VOF-locating the surface??

November 10, 2003, 12:12

Hi!

I'm modeling a multiphase flow inside a thank (air/water)using laminaer and unsteady flow, dynmesh and the VOF model.

Does anyone know how I can locate the surface in general or close to the wall? I know that the volume fraction for each phase is availabele, but can't find it... any surgestions??

Thanks!

Kristine

November 11, 2003, 02:59

Hi!

Im not shure if that is what you want...To set the initial shape of water in the tank you have to go to Adapt-Region Adaption and Mark the region where you want the certain wolume fraction. Than go to Solve-Initialize-patch and set the desired volume fraction. The problem is that you can only determine shapes like lines, and circles in region adaption. This is also explained in VoF tutorial...

I hope i answered your question

Regards

MATEUS

November 11, 2003, 10:02

Hi, I am assuling you want to follow the free interface air-water during after calculation using fluent (= height, or other parameter ... ). What I could suggest is to set an iso-surface at volume fraction in water or air = to 0.5. That is gonna help you to locate the free surface (= interface water-air). hope this help thomas

November 10, 2003, 12:12	VOF-locating the surface??	#1
Kristine Guest Posts: n/a	Hi! I'm modeling a multiphase flow inside a thank (air/water)using laminaer and unsteady flow, dynmesh and the VOF model. Does anyone know how I can locate the surface in general or close to the wall? I know that the volume fraction for each phase is availabele, but can't find it... any surgestions?? Thanks! Kristine

November 11, 2003, 02:59	Re: VOF-locating the surface??	#2
mateus Guest Posts: n/a	Hi! Im not shure if that is what you want...To set the initial shape of water in the tank you have to go to Adapt-Region Adaption and Mark the region where you want the certain wolume fraction. Than go to Solve-Initialize-patch and set the desired volume fraction. The problem is that you can only determine shapes like lines, and circles in region adaption. This is also explained in VoF tutorial... I hope i answered your question Regards MATEUS

November 11, 2003, 10:02	Re: VOF-locating the surface??	#3
thomas Guest Posts: n/a	Hi, I am assuling you want to follow the free interface air-water during after calculation using fluent (= height, or other parameter ... ). What I could suggest is to set an iso-surface at volume fraction in water or air = to 0.5. That is gonna help you to locate the free surface (= interface water-air). hope this help thomas

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
VOF & Variable Surface Tension in FLUENT	SeamusTCD	FLUENT	13	June 18, 2022 01:51
surface monitors in VOF	prashanthreddyh	FLUENT	2	September 29, 2010 12:07
VOF and Free surface model...are they same?	Kushagra	CFX	1	November 14, 2008 12:36
How to monitor the surface height of fluid in VOF	davidyin	FLUENT	0	September 1, 2008 04:14
Surface tension in VOF	chapelle	FLUENT	0	October 31, 2005 02:27