Species Mass Flow Contour
 

Hello, how I can get contour plot of mass flow rate of species. I am simulating pemfc, in the channel there are H2 and H20. H2 is consumed and H20 is going through to the membrane, both decrease in the flow field. I want to visulise H2 flow rate. Should I define function or what, I can not find species flow rate options in both cfd post and fluent.

Regards.