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Forum: OpenFOAM Running, Solving & CFD September 24, 2008, 08:50
Replies: 26
Views: 9,782
Posted By sega
Hello. I'm back again and m

Hello.

I'm back again and made some changes to the file above with the new information. Would anyone mind having a look at the equations?

There are still some questions (some of them...
Forum: OpenFOAM Running, Solving & CFD September 13, 2008, 10:53
Replies: 26
Views: 9,782
Posted By sega
Ok, so div( mu grad(U)^T )

Ok, so

div( mu grad(U)^T ) = grad(mu) . grad(U)^T = grad(U) . grad(mu)

is correct?

I converted like this

div( mu grad(U)^T ) = mu div( grad(U)^T ) + grad(U)^T grad(mu)
Forum: OpenFOAM Running, Solving & CFD August 30, 2008, 07:38
Replies: 26
Views: 9,782
Posted By sega
Sorry, I have missed one impor

Sorry, I have missed one important question.

What about the transposed gradient?
How do I treat this one?
Forum: OpenFOAM Running, Solving & CFD August 30, 2008, 07:37
Replies: 26
Views: 9,782
Posted By sega
Thanks! I made the correcti

Thanks!

I made the corrections to the PDF-file. Have a look.

Further unclarities are marked with the question mark. These are

- in the material derivative: Is there an identity...
Forum: OpenFOAM Running, Solving & CFD August 24, 2008, 04:22
Replies: 26
Views: 9,782
Posted By sega
Thank you Dave. Finally, I

Thank you Dave.

Finally, I can see where this will lead, and now I recognize the analogy to the equations in Ubbinks PhD-thesis. Obviously I have to be very carefully with the differential...
Forum: OpenFOAM Running, Solving & CFD August 21, 2008, 05:16
Replies: 26
Views: 9,782
Posted By sega
Yes, of course. Sorry. So m

Yes, of course. Sorry.

So my problem persists:
There are three components in the equation I don't understand. I haven't seen these terms in any incompressible Navier-Stokes so far.

1) ...
Forum: OpenFOAM Running, Solving & CFD August 20, 2008, 11:24
Replies: 26
Views: 9,782
Posted By sega
I had a look into the Programm

I had a look into the Programmers Guide.
It looks like the code is getting clearer to me, now.

Just to make sure I understand it right:

In the case of an incompressible fluid with...
Forum: OpenFOAM Running, Solving & CFD August 15, 2008, 08:56
Replies: 26
Views: 9,782
Posted By sega
Try this one: sebastian.gatzka

Try this one: sebastian.gatzka@gmx.de
Forum: OpenFOAM Running, Solving & CFD August 13, 2008, 05:43
Replies: 26
Views: 9,782
Posted By sega
Hello again! After looking

Hello again!

After looking into the UEqn.H file of the interFoam solver I gathered some more knowledge about the solver. But of course there are some further questions.

The UEqn.H defines a...
Forum: OpenFOAM Running, Solving & CFD July 21, 2008, 09:44
Replies: 26
Views: 9,782
Posted By sega
Having a deeper look into the

Having a deeper look into the PhD-thesis of Henrik Rusche I get the feeling, that this is a rather complete overview what interFoam is doing.

Is interFoam a result from this work?
And what is...
Forum: OpenFOAM Running, Solving & CFD July 10, 2008, 09:35
Replies: 26
Views: 9,782
Posted By sega
Hello. I'm trying to get a

Hello.

I'm trying to get a rather complete overview about what interFoam is doing and how it works.

What do you think is the best way of understanding a solver?

I had a quick look into...
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