CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

Problems with bouyancy in multiphase simulation

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 14, 2016, 06:13
Default Problems with bouyancy in multiphase simulation
  #1
New Member
 
Tom Bale
Join Date: Feb 2016
Posts: 2
Rep Power: 0
tb465 is on a distinguished road
I'm having problems with my solutions, I have used snappyHexMesh to mesh to my shape within a multiphase (air and water) tanks, the shape should be positively buoyant but there doesn't appear to be any buoyancy force whatsoever.

I have reduced the mass of the object in dynamicMehsDict to test whether this makes any difference and it doesn't. I have also been comparing my settings with those in the floating object tutorial and I can see no great differences, the major difference is that I'm using snappyHexMesh and the tutorial defines the shape of the block within setFieldsDict.

Does anyone have an understanding of how the object's buoyancy is calculated? Is it within dynamicMeshDict? Could there be a problem with the volume output of snappyHexMesh?

I'm not attaching all of the scripts now, but if you think you can help and you need to see any of my set-up just say so and I'll upload whatever scripts you suggest.

Thanks!!!
tb465 is offline   Reply With Quote

Reply


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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Problems starting a fluid-particle interaction simulation Richard Beauchamp Fidelity CFD 5 January 26, 2015 10:44
Multiphase flow - simulation crashing yschati CFX 14 November 16, 2010 17:29
Mass conservation problem in mixing tank multiphase simulation rockewan FLUENT 0 April 6, 2010 12:34
Multiphase Simulation dungsidietquy FLUENT 4 November 4, 2009 13:46
Problems on H2/air CFX simulation xulixian OpenFOAM Running, Solving & CFD 2 April 14, 2009 15:00


All times are GMT -4. The time now is 18:29.