Convective and evaporative exchange between water and air
 

Hi,
I am trying to model the thermal exchange of a waterfall with the ambiant air.
The waterfall is man made, and the water doesn't really fall through the ai, it overflows from a pool and licks the surface of the stone.
I am trying to model this in Ansys Fluent so I can get realistic equations of the exchange, depending on the water intake temperature, the humidiy, the temperature of the air.
But i am new to Ansys Fluent and I don't know which model will allow me to get these results.

Thanks in advance.

Julian