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-   -   Unsteady solver with Flamelet Model (libOpenSMOKE) (http://www.cfd-online.com/Forums/openfoam-solving/108841-unsteady-solver-flamelet-model-libopensmoke.html)

francesco_capuano November 2, 2012 11:08

Unsteady solver with Flamelet Model (libOpenSMOKE)
 
Dear all,

in the libOpenSMOKE user guide (http://creckmodeling.chem.polimi.it/UserGuide.pdf) the authors talk about a flamelet version of rhoPisoFoam "under testing and validation". To my knowledge, the solver has not been released anymore.

I have successfully tried the steady version, rhoSimpleFoamFlamelets - many thanks to the authors for that - and would like to try the unsteady one.

Do you have any news about that?

Thanks in advance,
Francesco

Tobi November 10, 2012 13:08

Hi,

I wrote my masterthesis the last 7 month about that flameletmodel.

You should know that there are some bugs in the model!!!

http://www.cfd-online.com/Forums/ope...tml#post386239


The libraries are very nice and I build the unsteady solver.
But for now there are some problems with the "non-adiabatic" simulations. They are all wrong. In my release its possible to simulate freestream flames correctly but for closed geometries the radiation model is completely wrong (like for combustion cambers) and the enthalpiedefekt is wrong if you calculate non-adiabatics!

Greatings tobi


PS: on sept there should be a new version but still not avaiable.
I am very familiar with the solver and the whole code of albertos tool.

Now I have 3 weeks left to finish my thesis and after that, I ll share my updated flamelet solver tool.

Tobi

francesco_capuano November 11, 2012 13:59

Hi Tobias,

thank you very much for your reply. I'm interested in flamelet solvers for OpenFOAM, so I think I'll be back to you soon :D

Good luck for your thesis!
Francesco

Tobi November 12, 2012 02:37

HI Francesco,

well I am the only one (with Tom Farner) who are interessted in that solver. Well Tom has not so much time for trying the solver and so on but I had to validate the solver and doing complex camber combustion with it. Yesterday I solved the "LAST" bug in the libraries.

After the long time I have to say, that the flamelet solver is a very greate tool. I wrote to alberto many times but he never replayed me :(

So I had to get familiar with the code, and here I am :)
I changed a few things in the solver and will bring out a User Guide for it. I am not sure when the new libraries from alberto will come but I can say that my flameletsolver is working correctly for the cases I used it for.


The only thing which is bad is, that alberto is just sharing his binaries for building the flamelet libraries and look-up-tables.

Regard Tobi

yash.aesi July 25, 2013 06:33

about the flamelet model
 
hello,
I want to use this flamelet model for simulating the lifted flames . So can anyone guide me how to start it , i already read the user guide of this model .......

babakflame July 25, 2013 14:13

Hi sonu

Before using the solver, you should take a look at your flame. you should
keep in mind that steady flamelet may not give you correct answers for lifted flames. My proposal for you is using firefoam with FSD combustion model which is actually a flamelet/progress variable approach that uses one
reaction for combustion. However, its expertise is modeling lifted flames.
However, If you still want using libopensmoke go to its forum in this site.
I may help you there.

Bobi

yash.aesi July 26, 2013 06:40

Thanks bobi for guiding me . one small doubt that i am using openFoam 2.2 so for that should i need to install libopensmoke or can i install directly modified flamelet model 2.2..?

babakflame July 26, 2013 11:03

Hi

libopensomke works with 2.1 and the prior versions. If you want operating with 2.2.x; then you should use Tobi modified version. You can find the links in the libopenSmoke forum.

Bobi

Tobi July 27, 2013 04:27

Quote:

Originally Posted by francesco_capuano (Post 389900)
Dear all,

in the libOpenSMOKE user guide (http://creckmodeling.chem.polimi.it/UserGuide.pdf) the authors talk about a flamelet version of rhoPisoFoam "under testing and validation". To my knowledge, the solver has not been released anymore.

I have successfully tried the steady version, rhoSimpleFoamFlamelets - many thanks to the authors for that - and would like to try the unsteady one.

Do you have any news about that?

Thanks in advance,
Francesco

Hi Francessco,

for your information - i build the PISO foam solver for flamelet (maybe its actual for you)

r08n November 25, 2013 14:12

Quote:

Originally Posted by babakflame (Post 442205)
Hi

You can find the links in the libopenSmoke forum.

Bobi

Is there a dedicated libOpenSmoke forum? I'd be very grateful for a link; I couldn't find it myself.

Tobi November 25, 2013 15:39

yes,.

http://www.cfd-online.com/Forums/ope...opensmoke.html

r08n November 26, 2013 05:50

Quote:

Originally Posted by Tobi (Post 463442)

That's a different thread, and I thought there's an entire forum (possibly, at the creckmodelling/Polimi website). Anyway, thanks :)


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