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

Help with K-epsilon for 2D turbulence modelling

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

Reply
 
LinkBack Thread Tools Display Modes
Old   September 7, 2012, 05:57
Default Help with K-epsilon for 2D turbulence modelling
  #1
New Member
 
Aditya Pandare
Join Date: Aug 2012
Location: Pune, India
Posts: 20
Rep Power: 4
aditya.pandare is on a distinguished road
Hi,
I'm simulating a flow though an volute casing.
I'm in the initial stages of showing grid independence.
the k-epsilon model was working fine until the no. of elements was around 2.5 lakhs.
in the 4 lakh element model im not getting a converged solution.
the residuals for continuity are not stable now.
I'm using the simple algorithm, with 2nd order upwind diff(used 1st order too; but same problem) 0.5 relaxation. its a single-phase flow.

Please suggest ways to converge this solution.
/home/ifmg/Downloads/Screenshot.png
aditya.pandare 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
SimpleFoam k and epsilon bounded nedved OpenFOAM Running, Solving & CFD 13 November 4, 2013 14:13
SimpleFoam k and epsilon bounded nedved OpenFOAM Running, Solving & CFD 1 November 25, 2008 20:21
a book for turbulence modelling Prapanj Main CFD Forum 1 August 21, 2007 05:13
Turbulence Modelling Richard Keays FLUENT 2 May 6, 2004 00:11
Multigrid Method in Turbulence Modelling Bipin Lokhande Main CFD Forum 1 November 11, 1998 19:20


All times are GMT -4. The time now is 22:18.