Xu & Froment methane steam reforming UDF
I'm trying to make a UDF about steam reforming using Xu & Froment equation ("Methane Steam Reforming, Methanation and Water-Gas Shift:I.Intrinsic Kinetics")
My problem is unit conversion.
Xu & Froment's rate constant has a unit of (kmol/kg/h).
DEFINE_VR_RATE macro guide said that macro has return value of (kgmol/m^3/sec)
what should i do to make it fit in Fluent format.
1. cell density
2. cell density*(sum of each reaction's reactants mole fraction)
it does not match up with reference value.
anybody who has experience about steam reforming UDF give me some advice,plz.
sorry for late reply, but is there any possibility that you miss the fact that, reaction rate in Xu and Froment is for per kg catalyst rather than per m^3. That means it should be taken as a surface reaction or should be taken into account as porous region. (very thin catalyst thickness which is defined as porous region will do the job.)
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