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Search took 0.00 seconds. Search: Posts Made By: fportela
Forum: OpenFOAM Running, Solving & CFD June 8, 2014, 15:51
Replies: 22
Views: 8,450
Posted By fportela
Hi there, I haven't looked at this in a long...

Hi there,

I haven't looked at this in a long time so I\ll have to try to answer your questions from (not so reliable) memory...


I only ran the 256^3 case once or twice (I was more...
Forum: OpenFOAM Running, Solving & CFD May 11, 2014, 13:05
Replies: 22
Views: 8,450
Posted By fportela
Hi anshul, Regarding your first question: ...

Hi anshul,

Regarding your first question:

The '&' operator is used for inner product as you can see here (http://www.foamcfd.org/Nabla/guides/ProgrammersGuidese4.html). If I am not mistaken...
Forum: OpenFOAM Running, Solving & CFD January 31, 2014, 09:06
Replies: 22
Views: 8,450
Posted By fportela
Hey, OK, my first question is regarding...

Hey,

OK, my first question is regarding temperature: did you add a source term to the energy equation? If so, you can easily see why temperature increases: adiabatic walls mean you don't "lose"...
Forum: OpenFOAM Running, Solving & CFD January 28, 2014, 15:09
Replies: 22
Views: 8,450
Posted By fportela
Hi there, Sorry for the late reply, haven't...

Hi there,

Sorry for the late reply, haven't had a chance to look at this for a while.

At a first glance I agree with your implementation of the source term. Would you share a few plots of your...
Forum: OpenFOAM Running, Solving & CFD January 18, 2014, 18:47
Replies: 22
Views: 8,450
Posted By fportela
Well if you have the walls set to constant...

Well if you have the walls set to constant temperature then there is something wrong with the temperature profile, so this suggests the total temperature approach may not be the best option (though I...
Forum: OpenFOAM Running, Solving & CFD January 18, 2014, 15:03
Replies: 22
Views: 8,450
Posted By fportela
But what is the BC at the wall for temperature?...

But what is the BC at the wall for temperature? If you use constant temperature I believe the core of the flow should be hotter and not the other way around.

Again, I am not sure about the...
Forum: OpenFOAM Running, Solving & CFD January 18, 2014, 14:29
Replies: 22
Views: 8,450
Posted By fportela
What RANS model are you using? I have little to...

What RANS model are you using? I have little to none experience with RANS but as I recall some are more appropriate for wall bounded flows than others, this associated with the over diffusive...
Forum: OpenFOAM Running, Solving & CFD January 18, 2014, 12:34
Replies: 22
Views: 8,450
Posted By fportela
Hi again, I never said I was happy with my...

Hi again,

I never said I was happy with my results, as I said: my application was implicit LES on a supersonic channel flow and I found rhoCentralFoam to be a bit too dissipative for such an...
Forum: OpenFOAM Running, Solving & CFD January 2, 2014, 06:16
Replies: 22
Views: 8,450
Posted By fportela
Hi there, I did get rid of the problem by...

Hi there,

I did get rid of the problem by stretching the mesh, near wall refinement eliminated the strange compression waves in my original post, however in order to achieve good statistics (I was...
Forum: OpenFOAM Running, Solving & CFD July 7, 2013, 21:22
Replies: 22
Views: 8,450
Posted By fportela
rhoCentralFoam for channel flow

Hello!

I have been trying to get results on a turbulent supersonic channel flow test case with rhoCentralFoam. have been trying to get results on a turbulent supersonic channel flow test case with...
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