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Bunsen Burner with GRI mechanism

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Old   May 17, 2016, 12:19
Default Bunsen Burner with GRI mechanism
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iam
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Hi all,

I am trying to simulate a Bunsen Burner with the GRI mechanism for methane. I have started doing the simulation with the methane-air 2step model from fluent and I obtain a good convergence. However, when switching to the GRi mechanism (without changing any boundary condition), the flame deattaches from the fuel entrance.

Could someone please help me understand why this happens?

Thanks a lot
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