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Forum: OpenFOAM Running, Solving & CFD February 4, 2013, 04:03
Replies: 17
Views: 4,197
Posted By colinB
Hi Mathias, sry for my late reply, and just...

Hi Mathias,

sry for my late reply, and just on a short note:

increase friction: - what are the boundary conditions on the lower wall?
You might want to set U to fixed...
Forum: OpenFOAM Running, Solving & CFD January 28, 2013, 07:44
Replies: 17
Views: 4,197
Posted By colinB
Hey Mathias, the video looks quite...

Hey Mathias,

the video looks quite promising.

In the first series of calculation the problem appears to be that in the end part
of the domain, the Fn cannot decrease fast enough so the water...
Forum: OpenFOAM Running, Solving & CFD January 28, 2013, 02:30
Replies: 17
Views: 4,197
Posted By colinB
Good Morning Mathias, Generally speaking...

Good Morning Mathias,

Generally speaking yes. However to get this clear phenomena of the
hydraulic jump it might be better to increase the Fn.

In my previous post I linked a wikipedia article...
Forum: OpenFOAM Running, Solving & CFD January 25, 2013, 03:50
Replies: 17
Views: 4,197
Posted By colinB
Dear Mathias, What I expected actually you...

Dear Mathias,

What I expected actually you can see from the attached drawings.
Basically I thin we are talking about the same, but I expressed myself
a little but clumsy.

I had a look at...
Forum: OpenFOAM Running, Solving & CFD January 24, 2013, 04:35
Replies: 17
Views: 4,197
Posted By colinB
Dear Mathias, please follow this link: ...

Dear Mathias,

please follow this link:

http://www.openfoam.org/docs/user/basic-file-format.php#x18-1020004.2.8

look in this section for the keyword: internalField, where you can specify
a...
Forum: OpenFOAM Running, Solving & CFD January 23, 2013, 08:10
Replies: 17
Views: 4,197
Posted By colinB
Hi Mathias, on a short note: did you...

Hi Mathias,

on a short note:
did you initialize the internal filed with the same velocity as the inlet?
For there seems to occur a blockage in the end part of your domain.

I hope that helps...
Forum: OpenFOAM Running, Solving & CFD January 17, 2013, 08:40
Replies: 17
Views: 4,197
Posted By colinB
Hi Mathias, I defined the top and bottom...

Hi Mathias,

I defined the top and bottom with slip, since I didn't want to have any friction/
boundary layer there. However if you modell the boundarylayer you would use
fixedValue 0 on the...
Forum: OpenFOAM Running, Solving & CFD January 17, 2013, 05:52
Replies: 17
Views: 4,197
Posted By colinB
Hey Mathias, I had to do something similar...

Hey Mathias,

I had to do something similar for my thesis.
my BCs were:


U prgh alpha1
airInlet fixed Value ...
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