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

problem about VOF and species couple

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

Reply
 
LinkBack Thread Tools Display Modes
Old   June 15, 2012, 01:23
Default problem about VOF and species couple
  #1
New Member
 
Cloud Zhang
Join Date: Dec 2010
Posts: 7
Rep Power: 6
Cloud is on a distinguished road
I seted up a case to solve the condensation and evaporation in air. I used VOF and species model together. But when I iterated unsteady for some time step, there was always a error. It was

> "# Divergence detected in AMG solver: gas-species-1 -> Increasing
> relaxation sweeps!
>
> Error: Divergence detected in AMG solver: gas-species-1
>
> Error: Divergence detected in AMG solver: gas-species-1
> Error Object: #f"
>
>


I studied the error for a long time and found when VOF and species coupled, this error will exist even there was not mass transfer. I thought when the cell VOF of liquid decrease from 1.0, the mass fraction of species would cause error. Beacuse when the cell VOF equal to 1.0, the mass fraction of species all eaqual to 0.0 in this cell in fluent. And when this cell's VOF is decreased, the mass fraction of species all increased from 0.0 and perhase this will cause error.

Did someone use VOF and species model together? And did you meet this error? And how to solve this problem?
Pleeeeeeeeeeeeeeeeeeese help me! Thank you!
Cloud 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
vof with species transport bene FLUENT 0 June 27, 2011 05:33
Case (VOF + Solidification&Melting) will not work with Species Transport? ERROR ? andy.eco FLUENT 4 September 14, 2010 17:27
VOF & species Asghari_M Main CFD Forum 3 February 17, 2010 13:32
dissolved Species equation and VOF santhanuj Main CFD Forum 0 April 8, 2009 16:12
Species equation with VOF santhanuj STAR-CD 0 April 8, 2009 16:09


All times are GMT -4. The time now is 15:53.