[hosein67]

Hello every one,
I'am going to do a simulation on Solvent-based thin-film deposition. An initially homogeneous mixture separates into conjugated polymer and a fullerene derivative as the solvent evaporates.
The solvent evaporates into the atmosphere and we assume that it evaporates uniformly from the top surface and film height decreases homogeneously.
I want to use phase field approach by solving Cahn–Hilliard equation to describe the behavior of multicomponent system with various driving forces.
Does any body has such experience in OpenFoam or any advices, references or tutorials which can help me.
Thank you in advance.

Regards,
Hossein

[nero235]

Originally Posted by hosein67

Hello every one,
I'am going to do a simulation on Solvent-based thin-film deposition. An initially homogeneous mixture separates into conjugated polymer and a fullerene derivative as the solvent evaporates.
The solvent evaporates into the atmosphere and we assume that it evaporates uniformly from the top surface and film height decreases homogeneously.
I want to use phase field approach by solving Cahn–Hilliard equation to describe the behavior of multicomponent system with various driving forces.
Does any body has such experience in OpenFoam or any advices, references or tutorials which can help me.
Thank you in advance.

Regards,
Hossein

Hi Hossein,

the Cahn-Hilliard model is currently not implemented in OF. However I am working on a solver to simulate phase separation. As far as I know the only codes available to do that is COMSOL and a finite volume PDE solver based on Python called "fipy". fipy doesn't account for convective transport though. Hope this helps!

Regards, Sebastian.

[hosein67]

Dear Sebastian,
Your suggestion about FiPy help me a lot. I am working on it. Thank you so much for that.

Regards,
Hossein

[vonboett]

well, Dr. Keller at TU Freiberg did a VOF based solver for binary mixture evaporation and break up: http://www.personal.psu.edu/dab143/O...ler_slides.pdf