|March 7, 2012, 06:23||
Diverging Eulerian Multiphase
siamak rahimi ardkapan
Join Date: Jul 2010
Location: Copenhagen, Denmark
Posts: 218Rep Power: 9
I am simulating particles in the air.
The geometry is a room and a candle inside.
When I try steady state, it shows from the beginning floating point.
When I use Unsteady with low relaxation factors, it works to some extent, but whenever I change it to steady state, again it starts to diverge.
Any advice is highly appreciated.
|March 7, 2012, 18:51||
Join Date: Oct 2009
Posts: 637Rep Power: 12
Looks like an Eulerian multiphase simulation, right?
In that case, run it laminar, it's very unstable when running it turbulent.
Another try is to reduce under-relaxation factors to very very very low numbers.
Or even better: Try both at the same time!
I understand that's not satisfying, but unfortunately the Eulerian approach is very unstable under turbulent conditions. There are too much equations affecting each other.
|January 2, 2014, 13:12||
Join Date: May 2011
Posts: 209Rep Power: 7
Did you get the solution with steady state?
I have the same problem.
can you help me!
thanks in advance
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