Problem: how to ad gas generation in EulerEuler model??

Hi everybody,

I'm developing the model of an alkaline cell for electrolysis of water, thus I need to consider the generation of gas at the electrodes that gives a two-phase flow as a result. I'm currently using the Euler-Euler physics for the fluid flow and Transport of Diluted (is Concentrated better in this case?) Species with electrode-electrolyte b.c. for the reaction. Separately the two physics are working, but I cannot manage to couple them, since the Euler-Euler model does not include any electrode-electrolyte bc, neither mass source/consumption.
Any suggestion?

Thanks a lot!