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Old   April 8, 2010, 04:21
Default About mixingPlane GGI in OpenFoam-1.5-dev
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Zheng.Zhi
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Hello everybody, I am interesting of "rotorStatorInterfaces" in "trunk/Breeder_1.5/OSIG/TurboMachinery" and I download source code from

http://openfoam-extend.svn.sourcefor...urboMachinery/

When I try to use mixingPlane GGI (which is developed by Mr.Franz Blaim.)in my case, I meet an Error :

Starting time loop
Time = 1e-05
Courant Number mean: 0 max: 0.0217673 velocity magnitude: 0.4
PBiCG: Solving for Ux, Initial residual = 0, Final residual = 0, No Iterations 0
PBiCG: Solving for Uy, Initial residual = 0, Final residual = 0, No Iterations 0
PBiCG: Solving for Uz, Initial residual = 1, Final residual = 5.41447e-10, No Iterations 1
Segmentation fault

Sometimes the calculate can go on , but still have Error:

Starting time loop
Time = 1e-05
Courant Number mean: 0 max: 0.00195361 velocity magnitude: 0.4
PBiCG: Solving for Ux, Initial residual = 0, Final residual = 0, No Iterations 0
PBiCG: Solving for Uy, Initial residual = 0, Final residual = 0, No Iterations 0
PBiCG: Solving for Uz, Initial residual = 1, Final residual = 4.11818e-10, No Iterations 1
Center(0 0 0)
Direction (0 1 0)
Axis (0 0 1)
0.801864
MinCB before gB0()
MinCB Size
42
(
1
2
.
.
.
40
41
42
)
Not axial
Evaluation of GGI weighting factors:
From function void GGIInterpolation<MasterPatch, SlavePatch>::rescaleWeightingFactors() const
in file lnInclude/GGIInterpolationWeights.C at line 534
Uncovered faces found. On master: 40 on slave: 0
Largest slave weighting factor correction : 0.120226 average: 0.00111096
Largest master weighting factor correction: 0.999716 average: 0.00828556

Can anybody give me suggestion with it ?

And is there any new version mixingPlane GGI for the OpenFOAM-1.6-dev ?

Thanks!
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Old   April 29, 2010, 05:47
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Stylianos Kyriacou
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Try to initialize your velocity field with something small, i think the prob is that it makes massflow averaging for the velocities at the mixingplane and when that is zero it crashes.

p.s. are you using MRFSimpleFoam for that btw?
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Old   July 3, 2010, 18:29
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Sunny William
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Hello Zheng,

I am also interested in using the mixingPlaneGGI for my impeller/diffuser stage case.

Following on the problem you had in the first post - did you manage to solve your problem in the end?

Also, please excuse me for throwing in a different topic but how did you manage to compile the mixingPlaneGGI?

I have followed all the steps included in the instructions given (including the GGIInterpolation folder etc.). Howerver, I get the following error message while trying to compile (- using "wmake libso"):

Quote:
make: *** No rule to make target `interpolations/GGIInterpolation/GGIInterpolationName.C', needed by `interpolations/GGIInterpolation/GGIInterpolationName.dep'. Stop.
Could you kindly shed some light on the error?

Also, do you use OF-1.5-dev? The reason I ask this is because in the "CompilingHowTO.txt" it refers to the 1.4 version.


Many thanks,

Sunny
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