[GreatDee]

Hi everyone

I am a newbie in STAR-CCM+. I would like to ask if it is possible to simulate multiphase (gas-liquid-solid-ions) reactions using VoF model. The example of such set of reactions (as it occurs in wet FGD systems) is:

(i) SO2(g) <=> SO2(aq)

(ii) SO2(aq) + H2O <=> H2SO3

(iii) H2SO3 <=> H+ + HSO3-

(iv) HSO3- <=> H+ + SO32-

(v) CaCO3(s) <=> CaCO3(aq)

(vi) CaCO3(aq) <=> Ca2+ + CO32-

(vii) H+ + CO32- <=> HCO3-

(viii) H+ + HCO3- <=> CO2(aq) + H2O

(ix) Ca2+ + SO32- <=> CaSO3(s)



My objective is to use STAR-CCM+ to determine the mole fractions (for every time-step) of SO2(aq), H+, HSO3-, SO32-, Ca2+, HCO3-, CO32-, CO2(aq) and CaSO3(s). When SO2(g) is absorbed into limestone slurry, the above-listed reactions are considered to take place.


Kind Regards

GD

[marmot]

I think they are working on a multi-component multi-phase ability but perhaps for now you select multi-phase VOF and within one of your phases you introduce passive scalars, create your source terms between passive scalars,

Problems may arise at the interface, its possible there is nothing to prevent your passive scalar from appearing in the gas phase, or you try to do a sink/source term for interface cells but its not trivial