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Search: Posts Made By: nimasam
Forum: OpenFOAM Running, Solving & CFD October 8, 2013, 15:10
Replies: 26
Views: 2,724
Posted By nimasam
then try inletOutlet

then try inletOutlet
Forum: OpenFOAM Running, Solving & CFD October 8, 2013, 15:03
Replies: 26
Views: 2,724
Posted By nimasam
it seems fine, just try for sides wall, slip BC

it seems fine, just try for sides wall, slip BC
Forum: OpenFOAM Running, Solving & CFD October 8, 2013, 13:36
Replies: 26
Views: 2,724
Posted By nimasam
izna look log file: your numerical solution...

izna look log file:

your numerical solution is diverging!
you should monitor courant number, continuity and other variables residual!


i recommend:
1- check your BC
2- off your turbulence...
Forum: OpenFOAM Running, Solving & CFD October 8, 2013, 07:20
Replies: 26
Views: 2,724
Posted By nimasam
did you check your mesh witch checkMesh command? ...

did you check your mesh witch checkMesh command?
your fvSolution setup is OK, but as you use an steady-state solver, you may want to use relaxation to converge easier
Forum: OpenFOAM Running, Solving & CFD October 6, 2013, 05:28
Replies: 26
Views: 2,724
Posted By nimasam
it seems some thing is wrong in solving Matrix...

it seems some thing is wrong in solving Matrix :), i guess you need check your mesh, because PCG is almost stable solver :), maybe change your preconditioner
Forum: OpenFOAM Running, Solving & CFD October 4, 2013, 02:28
Replies: 26
Views: 2,724
Posted By nimasam
nope, it returns to new OpenFOAM file Dict called...

nope, it returns to new OpenFOAM file Dict called fvOptions in system directory,
it seems OpenFOAM group are going to integrate some solvers options such as MRF zone or porous media, in one dict...
Forum: OpenFOAM Running, Solving & CFD October 2, 2013, 14:14
Replies: 26
Views: 2,724
Posted By nimasam
nope, it was not about convergence issue, i feel...

nope, it was not about convergence issue, i feel it's a bug in GAMG solver, i saw it before in some cases, so i suggested you to change your schemes
Forum: OpenFOAM Running, Solving & CFD October 1, 2013, 13:47
Replies: 26
Views: 2,724
Posted By nimasam
well izna first look at your continuity :) ...

well izna
first look at your continuity :)

it should be decreasing
However there are several ways to understand whether it converges or not.
for example your residual should be decreasing or...
Forum: OpenFOAM Running, Solving & CFD October 1, 2013, 11:44
Replies: 26
Views: 2,724
Posted By nimasam
your numerical solution diverges, you may want to...

your numerical solution diverges, you may want to check
1) your BCs
2) your fvSchemes
3) or using higher under relaxation

Best Regards
Forum: OpenFOAM Running, Solving & CFD October 1, 2013, 09:25
Replies: 26
Views: 2,724
Posted By nimasam
for example PCG

for example PCG
Forum: OpenFOAM Running, Solving & CFD October 1, 2013, 09:05
Replies: 26
Views: 2,724
Posted By nimasam
change your fvSolution solver from GMAG to...

change your fvSolution solver from GMAG to another some thing else ;)
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