CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > OpenFOAM

interTrackFoam for rising bubble

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Display Modes
Old   November 16, 2010, 12:47
Default interTrackFoam for rising bubble
  #1
Member
 
Michiel
Join Date: Oct 2010
Location: Delft, Netherlands
Posts: 97
Rep Power: 6
michielm is on a distinguished road
Hi,
I am working on adapting the hydrofoil tutorial case that comes with the interTrackFoam solver to a gas bubble rising in a stagnant liquid. What I've done until this point is the following:

- created a (2D) mesh with a 'hole' (the bubble) in the middle
- adjusted constant/polyMesh/boundary file to have a left, right, bottom and top and a freeSurface (the interface of the bubble) and of course the frontAndBackPlanes
- adjusted constant/faMesh/faMeshDefinition to have only frontAndBackPlanes attached to the freeSurface (unlike the hydrofoil case my freeSurface is not attached to other boundaries)
- adjusted 0/motionU to have slip on all sides and a fixedValue (000) on freeSurface
- adjusted 0/U to have zeroGradient on all sides and a fixedGradient (000) on freeSurface
- left 0/p as in the hydrofoil case

I can create the faMesh and interTrackFoam starts to run but in the first timestep the curvature gets out of hand and the solver crashes with 'floating point exception'.

Does anyone know what could be the reason for this?


And another question: does interTrackFoam remesh the domain while solving? (which I would say is needed for a rising bubble)

Last edited by michielm; November 16, 2010 at 14:44.
michielm is offline   Reply With Quote

Old   March 5, 2011, 09:09
Default
  #2
Senior Member
 
Gijsbert Wierink
Join Date: Mar 2009
Posts: 383
Rep Power: 9
gwierink is on a distinguished road
Hi Michiel,

Perhaps a bit late, but there is actually a solver for a rising bubble using interTrackFoam. The solver is called bubbleInterTrackFoam and was developed by Zeljko Tukovic during his PhD thesis. I think the basic solver is part of OpenFOAM-1.5-dev and perhaps also of 1.6-ext.
__________________
Regards, Gijs
gwierink is offline   Reply With Quote

Old   March 6, 2011, 11:43
Default
  #3
Member
 
Michiel
Join Date: Oct 2010
Location: Delft, Netherlands
Posts: 97
Rep Power: 6
michielm is on a distinguished road
Hi Gijs,
I've seen the new solver in OF 1.6-ext, but thanks for pointing it out anyway.

The rising bubble was actually just a testcase to try and get to grips with interTrackFoam. Eventually I would be interested in using it for a droplet or bubble in a partially wetting channel, but I think the boundary conditions for that are not yet implemented.

Cheers,

Michiel
michielm is offline   Reply With Quote

Old   March 6, 2011, 13:27
Default
  #4
Senior Member
 
Gijsbert Wierink
Join Date: Mar 2009
Posts: 383
Rep Power: 9
gwierink is on a distinguished road
Hi Michiel,

Ok, well, in that case you might be interested in the work of Sandeep Menon. He used interTrackFoam to model droplet breakup, if I remember right. You can find some info and even some downloadable code on Sandeep's website.
__________________
Regards, Gijs
gwierink is offline   Reply With Quote

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
bubble rising in a column swamysrikanth Main CFD Forum 2 September 27, 2010 08:59
bubble rising problem swamysrikanth ANSYS Meshing & Geometry 2 September 22, 2010 08:00
Separation bubble, hypersonic compression corner ben akih CFX 3 December 10, 2006 17:33
gas hold up in bubble Shelly Main CFD Forum 0 November 13, 2006 01:28
Query on VOF for Bubble rise Vamsi Main CFD Forum 0 December 22, 2005 01:02


All times are GMT -4. The time now is 10:59.