 |
 |
 |
|
|
|
[Sponsors] | ||||
November 1, 2017, 09:03
|
Spike of residuals after lowering relaxation
|
#1 |
|
New Member
Join Date: Oct 2017
Posts: 26
Rep Power: 8  |
Hi guys,
I am messing around with relaxations factors in a high turbulence combustion simulation(biogas flare). I noticed that when I decrease some of the factors, with 0.05 ~ 0.2, the residuels actually spike. This leaves me really confused. I thought a relaxation factor below 1 just "dampened" the residuel. In other words, it makes the simulation take "smaller steps" towards the solution. So how can it change so violently? I expected a decrease in activity... Hopefully I expressed myself well, not sure how to explain this  Thanks in advance! |
|
|
|
|
|
November 2, 2017, 11:48
|
|
#2 |
|
Super Moderator
Alex
Join Date: Jun 2012
Location: Germany
Posts: 3,399
Rep Power: 46 |
Virtually every change to the solver settings in fluent during a simulation run will produce the results you observed. No need to worry about it.
|
|
|
|
|
|
|
November 3, 2017, 01:11
|
|
#3 | |
|
New Member
Join Date: Oct 2017
Posts: 26
Rep Power: 8 |
Quote:
|
||
|
|
|
||
|
November 3, 2017, 03:50
|
|
#4 |
|
Super Moderator
Alex
Join Date: Jun 2012
Location: Germany
Posts: 3,399
Rep Power: 46 |
Edit: wrong topic
|
|
|
|
|
|
 |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| Lets talk about relaxation factor optimization | chriss85 | OpenFOAM Running, Solving & CFD | 35 | June 21, 2019 09:54 |
| What's happening to my solution for lower relaxation factor | casesam | OpenFOAM Running, Solving & CFD | 3 | October 22, 2015 01:25 |
| motorBike Residuals for SST k-omega... and mine | JR22 | OpenFOAM Running, Solving & CFD | 6 | August 1, 2013 09:08 |
| judging convergence through residuals | MachZero | Main CFD Forum | 7 | December 25, 2012 12:18 |
| rESIDUALS and rElaxation factors | Mohsin | FLUENT | 9 | October 24, 2010 00:22 |
Linear Mode
