|
[Sponsors] |
September 19, 2005, 07:44 |
AMG Solver
|
#1 |
Guest
Posts: n/a
|
I am studying on a 3D jet in crossflow. after some iteration I have got the "Divergence detected in AMG Solver:TEMPERATURE" and then the iteration stop.
Do you know why it could be? |
|
September 19, 2005, 08:59 |
Re: AMG Solver
|
#2 |
Guest
Posts: n/a
|
Try reducing the under relaxation factor for energy in the solution control panel and run the iteration.
|
|
September 19, 2005, 14:01 |
Re: AMG Solver
|
#3 |
Guest
Posts: n/a
|
AMG solver divergence is detected due to the following reasons:
1.> If u are making use of UDM's in UDF and not allocated memory for the problem setup then u will land up with this error message 2.> Due to the underelaxation parameter beign too stringent as some one earlier pointed out 3.>It also comes up if u have closure terms not properly formulated. what momentum interaction terms are you using? I hope this atleat provides some info. to start with. |
|
September 21, 2005, 02:43 |
Re: AMG Solver
|
#4 |
Guest
Posts: n/a
|
hi aother reason for AMG is for high Dense messing and also increase the temperature limits in define operating condition
|
|
September 22, 2005, 03:17 |
Re: AMG Solver
|
#5 |
Guest
Posts: n/a
|
Dear Hari, Podila and Manoj Kumar thank you very much for sharing your opinion and guidence..
|
|
October 1, 2005, 11:13 |
AMG Solver
|
#6 |
Guest
Posts: n/a
|
Hello all,
I am working on 3D, ROTATING/ SWIRL flow inside the pipe problem. Flow is compressible and turbulent. I started with Segregated and Implicit solver with under-relaxation factor for energy equation equal to 1. I am using RSM as a turbulence model. But after some iteration I have got the "Divergence detected in AMG Solver:TEMPERATURE" and then the iteration stop. Please help. Thanks in advance, best wishes, Sachin Nimbalkar |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Fluent IcePak - AMG Solver | Russ | FLUENT | 2 | December 31, 2018 09:57 |
Working directory via command line | Luiz | CFX | 4 | March 6, 2011 20:02 |
Divergence detected in AMG solver: pressure correction | jimmer | FLUENT | 2 | August 7, 2010 06:47 |
reverse flow and divergence in AMG solver | MASOUD | FLUENT | 2 | April 2, 2010 08:48 |
AMG versus ICCG | msrinath80 | OpenFOAM Running, Solving & CFD | 2 | November 7, 2006 15:15 |