 |
 |
 |
|
|
|
[Sponsors] | ||||
January 17, 2014, 00:26
|
Stirred tank convergence issue
|
#1 |
|
New Member
Gurpreet
Join Date: Sep 2013
Posts: 16
Rep Power: 14  |
hi friends
i am simulating a stirred tank using mrf in ansys 14.0 . i am using SIMPLE presure -velocity and first order discretization scheme, once it partially converge then i switch to QUICK..I am able to converge to 10^-3 but i want it to converge till 10^-4. the problem is that all the errors in residuals goes to 10^-4 exept for 'epsilon'.what should i do.plz help 
|
|
|
|
|
|
January 17, 2014, 05:46
|
|
#2 |
|
New Member
Gurpreet
Join Date: Sep 2013
Posts: 16
Rep Power: 14 |
the convergence graph is something like this
 can i say that i converged it to 10^-4 .i did around 9000 iterations |
|
|
|
|
|
|
March 4, 2014, 15:50
|
|
#3 |
|
Member
Join Date: Aug 2013
Location: Bangkok
Posts: 32
Rep Power: 14 |
Try to reduce the relaxation factor for turbulent quantities. I hope it can be help you.
Regards Eakarach |
|
|
|
|
|
|
March 5, 2014, 06:20
|
|
#4 |
|
Senior Member
Rick
Join Date: Oct 2010
Posts: 1,016
Rep Power: 28 |
Hi,
it seems converged to me; try to create some monitor surfaces and monitor some variables such as velocity for example; if that variable doesn't change solution is converged. Daniele |
|
|
|
|
|
 |
| Thread Tools | Search this Thread |
| Display Modes | |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| [ICEM] issue occur after extrude 2D airfoil mesh and convergence problem in CFX | shiyun | ANSYS Meshing & Geometry | 4 | May 9, 2012 20:55 |
| continuity convergence problems in stirred tank | nycera | FLUENT | 5 | February 20, 2011 20:19 |
| Convergence of CFX field in FSI analysis | nasdak | CFX | 2 | June 29, 2009 02:17 |
| CFX-Solver, issue with convergence behavior | Andy | CFX | 7 | September 5, 2006 04:24 |
| Stirred Tank Geometry in Ansys | gopalkasat | CFX | 6 | December 22, 2004 14:32 |
Linear Mode
