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-   -   pimpleDyMFoam - GGI - dynamicMeshDict (http://www.cfd-online.com/Forums/openfoam-pre-processing/116953-pimpledymfoam-ggi-dynamicmeshdict.html)

dogan April 29, 2013 09:23

pimpleDyMFoam - GGI - dynamicMeshDict
 
Hi everyone,
I am working on a centrifugal pump simulation. I already managed to run it with MRFSimpleFoam (steady state), and now i need to run it transient. In the pump mesh, i have the rotating part (rotor) impeller, and the stationary part(stator) spiral and the ggi faces between rotor and stator.
I took a look at the propeller tutorial, and tried to implement the necessary changes in the pump, but i am getting an floating point exception. I took the first time step from my steady state solution. The error message is as followed:

Time = 1.0000023


From function void GGIInterpolation<MasterPatch, SlavePatch>::rescaleWeightingFactors() const
in file /opt/net/OpenFOAM/OpenFOAM-1.6-ext/src/OpenFOAM/lnInclude/GGIInterpolationWeights.C at line 544
Uncovered faces found. On master: 0 on slave: 112
smoothSolver: Solving for Ux, Initial residual = 0.849927, Final residual = 1.48419e+90, No Iterations 1000
smoothSolver: Solving for Uy, Initial residual = 0.857573, Final residual = 6.4517e+90, No Iterations 1000
smoothSolver: Solving for Uz, Initial residual = 0.834989, Final residual = 2.61278e+90, No Iterations 1000
GAMG: Solving for p, Initial residual = 1, Final residual = 0.00981603, No Iterations 100
time step continuity errors : sum local = 1.97147e+87, global = -3.51143e+86, cumulative = -3.51143e+86
GAMG: Solving for p, Initial residual = 0.057575, Final residual = 0.00055621, No Iterations 72
time step continuity errors : sum local = 3.02876e+87, global = 5.12138e+86, cumulative = 1.60995e+86
GAMG: Solving for p, Initial residual = 0.248958, Final residual = 9.762e-07, No Iterations 625
time step continuity errors : sum local = 1.17812e+84, global = 4.43482e+83, cumulative = 1.61438e+86
smoothSolver: Solving for omega, Initial residual = 1, Final residual = 0.0922146, No Iterations 5
smoothSolver: Solving for k, Initial residual = 0.0599044, Final residual = 0.00342165, No Iterations 2
ExecutionTime = 186.33 s ClockTime = 186 s

Courant Number mean: 5.53324e+89 max: 5.88102e+92 velocity magnitude: 1.70455e+97
Gleitkomma-Ausnahme
gulacd2k@ws07:~/OpenFOAM/gulacd2k-2.1.x/02_deneme/transient/GGI/Transient_tests/test_1> ^C
gulacd2k@ws07:~/OpenFOAM/gulacd2k-2.1.x/02_deneme/transient/GGI/Transient_tests/test_1>



I am also not sure about the settings in my dynamicMeshDict file. Can anyone give me a hint how to set my dynamicMeshDict file?

thanks in advance

dogan April 30, 2013 14:30

5 Attachment(s)
here my some of the settings:

dogan April 30, 2013 14:31

5 Attachment(s)
and the others


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