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Old   February 2, 2013, 06:20
Default Methane fire
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Please help and advise how to establish a steady fire using methane
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Old   February 3, 2013, 05:20
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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?
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Old   February 3, 2013, 05:34
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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
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Old   February 3, 2013, 05:40
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Is it unsteady?
You can use spark ignition. both reactants, oxidants and products should be avalable at the spark zone.
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Old   February 3, 2013, 06:12
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I use a steady model, with methane at 1000 K to avoid spark. is that correct?
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Old   February 3, 2013, 07:00
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No, You should use a hot spot for initizalization of ignition, like a point with high temperature.
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Old   February 3, 2013, 08:14
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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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