Phase velocity in VOF model UDF

baechtel · June 15, 2009, 22:25

Hi everybody,

Iam working on drop impact on a solid surface. What I want is to track the contact line velocity from the 2nd phase only during the spreading on the surface.
But I don't understand which variables I need to use to write my UDF.

I know that I have an access to the velocity magnitude for the mixture model but I only need the 2nd phase. Maybe I can substract the first phase velocity from the mixture phase ?

If someone can help me I would really appreciate.
Thanks for help,

Guillaume

niriosrat · April 18, 2016, 20:39

Did you got an answer for that?

hypotalamoos · August 4, 2019, 12:17

hello every body.
did u get the answer??
i am simulating a bubble column by vof and need the bubble velosity and diameter..but not know what to do!

June 15, 2009, 22:25	Phase velocity in VOF model UDF	#1
baechtel New Member baechtelguillaume Join Date: Apr 2009 Posts: 13 Rep Power: 17	Hi everybody, Iam working on drop impact on a solid surface. What I want is to track the contact line velocity from the 2nd phase only during the spreading on the surface. But I don't understand which variables I need to use to write my UDF. I know that I have an access to the velocity magnitude for the mixture model but I only need the 2nd phase. Maybe I can substract the first phase velocity from the mixture phase ? If someone can help me I would really appreciate. Thanks for help, Guillaume

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Extract primary phase thread in VOF with 3 phases	Eric	FLUENT	2	July 7, 2011 03:22
plz rply urgent regrding vof model for my system	garima chaudhary	FLUENT	1	July 20, 2007 09:37
Problem with UDF in VOF model	vijay	FLUENT	0	April 18, 2006 02:06
questions about the discrete phase model	lisa	FLUENT	3	January 17, 2006 08:51
VOF Model?	Adel Ataki	FLUENT	2	November 22, 2000 06:24

April 18, 2016, 20:39		#2
niriosrat New Member Nicolas Join Date: Jun 2009 Posts: 19 Rep Power: 17	Did you got an answer for that?

August 4, 2019, 12:17		#3
hypotalamoos New Member n kh Join Date: Jan 2013 Posts: 7 Rep Power: 13	hello every body. did u get the answer?? i am simulating a bubble column by vof and need the bubble velosity and diameter..but not know what to do!