[obsidianop]

I'd like to use the Fluent Species Models to model a gas-solid reaction, where I have one gas flowing into a tube, it reacts with a solid porous bed, and then a new gas flows out.

I was able to get a gas-gas reaction going without much trouble using the methane-air mixture that's built-in. The Fluent documentation implies that that a gas-solid reaction should be possible (see this page), but I'm baffled as to how to actually do it. I can't find any examples online.

I can set up a new mixture with a "selected species" and a "selected solid species", and set up all of the stoichiometry along with what I think is a reasonable arrhenius rate / activiation energy in the "reactions" tab, but when I run the simulation no reaction occurs; if I look at the kinetic reaction rate it's always 0.

Any advice on this, or does anyone know of an example?