|July 1, 2013, 08:57||
Solution changing with dt.
Join Date: Jun 2010
Posts: 20Rep Power: 8
I have a code in cylindrical coordinates that uses central differences. My problem is this: when I change the time step size, keeping everything else the same(grid included), I get vastly differing solutions.
Been breaking my head over this - any ideas??
Thanks in advance!
|July 2, 2013, 05:09||
Filippo Maria Denaro
Join Date: Jul 2010
Posts: 2,510Rep Power: 31
I think that the discussion of your problem must be better focused:
- what variable you see that strongly change with dt?
- what about the cell Re number? are you sure to fulfill the stability constraint?
- have you experienced the same behavior for refined h steps?
|Thread||Thread Starter||Forum||Replies||Last Post|
|Integrated conjugate heat transfer solver in OpenFOAM||hjasak||OpenFOAM Running, Solving & CFD||170||March 2, 2016 05:20|
|Asymmetrical solution using RANS||Marli||FLUENT||2||January 9, 2015 10:26|
|IcoFoam parallel woes||msrinath80||OpenFOAM Running, Solving & CFD||9||July 22, 2007 02:58|
|Mesh independent solution||CFX Begineer||CFX||0||October 27, 2002 11:54|
|Discussion about Mesh independant solution||Seb||Main CFD Forum||13||May 22, 2001 13:37|