE.

May I know what is the problem that I should change here? My version is V18.4 Release 3. I am attaching the screenshots of my geometry. Your help is highly appreciated, thanks!

Attachment 83647 Attachment 83648

Not sure which version of fluent you were using but I assume the problem is the pole connector you defined. As far as I remember it 6.3.26 had such a problem. You may check this out.

[dgarlisch]

Originally Posted by rolfseh

Hello David, thanks for the reply. I uploaded the VRML file, and I guess that I have a bad mesh there that occurs the error. Will try another mesh and see how it goes.

If you can, please place both the PW file and the VRML into a ZIP archive and upload here or some other file-sharing service if the ZIP is too big.

If you licensing allows it, you can call or email Pointwise support directly. They will provide the best help.

[dgarlisch]

Originally Posted by pdp.aero

Not sure which version of fluent you were using but I assume the problem is the pole connector you defined. As far as I remember it 6.3.26 had such a problem. You may check this out.

Since fluent is a face-based format, it will normally not care about poles. The exporter ignores the collapsed faces.

I suspect the problem is that the rotation created an illegal cell with "QuadTri" connectivity at each end of the circular arc. These hex cells are exported as six quad faces. Two of which have a collapsed edge.

[pdp.aero]

Originally Posted by dgarlisch

Since fluent is a face-based format, it will normally not care about poles. The exporter ignores the collapsed faces.

I suspect the problem is that the rotation created an illegal cell with "QuadTri" connectivity at each end of the circular arc. These hex cells are exported as six quad faces. Two of which have a collapsed edge.

since my experience running Vassberg's structured grids on CRM on fluent I assumed fluent 6.3.26 has serious problems with poles.

[dgarlisch]

I have no experience with the Fluent products. My commentary is purely about the behavior and restrictions of Pointwise during export.

Originally Posted by pdp.aero

since my experience running Vassberg's structured grids on CRM on fluent I assumed fluent 6.3.26 has serious problems with poles.

[pdp.aero]

Originally Posted by dgarlisch

I have no experience with the Fluent products. My commentary is purely about the behavior and restrictions of Pointwise during export.

I appreciate your comment. I understand. My experience with fluent is also limited to 6.3.26 and goes back to many years ago.

[shubz]

Originally Posted by rolfseh

I created a 2D mesh using Pointwise, and extruded 15 degrees using the rotate function. After that, I want to export into .cas file to run my simulation, it shows:

Error: Face processing failed.
Info: Check your grid for one of the following invalid situations:
Info: * Incompatible BC types used on opposite sides of a baffle or connection.
Info: * Non-manifold connectivity.
Info: The unmatched faces have been written to the VRML file: MY FILE
Info: Import this file as database to locate the problem areas in the grid.
Warning: Aborted Export CAE.

May I know what is the problem that I should change here? My version is V18.4 Release 3. I am attaching the screenshots of my geometry. Your help is highly appreciated, thanks!

Attachment 83647 Attachment 83648

Hi , I had a similar problem when I was trying to model a thin/ baffle surface in Pointwise

I had mixed grids on my baffle surface and when the volume mesher was done , it would locally modify the grids on the baffle surface. When I brought in the .vml file that pointwise suggests , it showed me which cells were problematic . From the comments in this and other posts I figured that the problem might be related to mixed grids near that part of the geo. So I locally meshed the baffle in the problematic area only with tri cells and it worked.

Hopefully this helps someone struggling with the same issue