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

k and epsilon were hard to converge in multiphase model

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   January 2, 2013, 05:09
Question k and epsilon were hard to converge in multiphase model
  #1
Member
 
Yanlong Li
Join Date: Jan 2013
Location: BeiJing
Posts: 47
Rep Power: 13
Yanlong Li is on a distinguished road
Hi,

My modeling is Injecting gas into Laddle from the bottom. use VOF and k-epsilon models, the time step size is 0.0001s, Residuals were set as 10-5. At the beginning, about 0~0.1s, It was easy to converge. but after that, the k and epsilon became harder and harder to vonverge. I changed mesh, decreased Under-Flaxation-Factor, changed the MultiGrid. But I did not work. Do you have any idea to get through this confusion ?

Thanks in advance

Long
Yanlong Li is offline   Reply With Quote

Reply

Tags
k;epsilon;converge;vof


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
SimpleFoam k and epsilon bounded nedved OpenFOAM Running, Solving & CFD 16 March 4, 2017 09:30
K - epsilon VS SST turbulence model Maicol Main CFD Forum 0 November 30, 2012 17:25
SimpleFoam k and epsilon bounded nedved OpenFOAM Running, Solving & CFD 1 November 25, 2008 21:21
Converge problem of Mixture Model Jen FLUENT 8 August 17, 2005 19:23
Converge problem for multiphase flow Jen FLUENT 4 July 20, 2005 17:52


All times are GMT -4. The time now is 04:48.