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-   -   UDF for VOF interface moving with velocity V (http://www.cfd-online.com/Forums/fluent/41272-udf-vof-interface-moving-velocity-v.html)

Johann June 6, 2006 05:22

UDF for VOF interface moving with velocity V
 
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


shanti June 9, 2006 12:15

Re: UDF for VOF interface moving with velocity V
 
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

Johann June 10, 2006 05:27

Re: UDF for VOF interface moving with velocity V
 
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

Johann June 10, 2006 05:42

Re: UDF for VOF interface moving with velocity V
 
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


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