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-   -   fire simulation (http://www.cfd-online.com/Forums/fluent/65328-fire-simulation.html)

preibie June 11, 2009 11:32

fire simulation
 
Hallo,

I want to simulate a fire in a room. For that i want to use fluent 12. I have some questions because this is my first fire simulation and i don't have any experience topic.

I want to model the fire as a volume with two source terms. First energy and second the smoke. For the radiation i want to use the DO model. That is i think OK.

But have anybody some experiences about the solver settings? Is there somebody how can help me and have a setup example?

Thanks for helping me!

Preibie

preibie June 12, 2009 09:36

fire simulation
 
I want to concertize: my apprehension is that the the calculation is not convergent because of the high energy source (10 MW in 45 m). Have anybody calculate a test case withe high energy load? :confused:

I used in a small test case: RANS, pressure based, k-epsilon realizable, Discretization all second order, Least Squares Cell-Based, Interpolation Body Force Weighted, Pressure-Velocity Coupling PISO

and the residuals of the continuity only sink to 10^-2!!:mad:

preibie June 16, 2009 10:10

solution found
 
hallo,

nobody helped me, so I must help myself. I found a paper where somebody simulate a fire in a tunnel. This is a good example for setting up a fire simulation. If somebody is interested ask me!

jorbenfer June 21, 2009 21:47

Quote:

Originally Posted by preibie (Post 219483)
hallo,

nobody helped me, so I must help myself. I found a paper where somebody simulate a fire in a tunnel. This is a good example for setting up a fire simulation. If somebody is interested ask me!


Hi there:

I'm also trying to simulate a fire front, such as a bushfire. I'm a bit stack on how to define the problem in terms of boundary conditions. Can you please post the reference to that paper you found?
Thanks!

preibie June 22, 2009 05:22

Quote:

Originally Posted by jorbenfer (Post 220000)
Hi there:

I'm also trying to simulate a fire front, such as a bushfire. I'm a bit stack on how to define the problem in terms of boundary conditions. Can you please post the reference to that paper you found?
Thanks!

http://www.svbf.se/A1_Omoss/Bilder/B...t1_404_011.pdf

jorbenfer June 22, 2009 20:31

Quote:

Originally Posted by preibie (Post 220031)

Thank's mate, really good paper!

mesumon203 May 29, 2010 05:37

Hello frnds,

I am trying to do the same thing but i cannot open the link because it is showing that nothing is here. so please can you help me how to find out the paper. or can you please send it to mesumon203@yahoo.com


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