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

Divergence in AMG solver:pressure coupled but no iterations performed

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 25, 2024, 16:01
Question Divergence in AMG solver:pressure coupled but no iterations performed
  #1
New Member
 
Yash
Join Date: Apr 2024
Posts: 2
Rep Power: 0
Ash117 is on a distinguished road
Hello, I am having issues with my CFD attempt. I am using Ansys Fluent Student edition 2024 R1. I have tried multiple youtube tutorials as well as asking some of my professors but am unable to find a solution to my problem. It gives me the error saying "Divergence detected in AMG solverressure coupled.". I have tried improving my mesh as well as lowering the Under-Relaxation factors to no avail. I am attaching my mesh statistics and the geometry. I am also adding the console logs as a part of this post

It's a 2D axisymmetric simulation with inlet velocity of 50 m/s (although I did attempt 10 m/s too). My mesh metrics are as follows

Max Aspect Ratio: 2.05
Min Element Quality: 0.43896
Max Skewness: 0.55119
Min orthogonal quality: 0.7162



I am under time constraints so any expedited help would be much appreciated. Thank you in advance.
Attached Images
File Type: png image_2024-04-25_195339083.png (16.0 KB, 2 views)
File Type: png image_2024-04-25_195729416.png (21.7 KB, 2 views)
File Type: png image_2024-04-25_195743838.png (10.7 KB, 2 views)
File Type: png image_2024-04-25_195806490.png (19.6 KB, 2 views)
Attached Files
File Type: txt error.txt (2.9 KB, 0 views)
Ash117 is offline   Reply With Quote

Old   April 26, 2024, 11:32
Smile I figured it out
  #2
New Member
 
Yash
Join Date: Apr 2024
Posts: 2
Rep Power: 0
Ash117 is on a distinguished road
All I had to do was rotate my model 90 degrees so that the axis aligned with the x-axis in ansys. Found it out by troubleshooting and experimenting with a different geometry. Hope this helps for anyone else who has this problem in the future.
Ash117 is offline   Reply With Quote

Reply

Tags
axisymmetric 2d fluent, error #f, help for a newbie, help me


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
Error SIGSEGV using VOF and UDF JERC_UTFSM Fluent UDF and Scheme Programming 14 November 8, 2021 00:17
laplacianFoam with source term Herwig OpenFOAM Running, Solving & CFD 17 November 19, 2019 14:47
Segmentation fault when using reactingFOAM for Fluids Tommy Floessner OpenFOAM Running, Solving & CFD 4 April 22, 2018 13:30
fluent divergence for no reason sufjanst FLUENT 2 March 23, 2016 17:08
pimpleFoam: turbulence->correct(); is not executed when using residualControl hfs OpenFOAM Running, Solving & CFD 3 October 29, 2013 09:35


All times are GMT -4. The time now is 14:51.