Hi...

I want to solve the evaporation of the water in the box. There is a heat source the wall and topper wall is opened.

Is it right that define_exchacge_property as the udf function to deal with the evaporation problem is used?

If it isnt, could you tell me about the correct udf?

Help me..

thanks

I also encounter this case. Maybe you can add a mass source on the wall or define a mass flux on the wall. you can have a try. Good luck!