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UDF Species source makes my temperature drop... cold fire???

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Old   August 2, 2011, 22:08
Default UDF Species source makes my temperature drop... cold fire???
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John
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Hello all:

I'm simulating a biomass gasifier, and after having lots of convergence problems with the multiphase model, I decided to use source terms to add my pyrolysis and reaction products (CO and CO2) since it's a very simple model. When I turn my species and mass source terms on, the temperature drops. I believe that this is because I am adding mass and changing specific heat and Fluent is solving the energy equation. Does anybody know what the amount of heat I have to add for this is equal to? I am new to this software and I'm not sure how Fluent handles Cps, enthalpies, and the energy equation.

Thanks a lot,

John
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