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-   -   FireFOAM for non confined-flame modelling (http://www.cfd-online.com/Forums/openfoam/77018-firefoam-non-confined-flame-modelling.html)

Cristiano June 10, 2010 09:15

FireFOAM for non confined-flame modelling
 
Hi everyone,

I'm a beginner to use FireFOAM solver. I'd like to investigate a non-confined jet by this solver :D. I've already created my first geometry and grid by blockMesh dictionary file.
I'm trying to understand better the meaning of every file in 0 directory (How I should set the boundary conditions for the case) :confused:. I'd rather understand how I should to set the p (pressure) file before running the solver :confused:, specially for the openSide patch (used to emulate non-confined flame).
I've got the patches as follow:
inlet;
outlet;
symmetryPlane; (Axial-symmetry)
wall;
openSide; (Non-confined jet)
frontAndBack; (2D geometry)

Any suggestions?
Thanks a lot in advance.

Many Regards,

Cristiano :eek:

l_r_mcglashan June 10, 2010 11:40

You could use zeroGradient. See how far you need to put your boundary so as to minimise its effect on your solution.

Do you need to specify velocity as well? That could be slip or fixedValue.

Cristiano June 11, 2010 06:35

FireFOAM for non confined-flame modelling
 
Thank You for your time. I've already taken your advice :).

I'd like to understand better the meaning of every file in 0 directory (e.g. alphaSgs, muSgs, etc.).
Where could I find out few documents about it?

Cristiano
(Researcher at Kingston University, London)

Rickard.Solsjo June 23, 2010 08:04

Hi, I am also looking for the meaning of theses.
Did you find them and if so, where?
Thx
R

Rickard.Solsjo June 23, 2010 08:16

I found this,
http://foam.sourceforge.net/doc/Doxy...a717cf41938160

mentions alphasgs, mut, musgs, alphat etc.

Cristiano June 24, 2010 08:42

fireFOAM boundary conditions
 
Thank You for your help.
I'll have a look at this address.

Cristiano

babakflame May 22, 2013 07:23

Dear Buddies
Hi
I want to use fireFoam for simulating DLR flame (Fuel: CH4-H2-N2 and Oxidizer: air); I think I have set my case in proper state; However, After running my case it seems that the jets are still in cold situation and the combustion did not started :confused::confused::confused:; Would some body please hint me what is the problem? I can upload the necessary files i.e. combustion, chemistry, reaction or anythng else:)

Regards
Bobi


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