[Bruno Machado]

Hi everyone,

My PhD project involves the simulation of a fuel cell. I built a model using UDF and it works ok. The reason it is ok is that my species concentration gradient of species is very small within the "flow channel/gas diffusion layer/catalyst layer".

I am considering a (compressible) mass-flow-inlet boundary condition where I define the mass flow rate, temperature, mass fraction of species. In the outlet, a pressure-outlet boundary is defined and backflow temperature and species are defined as well. Is this the best boundaries for this case?

Does anyone worked with UDF and reactions? Anyone had the same problem?
Anything that could help me fix this issue are more than welcome.

Thanks all.