Hello! My topic is about mixing. First, I simulated the fluid flow to get the u, v and P. Second, I want to use these known properties to slove the concentration equation. Anybody know how to setup my question ? Thanks!!

I am not sure I understand your question.

Try to read the chapter 24.19.2 in Fluent user guide documentation called Step-by-Step Solution Processes. It is help/html/ug/node883.htm

Did it help?

why not to use simple species transport model ?? you dont need to solve for velocity field seperately.

I have considered the simple species transport model. But my topic contained two kinds of fluids. We tried to form the droplet and mixing behavior happened within the droplet. This will decrease the dispersion and enhance mixing. Therefore, I must tried to solve two-phase flow first and solve the concentration eq- second. I hope you can know what I said.

Thanks!!