[kilojoules]

I want to export an exodus grid of an airfoil. I think that I need to make the mesh three dimensional with a depth of one grid cell in order to do that. I downloaded the airfoilmesh script from github and generated the default airfoil. At this point, everything is looking great! This is exactly the mesh I want in Exodus format.

First, I select the mesh then go to file>export>export mesh. There are many options for output formate for the mesh, but Exodus is not one of the options. So, I think I need to extrude the mesh to give it some depth. My hope is that this will give me the option to select the exodus output format.

I tried using the extrude tool to do this. I select the entire airfoil, change the view to the +X direction, the select Create>Extrude>Normal. Yellow arrows point outwards in the direction I want to extrude this mesh. When I press "Run 1," the mesh becomes this funny-looking tangled web and it says that 2 cells met the negative jacobian stopping condition and 527 cells met other stop conditions.

How can I export this airfoil as an exodus mesh file? My understanding is that, to do this, I need to somehow transform the 2D airfoil grid into a 3D grid with a depth of one cell.

[buzuzu]

Use the script "Thicken2Dto3D" available at pointwise GitHub page to extrude the grid by one cell. This will turn the 2D domian into a 3D block.

[dgarlisch]

Assuming the exodus to which you refer is the same as EXODUS II, you want to use CAE export when exporting to the EXODUS II solver.

As far as I know, you do NOT need to thicken your grid to one cell depth. The EXODUS II CAE exporter has an option for 2D grids.

Basic instructions:

• Open your 2D airfoil PW file
• Menu CAE, Select Solver... / Select EXODUS II
• Menu CAE, Set Dimension, 2D
• Menu CAE, Set Boundary Conditions...
  • Create BCs (Side Sets and Node Sets) as needed for your grid
  • Select connectors and assign to appropriate BCs
  • Close
• Menu CAE, Set Volume Conditions...
  • Create VCs as needed for your grid
  • Select domains and assign to appropriate BCs
  • Close
• Select all domains
• Menu File, Export, CAE... / specify filename.exo
• Save

FYI, the difference between CAE export and Grid export is that CAE export supports the creation, assignment, and export of solver specific BCs and VCs as described above.

Grid export ignores BCs and VCs and only exports grid data.