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Search took 0.00 seconds. Search: Posts Made By: alberto
Forum: OpenFOAM Running, Solving & CFD April 1, 2014, 16:14
Replies: 100
Views: 27,069
Posted By alberto
I have updated the tutorial to work with 2.3.x...

I have updated the tutorial to work with 2.3.x (based on the pimpleFoam/channel395 tutorial). The code did not require any change. You find the updated code here:
...
Forum: OpenFOAM Running, Solving & CFD April 1, 2014, 13:51
Replies: 100
Views: 27,069
Posted By alberto
The problem is that the library containing the...

The problem is that the library containing the model cannot be found, as the solver tells you:



You should check where the library is written, and verify that location is accessible.

Note...
Forum: OpenFOAM Running, Solving & CFD May 5, 2013, 12:43
Replies: 100
Views: 27,069
Posted By alberto
Looking at the code of the two solvers, they are...

Looking at the code of the two solvers, they are both compressible, but they use different packages for the thermodynamic properties (see comments in the code).
Forum: OpenFOAM Running, Solving & CFD May 5, 2013, 00:52
Replies: 100
Views: 27,069
Posted By alberto
The code I wrote is for incompressible flow...

The code I wrote is for incompressible flow solvers, and it is added to the library of incompressible LES models. The reactingFoam solver is compressible, and uses the compressible LES models.
...
Forum: OpenFOAM Running, Solving & CFD May 4, 2013, 12:03
Replies: 100
Views: 27,069
Posted By alberto
A quick checklist: - Did the code compile...

A quick checklist:

- Did the code compile successfully?
- Can you run the test case provided with the code?

Best,
Forum: OpenFOAM Running, Solving & CFD April 8, 2012, 17:29
Replies: 100
Views: 27,069
Posted By alberto
For your information, I moved my repository to...

For your information, I moved my repository to bitbucket, so future versions will be here:

https://bitbucket.org/albertop/dynamicsmagorinsky
Forum: OpenFOAM Running, Solving & CFD February 7, 2012, 20:49
Replies: 100
Views: 27,069
Posted By alberto
Yes, Perry is right :-) Btw, you could also...

Yes, Perry is right :-)

Btw, you could also consider the langrangianDynSmagorinsky model in OpenFOAM 2.x, which is based on a more rigorous treatment of the dynamic coefficient.

Best,
Forum: OpenFOAM Running, Solving & CFD January 5, 2012, 10:25
Replies: 100
Views: 27,069
Posted By alberto
The value should be bounded to kMin_. Best,

The value should be bounded to kMin_.

Best,
Forum: OpenFOAM Running, Solving & CFD August 9, 2011, 10:04
Replies: 100
Views: 27,069
Posted By alberto
Hi, depending on your case you need to initialise...

Hi, depending on your case you need to initialise the simulation with a perturbed field to favour the development of the turbulent structures. There are is a tool in the forum for channel flows...
Forum: OpenFOAM Running, Solving & CFD July 23, 2011, 14:13
Replies: 100
Views: 27,069
Posted By alberto
Bug corrected upstream, and fix merged in my...

Bug corrected upstream, and fix merged in my modified version. You can download it from the usual git repository ( https://github.com/AlbertoPa/dynamicSmagorinsky ).

Thanks for pointing this out....
Forum: OpenFOAM Running, Solving & CFD July 18, 2011, 11:08
Replies: 100
Views: 27,069
Posted By alberto
Hi, I agree. However, since the problem also...

Hi, I agree. However, since the problem also affects homogeneousDynSmagorinsky, I think you should report it on OpenCFD bug tracker. This might provide an explanation too.

Best,
Forum: OpenFOAM Running, Solving & CFD July 18, 2011, 03:39
Replies: 100
Views: 27,069
Posted By alberto
I am sorry, I pointed to the wrong reference in...

I am sorry, I pointed to the wrong reference in my last post. The implementation of LES models in OpenFOAM is based on:

C. Fureby, G. Tabor, H. G. Weller, ...
Forum: OpenFOAM Running, Solving & CFD July 15, 2011, 12:07
Replies: 100
Views: 27,069
Posted By alberto
Hi, my code is entirely based on what OF calls...

Hi, my code is entirely based on what OF calls "homogeneousDynSmagorinsky" model. I think the reference is not Germano et al. but Lilly (1992) "A proposed modification of the Germano subgrid-scale...
Forum: OpenFOAM Running, Solving & CFD July 5, 2011, 14:22
Replies: 100
Views: 27,069
Posted By alberto
I released it this morning. Note that the version...

I released it this morning. Note that the version for OpenFOAM 2.0.x *breaks* the compatibility with 1.7.x.
If you need both, take a look at the README. However I am not going to update the version...
Forum: OpenFOAM Running, Solving & CFD June 11, 2011, 23:07
Replies: 100
Views: 27,069
Posted By alberto
Numerically I do not see any problem. It would...

Numerically I do not see any problem. It would just be like solving for an inviscid flow. Physically it could not be meaningful however.



Yes, I agree.

Best,
Forum: OpenFOAM Running, Solving & CFD June 11, 2011, 22:32
Replies: 100
Views: 27,069
Posted By alberto
Yes, correct. Yes. Notice however...

Yes, correct.



Yes. Notice however that FLUENT forces nu_sgs > 0, which is not the case, and I do not do.

Best,
Forum: OpenFOAM Running, Solving & CFD April 1, 2011, 02:41
Replies: 100
Views: 27,069
Posted By alberto
Happy to share! :)

Happy to share! :)
Forum: OpenFOAM Running, Solving & CFD February 17, 2011, 14:51
Replies: 100
Views: 27,069
Posted By alberto
Good the code is useful to someone :-)

Good the code is useful to someone :-)
Forum: OpenFOAM Running, Solving & CFD February 9, 2011, 04:22
Replies: 100
Views: 27,069
Posted By alberto
Hi Yashar, it cannot. The implementation I...

Hi Yashar,

it cannot. The implementation I released works for incompressible solvers. For the compressible version you need to implement a compressible dynamic Smagorinsky model (see for example...
Forum: OpenFOAM Running, Solving & CFD January 23, 2011, 13:11
Replies: 100
Views: 27,069
Posted By alberto
Hi Yashfar, nothing to worry about. You can...

Hi Yashfar,

nothing to worry about. You can safely ignore the warning. It happens sometime when using libraries through controlDict.

Best,
Forum: OpenFOAM Running, Solving & CFD January 12, 2011, 15:53
Replies: 100
Views: 27,069
Posted By alberto
No, I do not know any pre-defined plane-averaging...

No, I do not know any pre-defined plane-averaging method.

Additionally, keep in mind that Germano's formulation for Cs is different from Lilly's formulation. Lilly's formulation in theory is...
Forum: OpenFOAM Running, Solving & CFD December 27, 2010, 02:01
Replies: 100
Views: 27,069
Posted By alberto
Exactly. k_SGS is an output of the model, and it...

Exactly. k_SGS is an output of the model, and it is defined explicitly (check the code to see how).

Best,
Forum: OpenFOAM Running, Solving & CFD December 26, 2010, 08:50
Replies: 100
Views: 27,069
Posted By alberto
Hi, Your professor is correct. :D The...

Hi,


Your professor is correct. :D
The turbulent kinetic energy you measure from experiments is the trace of the Reynolds stress tensor, while the SGS turbulent kinetic energy is the kinetic...
Forum: OpenFOAM Running, Solving & CFD December 23, 2010, 00:57
Replies: 100
Views: 27,069
Posted By alberto
It is not explicitly needed by the Smagorinsky...

It is not explicitly needed by the Smagorinsky model itself. A field named "k" has to be present because of how the LES models have been implemented.

These questions would find an answer by simply...
Forum: OpenFOAM Running, Solving & CFD December 14, 2010, 12:46
Replies: 100
Views: 27,069
Posted By alberto
I added a modified version of channel395 to the...

I added a modified version of channel395 to the git repository, where the model is enabled. I hope this makes things a bit more clear.

Best,
Showing results 1 to 25 of 31
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