post processing unsteady species transport

solomon

I am simulating non-reacting species transport in unsteady flow. I can only get an x-y plot of the velocity fields not the species concentration. While fluent is doing each iteration I see on the window besides the velocity components non-zero species concentration. But in the post processing stage the x-y plot of the species is zero in all regions; it sounds I am not able to display them.

I did a similar study for steady flow never had such problems.

Solomon