Now that I have a reasonably fast CPU again I descended into the #CFD rabbit hole again. #OpenFOAM has a really steep learning curve (it is the opposite of plug-and-play). I last touched it in 2016. So far I have mostly modified some tutorial projects, but it is fascinating. The image shows the pressure distribution (red: higher, blue: lower) on a crude P.180 model created in #OpenVSP.

#computationalfluiddynamics

Just nailed it: Fully automated 3D geometry for CFD pure FreeCAD (headless) + Snakemake magic 😆 . No AI, just smart scripting. Open Source engineering wins again!
#VirtualEngineering #FreeCAD #OpenFOAM #OpenSource

If when you execute `paraFoam` in #OpenFOAM you get `paraview: not found` and you could not repair it, you can create a `.foam` file via `foamToVTK` and save the output to a .foam file and open it via #paraview.

#LetsLearnOpenFOAM

For users of #OpenFOAM your most used solver is: #hpc #CFD

Hace unos días se publicó OpenFOAM version 13, la distribución de la OpenFOAM Foundation (https://openfoam.org).

Se puede instalar en la última versión de Ubuntu (25.04) y en las dos últimas LTS.

En windows, se usa el Windows Subsystem for Linux.

En mac se usa Canonical Multipass, no tengo muy claro lo que es y me da pereza probarlo.

Otros Linux pueden requerir compilar el programa.

#openfoam

خیلی خوشحال میشوم وقتی میبینم یک نرم‌افزار تخصصی «آزاد» در #ایران توسط عموم متخصصین استفاده میشود و شناخته‌شده است. #OpenFOAM در زمینهٔ #مکانیک #سیالات این خاصیت را دارد.

#نرم‌افزار_آزاد

#OpenFOAM smoothMesh。
OpenFOAM用のメッシュスムーサーらしい。ライセンスはGPL3。

https://github.com/tkeskita/smoothMesh

OpenFOAM用GUI XSim Ver.0.21 をリリースしました。OpenFOAM 12形式でのエクスポート機能を追加しています。 #OpenFOAM
https://xsim.work/doc/ja/ReleaseNote.html

Getting a bit further with my exploration of Computational Fluid Dynamics (CFD) this evening. Using the mighty @FreeCAD I've modelled this "Ballute" style parachute and simulated it descending at 6m/s in air. The air velocity is plotted in the images. Ace to see the turbulence in the point cloud/steam chaser view. If any #CFD experts fancy a chat.... I HAVE QUESTIONS! #OpenFOAM #FreeCAD

Following on from my earlier stuff about being inspired about parachute/recovery systems and Ballute design in @FreeCAD I've dived into setting up the CfDoF workbench and bashing through a simple tutorial pushing water through a stepped tube. I think I borked the glyph a little, but I feel like I've learnt a little... and seen a LOT to learn. #OpenFOAM #CFD #Paraview

@FreeCAD @goatchurch
Using a model of an @avian Evo3 as the demo. Simulated using #openfoam #cfd

Fantastic to see this article about #FreeCAD and #OpenFOAM being used to perform CFD analysis on #rocket designs. Lots of mentions for Dave Carter who is a fabulous FreeCAD contributor and creator of the Rocket Workbench. Check out the excellent Peak Of Flight rocketry newsletter here https://www.apogeerockets.com/Peak-of-Flight/Newsletter641

Optimist in virtual twisted flow wind tunnel created in OpenFOAM :)

#optimistclass #openfoam #DS_VTFWT

#OpenFOAM のESI版を数年ぶりにインストールしてるんだけど、ESI版はバイナリ配布やめて自分でビルドしなくちゃいけなくなったのか。

When we say #freesoftware, we usually think about #programming softwares like :vim: or general softwares like :gnome:. But, I see it necessary to thank the people who spend their valuable time to create expert free softwares to save people to use #nonfreesoftware for their specialties.
#freecad #librecad #inkscape #krita #kicad #solvespace #openfoam

وقتی میگوییم #نرم‌افزار_آزاد بیشتر به یاد نرم‌افزارهای مرتبط با #برنامه‌نویسی مثل :vim: و نرم‌افزارهای عمومی مثل :gnome: میافتیم. ولی لازم میدانم تشکر کنم از کسانیکه زمان باارزش خود را میگذارند تا برای رشته‌های تخصصی مختلف نرم‌افزار آزاد بنویسند تا آنها اسیر برنامه‌های انحصاری برای تخصص خود نشوند. سپاس!
#freecad #librecad #inkscape #krita #kicad #solvespace #openfoam

@jk I can't tell why but this reminds me on #OpenFOAM 🙄 . The finite volume library is nice and people are able to do stunning things with it, but inherentency hell grows with every solver.

Really enjoyed chatting to Tim from @avian earlier this week. Their use of #python #freecad #openfoam and #openvsp is pretty amazing and creates fantastic flying machines! Check out the writeup on the @FreeCAD blog. https://blog.freecad.org/2024/07/30/forged-in-freecad-avian-hang-gliders/

@FreeCAD currently working on a cargo bike based on open hardware #vhélio https://vhelio.org/

On this modified version, I want to add rain protection, reduce air drag, and improve passengers security.

#FreeCAD is of great help to get precise dimensions on first manufacturing try, check collisions, optimize the shape thanks to fluid dynamics simulations (#CfdOF #OpenFOAM), design and simulate mechanisms, and so on.

(thread in french about the project: https://masto.bike/@youen/112247628229532347)