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

Convergence problem?

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   August 22, 2014, 00:48
Exclamation Convergence problem?
  #1
New Member
 
Johann
Join Date: Jun 2014
Posts: 2
Rep Power: 0
jacs_lokoo is on a distinguished road
Hello, this is my first post, i'm actually a new user to ANSYS FLUENT.

I'm in the design process of an airfoil, i did my mesh(ICEM) and the quality tells me i'm over 0.8 in all the mesh.

When i run the FLUENT analysis, it always converges on 0 to 12° AoA, even though i think i'm wrong the AoA vs Cl plots a very nice curve.

I don't really know if that's correct.

I used Trans SST coupled and second order upwind with pseudo transient active. When iterating approximately at 160 to 180 it converges, the residuals also converge.

help pls
jacs_lokoo is offline   Reply With Quote

Old   September 15, 2014, 18:20
Default hi johan
  #2
New Member
 
rahul kumar
Join Date: Jun 2014
Posts: 24
Rep Power: 12
R4RAHUL is on a distinguished road
may be you can decrease your time step-size or select as adaptive instead of fixed and convergence also depends on courant number so you can check that as well
R4RAHUL is offline   Reply With Quote

Reply

Tags
convergence fluent, convergence issues, convergence problem, convergence problems, mesh and grid

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
Centrifugal pump OpenFOAM, convergence problem, ANSA model RDD OpenFOAM Running, Solving & CFD 0 July 5, 2014 10:12
Convergence Problem in Axisymmetric Periodic Flow atheresia FLUENT 3 February 10, 2014 04:00
Force can not converge colopolo CFX 13 October 4, 2011 23:03
convergence problem when use pisoFoam, LES for wind tunnel case Forrest_Lei OpenFOAM 3 July 19, 2011 07:00
Convergence of CFX field in FSI analysis nasdak CFX 2 June 29, 2009 02:17


All times are GMT -4. The time now is 16:35.