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

Convergence Issue

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   May 27, 2020, 06:23
Default Convergence Issue
  #1
Senior Member
 
MA
Join Date: Mar 2020
Posts: 163
Rep Power: 6
mazhar16823 is on a distinguished road
Hi everyone,




I have run a simulation based on 6 M cells mesh. The direction of rotation is such that flow is coming from leading edge to trailing edge of the blade i.e. [0,0,-1]. However, the axis set for the moment coefficient is [0,0,1]. After getting the monitor plot for moment coefficient, I see that it is not converged the first portion of the plot gives high values and other gives lower values. Could you please tell me what could be the reason for this?

P.S: I am using STARCCM+.

Thanks for your time.
Attached Images
File Type: png cmp.png (9.6 KB, 9 views)
File Type: png dor.PNG (60.1 KB, 5 views)
File Type: png cmr.PNG (53.9 KB, 4 views)
mazhar16823 is offline   Reply With Quote

Old   May 29, 2020, 14:52
Default
  #2
Member
 
Vignesh Rajendiran
Join Date: Aug 2016
Location: Chennai, India
Posts: 62
Rep Power: 10
Vignesh2508 is on a distinguished road
Please try to explain your problem in a clear manner. Your question is confusing. Go into specifics for others to identify the problem.
Vignesh2508 is offline   Reply With Quote

Old   May 29, 2020, 15:25
Default
  #3
Senior Member
 
MA
Join Date: Mar 2020
Posts: 163
Rep Power: 6
mazhar16823 is on a distinguished road
Quote:
Originally Posted by Vignesh2508 View Post
Please try to explain your problem in a clear manner. Your question is confusing. Go into specifics for others to identify the problem.

I am simulating the flow around a wind turbine blade. My simulation settings are as follows:
Time-step size: 0.001 s
Number of time-steps: 500
Number of inner iterations: 5

If there is something else you want to know, let me know.
mazhar16823 is offline   Reply With Quote

Reply

Tags
convergence check, moment coefficient

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
Issue with convergence criteria value MMatt FLUENT 3 February 11, 2020 08:05
Convergence issue with moving surface pd.iiest FLUENT 0 August 30, 2019 04:06
Convergence issue with continuity equation Jake FLUENT 8 June 6, 2018 04:41
convergence issue for transonic turbulent case aeroiitkgp SU2 5 May 12, 2015 17:44
Convergence issue Jake FLUENT 3 June 30, 2005 05:12


All times are GMT -4. The time now is 14:03.