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How to extract alpha cell data in an area within the domain? |
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May 12, 2022, 09:17
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How to extract alpha cell data in an area within the domain?
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#1 |
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New Member
Akshay
Join Date: Jan 2020
Posts: 28
Rep Power: 6  |
Hi, I am using twophaseEulerFoam which is included with multiphaseEulerFoam in OF version 8.
I would like to monitor the phase fraction of gas in water over the time steps, I need to analyze the gas phase fraction at the liquid outlet. But I don't know how to extract this data for all time steps and average it and save it. Right now I am only using probe point at a certain point, but this is not reliable as it only considers a single point. I have attached the cells which I would like to consider. a.PNG b.PNG Thank you |
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May 13, 2022, 15:07
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#2 |
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Senior Member
Joachim Herb
Join Date: Sep 2010
Posts: 650
Rep Power: 21 |
You can use a surfaceFieldValue function object applied to a faceZone. For the ESI version of OpenFOAM see: https://www.openfoam.com/documentati...ieldValue.html
(for the Foundation version, the same is possible) The faceZone can be produced with topoSet. See also: Integrate volVectorField over cross section / cutting plane |
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May 15, 2022, 16:17
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#3 | |
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New Member
Akshay
Join Date: Jan 2020
Posts: 28
Rep Power: 6 |
Quote:
Can you please provide your valuable inputs regarding this issue. Code:
FoamFile
{
version 2.0;
format ascii;
class dictionary;
location "system";
object topoSetDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
actions
(
{
name internalFaces;
type faceSet;
action new;
source boxToFace;
sourceInfo
{
box (0.9823 0.0965 0.457) (1.009 0.1403 0.528);
}
}
{
name internalfacepatch;
type faceZoneSet;
action new;
source setToFaceZone;
sourceInfo
{
faceSet internalFaces;
cellSet internalCells;
flip false;
}
}
);
// ************************************************************************* //
Code:
surfaceFieldValue1
{
type surfaceFieldValue;
libs ("libfieldFunctionObjects.so");
log true;
writeControl writeTime;
writeFields true;
regionType faceZone;
name internalfacepatch;
operation areaAverage;
surfaceFormat none;
fields
(
alpha.oxygen
);
}
Code:
surfaceFieldValue surfaceFieldValue1 write:
--> FOAM FATAL ERROR:
surfaceFieldValue surfaceFieldValue1: faceZone(internalfacepatch):
Unable to process internal faces for volume field alpha.oxygen
From function Foam::tmp<Foam::Field<Type> > Foam::functionObjects::fieldValues::surfaceFieldValue::filterField(const Foam::GeometricField<Type, Foam::fvPatchField, Foam::volMesh>&, bool) const [with Type = double]
in file fieldValues/surfaceFieldValue/surfaceFieldValueTemplates.C at line 416.
FOAM aborting
Generating stack trace...
Backtrace:
ZN10StackTraceC1Ev [0x626c1855+0x25]
module: C:\PROGRA~1\BLUECF~1\ThirdParty-8\platforms\mingw_w64GccDPInt32\lib\libstack_trace.dll
ZN4Foam5error10printStackERNS_7OstreamE [0x6c30ae5a+0x23a]
module: C:\PROGRA~1\BLUECF~1\OpenFOAM-8\platforms\mingw_w64GccDPInt32Opt\lib\libOpenFOAM.dll
ZN4Foam5error5abortEv [0x6c0c68b1+0x211]
module: C:\PROGRA~1\BLUECF~1\OpenFOAM-8\platforms\mingw_w64GccDPInt32Opt\lib\libOpenFOAM.dll
ZNK4Foam15functionObjects11fieldValues17surfaceFieldValue11filterFieldIdEENS_3tmpINS_5FieldIT_EEEERKNS_14GeometricFieldIS6_NS_12fvPatchFieldENS_7volMeshEEEb [0x958fb68+0x1d8]
module: C:\PROGRA~1\BLUECF~1\OpenFOAM-8\platforms\mingw_w64GccDPInt32Opt\lib\libfieldFunctionObjects.dll
ZNK4Foam15functionObjects11fieldValues17surfaceFieldValue14getFieldValuesIdEENS_3tmpINS_5FieldIT_EEEERKNS_4wordEbb [0x9591d7f+0x36f]
module: C:\PROGRA~1\BLUECF~1\OpenFOAM-8\platforms\mingw_w64GccDPInt32Opt\lib\libfieldFunctionObjects.dll
ZN4Foam15functionObjects11fieldValues17surfaceFieldValue11writeValuesIdEEbRKNS_4wordERKNS_5FieldIdEEb [0x94b711d+0x9d]
module: C:\PROGRA~1\BLUECF~1\OpenFOAM-8\platforms\mingw_w64GccDPInt32Opt\lib\libfieldFunctionObjects.dll
ZN4Foam15functionObjects11fieldValues17surfaceFieldValue5writeEv [0x939d2cb+0x24b]
module: C:\PROGRA~1\BLUECF~1\OpenFOAM-8\platforms\mingw_w64GccDPInt32Opt\lib\libfieldFunctionObjects.dll
ZN4Foam15functionObjects11timeControl5writeEv [0x6c18a32d+0x2d]
module: C:\PROGRA~1\BLUECF~1\OpenFOAM-8\platforms\mingw_w64GccDPInt32Opt\lib\libOpenFOAM.dll
ZN4Foam18functionObjectList5startEv [0x6c180acf+0x8f]
module: C:\PROGRA~1\BLUECF~1\OpenFOAM-8\platforms\mingw_w64GccDPInt32Opt\lib\libOpenFOAM.dll
ZNK4Foam4Time3runEv [0x6c18ccfd+0x19d]
module: C:\PROGRA~1\BLUECF~1\OpenFOAM-8\platforms\mingw_w64GccDPInt32Opt\lib\libOpenFOAM.dll
(No symbol) [0x472123]
module: C:\PROGRA~1\BLUECF~1\OpenFOAM-8\platforms\mingw_w64GccDPInt32Opt\bin\multiphaseEulerFoam.exe
(No symbol) [0x4013c1]
module: C:\PROGRA~1\BLUECF~1\OpenFOAM-8\platforms\mingw_w64GccDPInt32Opt\bin\multiphaseEulerFoam.exe
(No symbol) [0x4014f6]
module: C:\PROGRA~1\BLUECF~1\OpenFOAM-8\platforms\mingw_w64GccDPInt32Opt\bin\multiphaseEulerFoam.exe
BaseThreadInitThunk [0x7ffbb2517034+0x14]
module: C:\Windows\System32\KERNEL32.DLL
RtlUserThreadStart [0x7ffbb32e2651+0x21]
module: C:\Windows\SYSTEM32\ntdll.dll
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May 16, 2022, 09:22
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#4 | |
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New Member
Akshay
Join Date: Jan 2020
Posts: 28
Rep Power: 6 |
Quote:
HTML Code:
https://www.cfd-online.com/Forums/openfoam-post-processing/238974-facezoneaverage-function-object-does-not-work-field-u-p-etc.html |
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| Tags |
| post procesing, twophaseeuelrfoam |
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