[Asghari_M]

Hi All CFD Users

As you observe in following sent picture, there is an air stream flow on the upside direction in my problem.

Boundary conditions are: An air inlet stream, a thin inlet falling film water dripped on the wetted cotton fabric. Moreover there are wall boundaries used as air stream channels.

My questions are as follows:

1- How is the interface conditions determine in this atmospheric two component flow containing of the mixture of air and water vapor?

For example, how's the interface temperature determine?

2- Is there any method for the precise solution of mass transfer and other Navier-Stokes equation especially with due to humidifying air?

Main points in this problem is moist conditions and that there's not complex regimes such as bubbly flow or slug flow just like what happens in force boiling flows. Another important point is that interface temperature is unknown unlike the saturation temperature condition in a pure two-phase water flow.
Thanks a lot for any advice and cooperation.
M.Asghari