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Bido14 February 2, 2013 06:20

Methane fire
Please help and advise how to establish a steady fire using methane

msaeedsadeghi February 3, 2013 05:20

You can use non-premixed combustion or eddy-dissipation models. In non-premixed mode you should first make a PDF table.

At first you should define if it is a non-premixed flame?

Bido14 February 3, 2013 05:34

I think it is not a non premixed.
It is a pipe of methane in the atmosphere.
I have previously used the finite rate/eddy dissipation but couldn't ignite it

msaeedsadeghi February 3, 2013 05:40

Is it unsteady?
You can use spark ignition. both reactants, oxidants and products should be avalable at the spark zone.

Bido14 February 3, 2013 06:12

I use a steady model, with methane at 1000 K to avoid spark. is that correct?

msaeedsadeghi February 3, 2013 07:00

No, You should use a hot spot for initizalization of ignition, like a point with high temperature.

Bido14 February 3, 2013 08:14

Can you please clarify what is a hot spot, and how can i make it?
In the case of using it, shall the methane be entered at room temperature and then pass by it to ignite?

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