[aminhgn]

Hi,

I am trying to simulate air-water flow through a parallel plate. My simulation is 2d. both phases enter through the same side. the length is 2m and the width is 20 mm which, at the first, the water width is 7 mm. there are mass transfer and heat transfer between them. the water temperature is 50 degree and air temperature is 20. the interface between water and air changes.

Firstly, what if I want to change mesh by recognition of the interface, should I use sliding mesh or dynamic mesh and how?

Secondly, for evaporation and condensation, can I use evaporation-condensation of fluent? or because the temperature is lower than the saturation temperature I cannot use this option?

Thank you in advance.

[Ahmed Alkaisi]

Yes you can use evaporation condensation lee model to simulate the mass transfer
I prefer to use 3d however 2d it is simpler and faster
You should use one zone and patch the water region by adapting tool

[aminhgn]

Originally Posted by Ahmed Alkaisi

Yes you can use evaporation condensation lee model to simulate the mass transfer
I prefer to use 3d however 2d it is simpler and faster
You should use one zone and patch the water region by adapting tool

Thank you for your kindly reply. So, In the case of lower saturation of temperature, I can use the lee model?
Do you have any idea about evaporation and condensation factor?