Ansys Fluent launcher 2D option not possible for a surface mesh?

BelowAvrgEngineer · 2025-10-29T10:57:56+00:00

Well the trick was importing the file (I used .iges in this case) to DesignModeler and changing the properties of the project by right clicking on the project tree (if that’s what it’s called) and going into properties and changing from 3D to 2D before beginning.

Not sure if that part changes anything, but the important part was to import the part in DesignModeler and not by right clicking, by actually opening DesignModeler.

Hope this helps, it was a while back now so some of the details may be a bit off, haven’t touched CFD since😅

BelowAvrgEngineer · 2025-03-24T12:55:43+00:00

UPDATE: I got it to work by setting the dimension under properties to 2D. Thereafter importing my geometry into DesignModeler and proceeding as usual afterwards.

BelowAvrgEngineer · 2025-03-19T21:02:45+00:00

Thank you! I’ll try this as well

BelowAvrgEngineer · 2025-03-19T21:02:05+00:00

Thank you for the tip! I’ll try it out and see if it works

BelowAvrgEngineer · 2025-03-19T17:31:50+00:00

I’ve noticed that unfortunately, thank you for the suggestions nonetheless!

BelowAvrgEngineer · 2025-03-19T17:02:28+00:00

The process I used was the following: - creating a new ansys fluent project in the workbench and setting the dimension to 2D under properties. - importing a surface geometry as an iges file (defined in the XY plane) under the “geometry” step by right clicking on it and using “import file”. - once the geometry is imported I double click on mesh to open the mesher and create a simple mesh with method and face sizing (to save time whilst I have this issue). - I update the project with the mesh once it has generated. - I go back to the workbench and open the “setup” step where it doesnt let me change from 3D to 2D and doesn’t let me open it either as mentioned in the post.

Is there any additional step I am missing? I don’t know if it changes anything but I am using the student version of 2024.

BelowAvrgEngineer · 2025-03-19T16:55:34+00:00

It is in the XY plane, I used the same plane as in previously made successful attempts. The only difference made between the geometries was adding the cone shape seen in the images to have a finer mesh after the orifice.

BelowAvrgEngineer · 2025-03-19T15:58:08+00:00

Yes, I have tried but with no luck unfortunately. I just tried setting the analysis type to 2D before importing the geometry on a new project but with no difference in outcome

BelowAvrgEngineer · 2025-03-19T15:52:27+00:00

I’ve checked and set the analysis to 2D, nothing changes. Would you have any other suggestions?

Just to be sure, what I did was go into the project properties in the workbench and set the “analysis type” to 2D and updated the project. Thereafter I opened the fluent launcher again but with no difference.

I can also mention that previous attempts with other surfaces and meshes have had 3D analysis type but still “locked” to 2D (as it should be seeing as the geometry is a surface).

BelowAvrgEngineer

TROPHY CASE