[ehecboy]

I am simulating the transient heat transfer due to condensation effects by applying the lee model.



I am considering two phases with the eulerian approach: steam and liquid water


When the "wall adhesion" model is activated the mass of the liquid increases exponentially after a certain time--> leading to absolut wrong mass in the system.


When it is deactivated everything looks fine, no unrealistic results. But less condensate adhere to the surfaces.


Has anyone experinced something similar? I am using the CSS surface tension model. Decreasing the time step size (0.01 ->0.005 s) helped just for a few hundret time steps.


This problem occured only with a finer BL resolution. So refining it further would not help I guess. The problem with a rougher resolution is the underprediction of the adhesion forces