Hi all Fleunt suers , please can some body help me on the case of moving interface between 2 phases on VOF model , I need to specify the deplacement of the inteface at velocity V (mm/s) using udf .. (the depalcment is perpendicular to this interface)

thanks in advance Johann

Hi Johann

At the interface you will have the volume fraction in the range of 0-1. So you can write a loop and say for those cells have a velocity in the y-direction .

Hope it helps Shanti

Hi Shanti, thanks for your reply , But I still have prblem , what kind of macro should i use to set a velocity to to the interfac cells (0-1 volume fraction ) .Should I use A momentum source (DEFINE_SOURCE) ? please help me thanks Johann

Dear Shanti...please can you email me some example from Fluentusers.com related to that prblem and to the volumetric heat source variation with time .. here is my email adress amine_137@hotmail.fr (unfortunately I dont have login password ) thanks