CFD Online URL
[Sponsors]
Home > Forums > Main CFD Forum

Semi-implicit scheme for VOF

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

Reply
 
LinkBack Thread Tools Display Modes
Old   February 9, 2012, 23:15
Default Semi-implicit scheme for VOF
  #1
New Member
 
Join Date: Mar 2009
Posts: 6
Rep Power: 7
phoenixchen903 is on a distinguished road
Hi, every one,

I'm working on vof. In some papers, semi-implicit scheme (Crank-Nicolson scheme) was applied for temporal evolution, like in HRIC-related paper or FLUENT.

Are there anybody have experientces on it - How can I estimate the VOF flux on the cell surface at time level "n+1"?

Thank you very much.
phoenixchen903 is offline   Reply With Quote

Old   February 11, 2012, 12:48
Default
  #2
Member
 
Join Date: Jul 2011
Posts: 59
Rep Power: 5
rmh26 is on a distinguished road
You could try to get a predicted VOF field at n+1 using and Adams Bashforth method. I do similar work and for now have just been using the current VOF for the n+1 VOF when solving the NS equations in the semi implicit (Adams Bashforth-Crank Nicholsen) form.
The prediction part can be iffy near the interface though if you are experiencing spurious currents.
rmh26 is offline   Reply With Quote

Old   February 11, 2012, 22:18
Default
  #3
New Member
 
Join Date: Mar 2009
Posts: 6
Rep Power: 7
phoenixchen903 is on a distinguished road
Thanks a lot! I'll study it.

Quote:
Originally Posted by rmh26 View Post
You could try to get a predicted VOF field at n+1 using and Adams Bashforth method. I do similar work and for now have just been using the current VOF for the n+1 VOF when solving the NS equations in the semi implicit (Adams Bashforth-Crank Nicholsen) form.
The prediction part can be iffy near the interface though if you are experiencing spurious currents.
phoenixchen903 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
2D Implicit HLLC scheme harish_0689@ Main CFD Forum 2 January 21, 2012 14:22
Is it feasible to apply implicit scheme in LES EagleGao Main CFD Forum 2 October 24, 2011 15:04
time_step, implicit scheme, number of iterations Isa Main CFD Forum 3 May 11, 2006 13:27
Komogrov time scale and implicit scheme for LES Li Yang Main CFD Forum 1 January 17, 2004 02:13
How to choose the CFL number with implicit scheme? D.T. Main CFD Forum 2 October 23, 2002 14:56


All times are GMT -4. The time now is 10:22.