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

Vapour bubble integrity

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

Reply
 
LinkBack Thread Tools Display Modes
Old   November 18, 2004, 16:30
Default Vapour bubble integrity
  #1
Matjaz Kariz
Guest
 
Posts: n/a
Hello! Recently I have been doing some simulation on bubble climb from the bottom of the boiling pool to the surface. I have described the bubble initial shape and volume using concentration expressions (described the location shape and volume of vapour phase with step function). I use transient type of simulation so I can evaluate the bubble rise at different timesteps. A problem occured right after the first step. The bubble tends to dissolve in water phase. In Physics/ Fluid list I have selected both phases and set Bouyant Domain model/Fluid models/ I have set homogeneous standard model, Water and vapour tested both dispersed and continuous fluid, Fluid pairs set the surface tension coefficient and surface tension model...

At the beginning the bubble is seen, but after the first step... How can I achieve to keep the bubble in one piece from the bottom to the surface? Any suggestions?

Matjaz Kariz

  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
Water subcooled boiling Attesz CFX 7 January 5, 2013 04:32
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
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 19:34.