[ryan_malatesta]

Hello!


I'm very new to using openFoam, so forgive me if this is a rather basic question. Quick background - for a university project I'm trying to find the stall angle of 6 NACA-0015 airfoils, each with vortex generators at different positions (and one control). I switched to openFoam so I could use a bisection search to find the stall angle for each case, instead of brute forcing every possible angle of attack.


I've created a mesh using ANSYS meshing and exported it as a .msh file. I'm then trying to use fluentMeshToFoam to convert it to a foam mesh, but I'm getting an error. After running the command, the last three lines the terminal displays before the command seems to fail are:

dimension of grid: 3
Creating shapes for 3-D cells
Building patch-less mesh...Killed

Some other things that may be relevant: I'm running this through WSL on a machine with 6 cores and 16gb of ram. According to the fluentMeshToFoam output, the mesh file has 17,777,620 cells, 35,978,788 faces, and 3,203,602 points. The number of cells seems very high, but it has similar element sizes to an example we ran in class. However, the example was 2D and only had ~200k nodes (run in fluent).


Is there something in fluentMeshToFoam I might be running incorrectly, or do I just have too many cells? (And as a side note, should I decrease the density of my mesh for any other reasons I might encounter down the road in this project?)


Thanks for any help provided,
-Ryan

[fanta]

Hi, you need to export your .msh in the ASCII Format.
It's in the options of Ansys.
Next, you might need to call fluent3DMeshToFoam instead of fluentMeshToFoam, because the output of fluentMeshToFoam prints you have 3 dimensions.