Two gas species in general mode

[juntao pan]

Dear Glenn,

In our problem, the porous medium (soil) is initially unsaturated (air + water). We then inject CO₂ gas at a specified flow rate from the bottom boundary of the model. As you mentioned earlier, PFLOTRAN cannot model multiple gases. We understand that CO₂ should be introduced as a component in the transport model to flow via diffusion or advection. However, we are unsure how to apply the flow-rate boundary condition for CO₂.

Thank you for your time and support!

Best,

Juntao