I tried to google and see if some people did some type or aerodynamic wind study with FreeCAD but did not find any examples.
Anybody here who has experience with FreeCAD doing this?
Imagine a basic house and you study how wind will flow thought it or a concept car body you sculpted and how it would perform in a wind tunnel.
FreeCAD is Mac and pc which makes this interesting to research and possibly propose to design students to consider.
Hello, why not see CfdOF forum?
https://forum.freecadweb.org/viewforum.php?f=37&sid=e6d66f2d2d68f64679f141a616dfd24f
See https://forum.freecadweb.org/viewtopic.php?t=44364 , if you’re serious about using CfdOF Wb and OpenFOAM then forget the Mac it’ll make life a lot more difficult than Windows.
Thomas (@thschader) has written an installation doc for Windows in the Tutorials subforum https://forum.freecadweb.org/viewtopic.php?f=36&t=52381 this post should be moved to CfdOF subforum IMHO. I use some macros to build a wind tunnel for a Millennium Falcon purely for playing purposes, certainly wish had more time to do real aero work.
Edit : Corrected installation doc location
Done.
Check these two threads:
I wonder if there is another Cekuhnen active in the forum, who even uses the same avatar and signature: https://forum.freecadweb.org/viewtopic.php?t=61950.
@bitacovir made a wind tunnel https://forum.freecadweb.org/viewtopic.php?f=24&t=22139
Calculation of drag-coefficient of an old house.
Location: Amrum-island, North sea, nearby Denmark.
In the end I got a drag-coeff of 1,3 matching with the design-manuals.
Zip contains FC-files (antenna+house) and smath-file for sim settings.
https://en.smath.com/view/SMathStudio/summary
Project is from 2019, the FC-files wont load correct with the newest FC-dev snapshot,
But maybe you get an idea how to run this stuff. Hope that helps.
Was a nice summer day, I could do a little sunbathing on the ferry… 
cfd_sim.zip (108 KB)
Here is a fresh one:
I needed the max U at the top of the tree (red).
Model is a basic start, add turbulence-model and more mesh-refinement/boundary-layers.
Meshing: cfmesh. Converting to stl needs some minutes, but mesher runs fast.
Simplefoam: even with a rough starting mesh you get over 1 Mio cells. Simulations needs some time (on my intel i5)
windTree.FCStd (153 KB)
I use bluecfd 2020 and
OS: Windows 10 Version 2009
Word size of FreeCAD: 64-bit
Version: 0.20.27428 (Git)
Build type: Release
Branch: master
Hash: 27460358508a2057e0ec57a418641435f12628dd
Python version: 3.8.6+
Qt version: 5.15.2
Coin version: 4.0.1
OCC version: 7.5.3
Locale: German/Germany (de_DE)
Joko with some approach on Wind Simulation:
https://www.youtube.com/watch?v=sCBPnt50pDc&t=1s
This is awesome!
Very nice work!!!
Installing is a much more involved process, but I wouldn’t say using it is a lot more difficult than Windows. A bit, yes, but in exchange for being able to actually do CFD without having to acquire a whole new computer or dual-boot, I think it’s worth it. I’m hoping to improve the Mac support along with some other contributions I’m planning in the next few months–we’ll see how that goes. I have been known to grossly overestimate how much I can get done in a given amount of time.
@KAKM has tested on macOS and provided instructions in this forum post (linked in the Readme) which should make the process a lot easier.
Thomas (@thschader) has written an installation doc for Windows in the Tutorials subforum > https://forum.freecadweb.org/viewtopic.php?f=36&t=52381 >
This guide helps a lot to elucidate what is going on behind the scenes, but note that you should now be able to install everything more straightforwardly directly from the CfdOF properties page by following the instructions in the Readme file.
Thats called baby brain - I had no recollection that I posted this and nothing come up when I did a search too.
Brilliant - more posts where added later so this is great to investigate ! Thank you for the mental reminder Chrisb!