[zengjia]

I need to simulate an interphase reaction between a liquid and a solid, where the solid is in a fixed region, and the liquid flows through the solid and reacts with the solid to form another liquid. I want to use Euler-granular model to simulate, I take the liquid reactants and liquid products as primary phase, solid reactants and solid products as secondary phase, set up a chemical reaction in the phase reaction. The reaction equation is as follows:
aA(aq)+bB(s)--cC(s)+dD(aq)
But in the solution found that no chemical reaction occurred, that is, the product is 0. May I ask what the reason is?Or is there a better model to simulate this process?