How to simulate mixture model in cooling tower
 

Hi friends, I have some questions about mixture model (euler approach).
I'm mechanical engineering student in last semester. Now, I'm doing my final project. It's about modelling induced draft cooling tower. My model don't use packing/fill, so directly air contact with water droplets.

Actually, I built my project not in 3D but in 2D. So, water droplets spray came from left and right upper side and it fall. Air is entering from bottom side, and directly it contact both of them.

Friends, how to use cfd fluent to model my project. I did some trial error, but it didn't work.

In boundary conditions button what will I do? Can I model heat transfer?
Thanks