1D turbulence test case

luka86pt · May 23, 2012, 07:09

Hello everyone,
I'm doing uncertainty quantification and I need to run 1D test case simulations.
I'd like to know if openFoam is a good solver for a 1D channel flow turbulence k-epsilon model solution.
I'm supposed to use fluent, but it doesn't have monodimensional solution right?
Is there a better software for monodimensional simulations, or do you think that the best thing would be to write a solver?

Thanks in advance,

Luca

luka86pt · June 14, 2012, 06:02

I'm sorry, I'll try to explain.
I'm running a turbulent channel flow test case on Fluent but Fluent doesn't accept 1D domain and I need to add 3 knots in the streamwise direction and to set a periodic condition, so at the end I get 3xnumber of 1D elements. Does Openfoam or other solvers allow you to set a 1D domain for this case (I need k-eps standard model as Fluent)?
I'm running about 2000 simulations so it would be really less expensive! So maybe if I don't find anything I should write a solver?! But I don't have enough experience to do it fast =P

Is it clear now? Thanks in advance!

wyldckat · June 14, 2012, 10:00

Greetings Luca,

It's a bit ironic, because if it were not for the spammer, I wouldn't even had noticed your thread.

Additionally, it's good that you've detailed more your question. Hopefully someone will be able to answer you.

Best regards,
Bruno

pycckuu · April 9, 2015, 07:24

Quote:

Originally Posted by luka86pt

Hello everyone,
I need to run 1D test case simulations... k-epsilon model solution.
Luca

I am also interested, there is a possibility to make 1d simulations using special case of 3d and symmetric around axis case.

wenxu · November 6, 2016, 05:36

Anyone has experience with the 1D simulation with OF?

olivierG · November 7, 2016, 04:52

hello,

Yes, you can do 1D: just use empty BC for front, back and side, and just set BC on bottom/top. Work well for me.

But turbulence k-e simulation on 1D seem .. original !

regards,
Olivier

wenxu · November 7, 2016, 05:25

Quote:

Originally Posted by olivierG

hello,

Yes, you can do 1D: just use empty BC for front, back and side, and just set BC on bottom/top. Work well for me.

But turbulence k-e simulation on 1D seem .. original !

regards,
Olivier

Thank you for your information!

In your case, it is the non-reacting fluid flow or reacting one? I do not know whether the 1D flame can be simulated by OF.

Best regards,
Xu

olivierG · November 7, 2016, 05:27

hello,

In my case it was a plasma simulation, so similar to a reacting solver.

regards,
Olivier

wenxu · November 7, 2016, 05:29

Thanks, I should have a try!

arya123xyz · May 20, 2019, 07:38

Sir, can you post the test case you tried in OF ?

May 23, 2012, 07:09	1D turbulence test case	#1
luka86pt New Member Luca M. Join Date: May 2012 Posts: 2 Rep Power: 0	Hello everyone, I'm doing uncertainty quantification and I need to run 1D test case simulations. I'd like to know if openFoam is a good solver for a 1D channel flow turbulence k-epsilon model solution. I'm supposed to use fluent, but it doesn't have monodimensional solution right? Is there a better software for monodimensional simulations, or do you think that the best thing would be to write a solver? Thanks in advance, Luca

June 14, 2012, 06:02		#2
luka86pt New Member Luca M. Join Date: May 2012 Posts: 2 Rep Power: 0	I'm sorry, I'll try to explain. I'm running a turbulent channel flow test case on Fluent but Fluent doesn't accept 1D domain and I need to add 3 knots in the streamwise direction and to set a periodic condition, so at the end I get 3xnumber of 1D elements. Does Openfoam or other solvers allow you to set a 1D domain for this case (I need k-eps standard model as Fluent)? I'm running about 2000 simulations so it would be really less expensive! So maybe if I don't find anything I should write a solver?! But I don't have enough experience to do it fast =P Is it clear now? Thanks in advance! wenxu likes this.

June 14, 2012, 10:00		#3
wyldckat Retired Super Moderator Bruno Santos Join Date: Mar 2009 Location: Lisbon, Portugal Posts: 10,981 Blog Entries: 45 Rep Power: 128	Greetings Luca, It's a bit ironic, because if it were not for the spammer, I wouldn't even had noticed your thread. Additionally, it's good that you've detailed more your question. Hopefully someone will be able to answer you. Best regards, Bruno __________________ OpenFOAM: FAQ \| Getting started Forum: How to get help, to post code/output and forum guide Read this before sending me PM

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November 6, 2016, 05:36		#5
wenxu Senior Member Freedom Join Date: May 2014 Posts: 209 Rep Power: 13	Anyone has experience with the 1D simulation with OF?

November 7, 2016, 04:52		#6
olivierG Senior Member Olivier Join Date: Jun 2009 Location: France, grenoble Posts: 272 Rep Power: 18	hello, Yes, you can do 1D: just use empty BC for front, back and side, and just set BC on bottom/top. Work well for me. But turbulence k-e simulation on 1D seem .. original ! regards, Olivier

November 7, 2016, 05:27		#8
olivierG Senior Member Olivier Join Date: Jun 2009 Location: France, grenoble Posts: 272 Rep Power: 18	hello, In my case it was a plasma simulation, so similar to a reacting solver. regards, Olivier

November 7, 2016, 05:29		#9
wenxu Senior Member Freedom Join Date: May 2014 Posts: 209 Rep Power: 13	Thanks, I should have a try!

May 20, 2019, 07:38		#10
arya123xyz New Member arya123xyz Join Date: Sep 2015 Posts: 4 Rep Power: 11	Sir, can you post the test case you tried in OF ?