|January 23, 2014, 09:37||
Convergence Problem using 2. order implicited time discretization
Join Date: May 2013
Posts: 34Rep Power: 5
I'm simulating melting behaviour in a 2D geometry, dominated by natural convection.
I already did a grid dependency study and calculated a time step, which should be small enough.
So far my residuals fulfilled the criteria easily (10-6/10-6/10-6 and 10-10 for energy) with an average of 6 Iterations.
I changed from First order to second order implicid (nothing else!) and now the residuals for continuity stop decreasing at around 10-3 and I have no idea why.
Thanks in advance
|Thread||Thread Starter||Forum||Replies||Last Post|
|How to determine time step size and Max. iterations per time step.||pratik c||FLUENT||40||November 25, 2016 06:33|
|a problem with convergence in buoyantSimpleFoam||skuznet||OpenFOAM Running, Solving & CFD||5||February 19, 2014 05:30|
|Micro Scale Pore, icoFoam||gooya_kabir||OpenFOAM Running, Solving & CFD||2||November 2, 2013 14:58|
|Force can not converge||colopolo||CFX||13||October 4, 2011 22:03|
|Convergence and discretization||karananand||FLUENT||3||August 29, 2010 06:07|