CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > FLOW-3D

3D bubble model

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

Reply
 
LinkBack Thread Tools Display Modes
Old   March 27, 2009, 18:25
Default 3D bubble model
  #1
New Member
 
Join Date: Mar 2009
Posts: 9
Rep Power: 8
ekh95 is on a distinguished road
I am working on creating a thermal bubble to simulate an inkjet. So far, 2D model worked OK. However, I couldn't generate a bubble for 3D models. Is Flow3D capable for this purpose? All examples I have are axisymmetric 2D cases. Is there any tip about this?

E.
ekh95 is offline   Reply With Quote

Old   March 28, 2009, 01:28
Default
  #2
H.C
Member
 
Join Date: Mar 2009
Posts: 40
Rep Power: 8
H.C is on a distinguished road
what did u mean by u couldn't get a 3d thermal bubble?
H.C is offline   Reply With Quote

Old   March 31, 2009, 20:56
Default
  #3
New Member
 
Join Date: Mar 2009
Posts: 9
Rep Power: 8
ekh95 is on a distinguished road
Now, I can model a thermal bubble in 3 D structures. For a bubble jet, I am still curious about what are the proper boundary conditions for the interface between the nozzle mesh and the bottom of the mesh (symmetry ??) which defines a drop path and the drop exit of the mesh (pressure or continuity)?

E.
ekh95 is offline   Reply With Quote

Old   April 1, 2009, 11:32
Default
  #4
Member
 
MC
Join Date: Mar 2009
Posts: 56
Rep Power: 8
melissa is on a distinguished road
If there is going to be no affects to the flow from the boundary then symmetry would be fine along the path and I would suggest using a pressure for the exit since it is more realistic.
melissa is offline   Reply With Quote

Old   April 29, 2009, 19:09
Default accommodation coefficient
  #5
New Member
 
Join Date: Mar 2009
Posts: 9
Rep Power: 8
ekh95 is on a distinguished road
In the bubble model, there is an accommodation coefficient. How can I get it for water vapor on wafer surface? Two models which I saw used 0.05 for this. Is it typical?


E.
ekh95 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
Superlinear speedup in OpenFOAM 13 msrinath80 OpenFOAM Running, Solving & CFD 18 March 3, 2015 06:36
Bubble Number density model CFDUSERIN CFX 1 November 9, 2011 10:50
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
algebraic slip model with stirred suspension? Manuel Krause CFX 0 April 15, 2005 09:10


All times are GMT -4. The time now is 20:13.