[mahmohammad]

Hi,

I looked through the user guide and the forum but I couldn't find how.

My problem is two parallel channels where in top one a gas mixture of H2 and O2 is flowing and in the bottom channel oil in flowing.

Fluent doesn't let to have a fluid other than the mixture when choosing species transport model.
What I did was I added the oil as one the mixture species and I put the mass fraction of that as zero for the top channel and I put the mass fraction of the oil as one for the down channel.

This way it works, but when I do that for a simple channel to verify that, the results are different somehow.

Does anybody have any experience or suggestion? I really appreciate...

Mohammad