|November 24, 2010, 18:48||
k residual goes up after temperature limitation warning???
Join Date: May 2010
Posts: 57Rep Power: 8
I am modelling the combustion of methane-air in a stirling engine burner and after, say, 65 iterations and while all residuals decrease i get the temperature limitation (limited to 1K) warning and once I get it the k residual starts to increase (while all the rest keep going down).
At the moment the warning is restricted to 1 to 3 cells.
What I am using is the species transport with no reactions yet activated and the realizable k-ε turbulence model.
The solution is steady state.
I can tell that solution is at an early stage by a velocity monitor in my outlet which has not yet stabilised.
I understand it might be too early to worry but I think whatever is wrong has started affecting other cells
I am using a very fine tetra mesh with prism layers on the walls.
my bocos are:
mass flow inlet for my air and gas inlets with turbulence specification set to intensity and ratio - default values of 10% for both
outflow for my exhaust
coupled walls for components inside the burner where I must later compute conjugate heat transfer
0 heat flux for all other walls (e. g. the base of the burner)
I am running this huge case on a super computer facility and I am a bit pressed in time so any suggestions would be most appreciated
All the best
|Thread||Thread Starter||Forum||Replies||Last Post|
|transsonic nozzle with rhoSimpleFoam||Unseen||OpenFOAM Running, Solving & CFD||7||April 16, 2014 03:38|
|How to write k and epsilon before the abnormal end||xiuying||OpenFOAM Running, Solving & CFD||8||August 27, 2013 15:33|
|Floating point exception error||Alan||OpenFOAM Running, Solving & CFD||10||April 6, 2012 14:02|
|Differences between serial and parallel runs||carsten||OpenFOAM Bugs||11||September 12, 2008 11:16|
|Unknown error||sivakumar||OpenFOAM Pre-Processing||9||September 9, 2008 12:53|