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Flame temperature too low

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Old   June 2, 2022, 14:31
Question Flame temperature too low
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Luis Porto
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Hello everyone.
I am currently trying to simulate a combustion of methane in a furnace with 4 inlets. Each inlet enters at a flow rate of 0.078 kg/s and the air and ch4 enter simultaniously. The mass fraction of ch4 is 0.33 and the mass fraction of o2 is 0.154 entering at 300K. I am getting the flame formed properly (I think) but the temperature is too low (800K) while I should be getting values close to 2000K. What might be wrong? I have tried to increase the temperature of the inlets but nothing changed. I am using a polynomial function for cp, thermal conducitivity and viscosity. Any help would be aprecciated. I have attached an image of a plane representing two of the inlets and the residuals.
Thank you
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Old   April 11, 2023, 00:45
Default combustion model
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Gopal Pandey
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what combustion modelling approach did you used? EDC, EDM, Premixed, Non-Premixed? And also, which turbulence model did you adopted?
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