Who here uses OpenFOAM ?

[Cd]

[QUOTE=ChrstphrR;80483]Fortran 90 is a particular standard of the Fortran language

Fortran for Lord Vorgon - ( sounds like some old Sci-fi movie character name )


Where did you find that Dolfyn program, Cd?

Codes -- CFD-Wiki, the free CFD reference

There is also a good one called FeatFlow.


( BTW : My internet / phone line has suddenly developed problems )

I hope I'm able to post this before I lose my connection.

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[Cd]

I think I'm still on, since I see my last posting.

I have a question for you : If I create a model in a program like Blender, can use it in a CFD program, or does it actually have to be created in a special CFD specific program ?
Everytime that I see an image of a model in a CFD simulation, it just looks like a regular polygon model.

[albcem]

Originally Posted by Cd

I think I'm still on, since I see my last posting.

I have a question for you : If I create a model in a program like Blender, can use it in a CFD program, or does it actually have to be created in a special CFD specific program ?
Everytime that I see an image of a model in a CFD simulation, it just looks like a regular polygon model.

Hello,

I am a quite capable user of OpenFOAM and I can help people with their simulation needs. You can check out my company, CAEbridge's simulation portfolio on this issue.

Best,

Cem

[Cd]

And the cost ?

[albcem]

Originally Posted by Cd

And the cost ?

The cost can depend on the scope of the project (commercial or personal), the prospect for additional simulation runs and obviously the simulation case complexity. So to keep the answer simpler it can range from "free" with some collaborative mutual benefit to some appropriate amount based on the above variables in other cases.

Cem

[dcb]

Originally Posted by Cd

I would love to use the program, but I am horrible in math.

I don't know the options yet. Wanted to simulate some kammback/fairing options and was looking at openfoam just yesterday and saying "damn this is tricky"

But the problem of course is much bigger, as first I have to scan my vehicle in (like some diy 3d laser scanner), preferrably with someone in the drivers seat, then can start tweaking the aerodyamics.

But would like to find something visually oriented too.

[albcem]

Originally Posted by dcb

I don't know the options yet. Wanted to simulate some kammback/fairing options and was looking at openfoam just yesterday and saying "damn this is tricky"

But the problem of course is much bigger, as first I have to scan my vehicle in (like some diy 3d laser scanner), preferrably with someone in the drivers seat, then can start tweaking the aerodyamics.

But would like to find something visually oriented too.

Well, not to defend my position, CFD is no joke and often requires MS/PhD level knowledge in fluid dynamics, applied mathematics and computer science. If one wants to utilize an open source package like OpenFOAM, "tricky" becomes an understatement as it is not a black box type of application.

Scanning is definitely another issue. I have worked in the automotive industry for 5 years and $ cost is quite steep for a good scanning job. If you are thinking of modding a production vehicle design, I would recommend you to look into 3D Mesh databases online to see if there is a descent reproduction of the external shape. I resorted to this method for a Mazda 6 vehicle for an article I published in a magazine and I was within less than 5% for Cd! May be I was a little bit lucky, but what matters is to prove your concept relative to an initial unmodified design (we call it looking at deltas in the industry). So absolute numbers may not matter that much...

Cem

Cem

[Cd]

Albcem , thanks for your reply. I didn't mean to ignore you. ( Or be rude in any way. )

dcb Have you seen the post on the FREE laser scanning program that was just recently posted at this site ?
( I lost the link DOOOPPP ! I'm looking for it now. )

EDIT : Looks like you are very aware of the 3D scanner ... since you posted it .
Thanks a million man !

[KamperBob]

FYI, there is a Windows version of OpenFOAM on Source Forge since this thread started.
OpenFOAM for MS windows binary release | Get OpenFOAM for MS windows binary release at SourceForge.net

Cheers
KB

[Cd]

Thanks a billion KamperBob !