CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > Phoenics

2ph-Masstransfer and wallfunction at walls?

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

LinkBack Thread Tools Search this Thread Display Modes
Old   January 2, 2002, 19:29
Default 2ph-Masstransfer and wallfunction at walls?
Joachim Hülstrung
Posts: n/a
Dear all.

I investigate the fluid flow of liquid steel in a tundish. The simulation is a multiphase-problem (IPSA), because undesired particles with a diameter of about 50 microns flotate within the liquid steel (draglaw with CFIPS=Grnd7). The simulation uses the standard turbulence model with standard wall function approach at the walls. This wall function is set for the velocities of the first and the second phase. But now my problem: An additional Groundroutine (selfwritten) describes the masstransfercoefficient only for the second phase (particles) caused by agglomeration at the wall. This is realized with the local turbulent and local velocity variables at this wall. But i ask myself now, whether there is a conflict between on the one side, the wall function, which sets the velocity at the wall to zero, and on the other side, the mass-transport through the wall, which is activated in Q1 by an additional source-term in Group 13 (decribed as P2,Fixflu,Grnd).

Can anyone give me his opinion about this problem or does anyone know a better way to solve masstransfer for the second phase despite the wall function description?

Much regards
  Reply With Quote


Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Use wall function on some walls (not all walls) Mahdi10 FLUENT 1 February 16, 2009 11:52
Multiphase multicomponent masstransfer and heat transfer problem rajeevrkris OpenFOAM Running, Solving & CFD 0 February 6, 2008 03:21
HTC for low Y+ walls Tang FLUENT 0 March 15, 2007 15:55
too many walls?? matze Siemens 2 March 1, 2006 07:13
Velocities and masstransfer Roustam Phoenics 4 February 18, 2002 13:27

All times are GMT -4. The time now is 08:47.