topic Re: Unable to open or run converted files to run in CFD in CFD Forum

Unable to open or run converted files to run in CFD

jlwilliam352 — Mon, 15 May 2023 05:29:35 GMT

Hello, I have not been able to convert or create CAD project in CFD in order to create a CFD simulation. I have tried to convert to and open skp, stl, and dwg/dwf to stp and sat files, but no luck. If can't do this then CFD serves no purpose.

Any help is appreciated please thank you!

Re: Unable to open or run converted files to run in CFD

marwan_azzam — Mon, 15 May 2023 12:57:51 GMT

Hi @jlwilliam352 ,

Just to clarify, are you saying that Autodesk CFD cannot open any skp, stl, and dwg/dwf , stp, and sat files?

Or are you saying CFD cannot convert skp, stl, and dwg/dwf to stp, and sat files?

If you have a model open in CFD you can export the CAD geometry to an ACIS (*.sat) file.

If I misunderstood please provide more detail.

Marwan

Re: Unable to open or run converted files to run in CFD

jlwilliam352 — Mon, 15 May 2023 13:52:36 GMT

Hello Marwan,

Thank you for replying. It some the files converted to be read as stp, dfx, or dwg CFD won't open them or recogni,ed them as a 3d Object.

I can convert a .stl file to a CAD file (i.e. Geometry or or other 3d object files) that can that can perform a simulations.

Other instances I received an error along the lines ":unable to open the specified geometry"

I was able to run a simulation in the past tgis year, but I believe that was prior to Autodesk's update of CFD. There maybe a process I done that simply don't remember as well.

Re: Unable to open or run converted files to run in CFD

marwan_azzam — Mon, 15 May 2023 14:05:29 GMT

Hello @jlwilliam352 ,

This most probably caused by the CAD geometry.

I usually stay away from stl files because of the sheer number of faces/surfaces.

If you can provide one or more sample files you're having issues with I'd be happy to take a look.

Marwan

Re: Unable to open or run converted files to run in CFD

jlwilliam352 — Fri, 19 May 2023 18:13:14 GMT

thank you for your help. Attached is obj file and stl file. I've imported a obj file in the past after fixing any issues and never had a problem with CFD until now. I think has something to do with the file type since Autodesk has updated their software recently.

Thanks again for help

Re: Unable to open or run converted files to run in CFD

marwan_azzam — Mon, 22 May 2023 14:57:49 GMT

Hi @jlwilliam352 ,

This is not due to some change in Autodesk CFD. Those files are strange (tried them in other apps we have) and are unworkable.

Marwan

Re: Unable to open or run converted files to run in CFD

jlwilliam352 — Wed, 24 May 2023 18:40:13 GMT

Okay, what is the best option to convert a sketchup file type to a readable and operable file type for CFD? I believe converted or saved a .skp file as a .obj file and was able to run it in CFD last year.