Dear all, I have compiled t
 

Dear all,

I have compiled the sources of 1.5-dev (snapshot 2009-02-02 from powerlab) using the system gcc-compiler (ver. 4.2.1) on my openSuSE 10.3 (64-bit). Compilation gave no errors and foamInstalationTest also says that all is OK. Now, when I run the damBreakWithObstacle tutorial with interDyMFoam, the calculation starts, but I obtain the following error:

Starting time loop

Courant Number mean: 0 max: 0 velocity magnitude: 0
deltaT = 0.00117647
Time = 0.00217647

Selected 192 cells for refinement out of 32256.
Refined from 32256 to 33600 cells.
Selected 0 split points out of a possible 192.
Execution time for mesh.update() = 0.19 s
time step continuity errors : sum local = 1.83574, global = 0, cumulative = 0

keyword agglomerator is undefined in dictionary ""

file: from line 0 to line 0.

From function dictionary::lookupEntry(const word& keyword) const
in file db/dictionary/dictionary.C at line 213.

FOAM exiting

I have the recompiled the application interDyMFoam with gcc-4.3.1, but I again get the same error.

Does this mean that the fvSolution dictionary cannot be read? Can anybody help on this?

Best Regards,
Edin.

Hi Edin, I got the same pro
 

Hi Edin,

I got the same problem. The solution is to change in system/fvSolution:

preconditioner GAMG
{
...

to

preconditioner
{
type GAMG;
...

Best regards, Hannes

Thanks Hannes. I have alrea
 

Thanks Hannes.

I have already done that. I have also changed the
dynamicMeshDict as follows:

lowerRefineLevel 0.01;
upperRefineLevel 0.99;
maxRefinement 3;
maxCells 5000000;

But now the calculation starts and it crashes after several time steps on floating point exception. Did you have same experiences?

Best regards,
Edin.

dynamicRefineMeshDict
 

Hello everybody
We are used OpenFOAM1.5.1 with suse11, 64bits, and tried to refinement our mesh, we are used dynamicRefineMeshDict and didn`t understand some parameter like:

// All points are candidates for unrefining
unrefineLevel 10;
nBufferLayers 1;

// Maximum refinement level (starts from 0)
maxRefinement 2;

// Maximum cell limit (approximate)
maxCells 50000;

(default values in interDyMFoam)
we are change it´s, and noticed some different respect to default values, eg, maxRefinement 10; maxCells 500000 but when we changes
unrefineLevel ;
nBufferLayers
we didn`t see any difference in refinement mesh.

Somebody could to explained us what`s it means this parameters?
we are appreciate any comments.
Sonia and Ana

Hi!

As I got mad, trying to refine the mesh, I started searching the web for a solution. Unfortunatelly I couldn't find any.

At least some of you got the same problem as I did.

I also have the same problem as Edin. My mesh is refining, but afterwards it ends with a floating point exception.

Sometimes it works for a few iterations if the changes are not very big (only 10-40 cells) but if it is 100 cells in total or more: goodbye. :-(

Btw, I wouldn't suggest to use GAMG to solve anything, because there is that agglomerator problem, which always hangs up on my mesh (due to some unequal field sizes). PCG got a better result.
Not it is "only" the floating point error.

So does anyone have any experience with that problem?

Btw: I changed the interDyMFoam solver to be able to calculate multiphases (copied from the multiphaseInterFoam solver); maybe the problem is in the incompatibility?

GAMG error messages
 

Dear Foamers,

I am trying to test the GAMG presconditioner in OF1.5 for my pressure and continue to get Istream errors. Does anyone know how to resolve this :confused:. No problems with DIC preconditioner, and planning to work in 3D and believe this to significantly reduce computation time.

Thanks for any insight or advice, Lori Holmes

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Create time

Create mesh for time = 0

Reading field p

Reading field U

Reading/calculating face flux field phi

Selecting viscoelastic model multiMode
Selecting viscoelastic model Giesekus

Starting time loop

Courant Number mean: 0 max: 7.39649e-05
deltaT = 1.19999e-05
Time = 1.19999e-05

DILUPBiCG: Solving for Ux, Initial residual = 1, Final residual = 7.816e-11, No Iterations 2
DILUPBiCG: Solving for Uy, Initial residual = 0, Final residual = 0, No Iterations 0


Istream not OK for reading dictionary

file: /home/pec/Desktop/solving_cases/giesekus_orig_GAMG/system/fvSolution::p::preconditioner at line 30.

From function dictionary::read(Istream&, const word&)
in file db/dictionary/dictionaryIO.C at line 37.

FOAM exiting

still persistent in foam-extend-4.0
 

Hi everone!


this problem seems to be persistent in foam-extend-4.0 still.
Has anyone found a solution?


Best regards,
ma-tri-x