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Old   February 18, 2003, 11:31
Default Flame distinction
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Hi all,

I am trying to simulate a flame. To ignite the flame I patch a temperature of 2000k to the fuel inlet cells. This initially seems to produce a flame. However after a number of iterations the flame seems to distinguish.

Can anyone suggest a reason for this?


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Old   February 18, 2003, 15:28
Default Re: Flame distinction
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First of all, it is called 'extinction' and 'to extinguish'.

Secondly, try initializing your entire flowfield at a temperature of 1300K or so. If that doesn't work your reaction rates could be too slow.

Alternatively, when using a breakup model you could try making the reactions only mixing controlled, this will get the reaction going irrespective of the laminar reaction rate and thus irrespective of the flame temperature.
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