[zaravelar28]

Hi, I am encountering a problem with using the species model in Fluent.
I have a stirred tank reactor where I want to simulate a 2 step reaction (Villermaux-Dushman in my case).
The reactor has 2 inlets and 1 outlet, I am running the simulation in a steady state flow. The stream A contains IO3-, I- and H2BO3- and stream B contains H+, I suppose that the stream properties are the same of that of water and specify the following initial concentrations :
- [H+]=0.04 kmol/m3
-[H2bo3-]=0.0909 kmol/m3
-[I-]=0.0117 kmol/m3
-[IO3-]=0.00233 kmol/m3

The first reaction is a neutralization reaction (instantaneous) : H+ + H2bo3- -> H3bo3
and the second one is : 5I- +IO3- + 6H+ ->3I2 +3H2O
I enable in Fluent the species transport model with finite rate model, but the results I have make no sens since I have at the oultet a molar concentration for [H3BO3] =0.6kmol/m3 far superior than the initial specified concentration of [H+]

Another thing that is weird is that it seems reaction 1 and 2 take place in the inlets but I have separated the reactants so it shouldn't be the case.


Any help would be much appreciated !