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

Convergence problems

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   July 17, 2024, 09:39
Default Convergence problems
  #1
New Member
 
Join Date: Jun 2024
Posts: 5
Rep Power: 2
gub007 is on a distinguished road
Hello Community!

I’m having issues with my simulation converging in certain situations. I am trying to find the drag and lift coefficients at different angles of incidence towards a pentagonal cylinder for my university project. I'm new to Ansy’s fluent and I am self-learning which I must admit is proving quite difficult. For some angles closer to a corner orientation the solution converges (see the figure with the flat line for drag coefficient) well but towards the face orientation the solution does not converge well (see other figure of drag coefficient) and produces a strange discontinuity when the different angles are plotted together (see the figure with polynomial fitting).

I have two questions:

1) How can I get results that fits the polynomial fitting and converges rather than the discontinuity.

2) Is there a way I can automate the process of doing these simulations for different angles?

Thanks in advance, any help would be greatly appreciated!
gub007 is offline   Reply With Quote

Reply

Tags
convergance, fluent - residuals


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
Convergence Problems with turbulence kinetic energy Batou FLUENT 0 May 9, 2015 15:44
having problems with performing grid convergence study in SWFS drdet FloEFD, FloWorks & FloTHERM 12 January 22, 2015 04:44
Vorticity creates convergence problems? IngmarVanDijk FLUENT 6 November 12, 2014 10:50
NACA0012 Convergence Problems StudentAndrew CFX 6 November 21, 2005 06:49
Convergence problems Chetan FLUENT 3 April 15, 2004 19:13


All times are GMT -4. The time now is 20:27.