[Other] Trouble with symmetryPlane

sture · January 19, 2016, 05:18

Hi,

I get the following ERROR:

$ decomposePar -force
/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 2.3.x |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
/* Windows port by CFD support (www.cfdsupport.com) [based on Symscape] *\
\*---------------------------------------------------------------------------*/
Build : 2.3.x-819030ed51bd
Exec : C:\OpenFOAM\cygwin64\opt\OpenFOAM\OpenFOAM-2.3.x\platforms\cygwin64mingw-w64DPOpt\bin\decomposePar.exe -force
Date : Jan 19 2016
Time : 09:45:54
Host : "KITEMILL-SS-PC"
PID : 15952
Case : C:/OpenFOAM/cygwin64/home/Sture/OpenFOAM/Sture-2.3.x/run/analyser/testWing01
nProcs : 1
fileModificationChecking : Monitoring run-time modified files using timeStampMaster
allowSystemOperations : Disallowing user-supplied system call operations

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

Decomposing mesh region0

Create mesh

--> FOAM FATAL ERROR:
Symmetry plane 'sPlane01' is not planar.
At local face at (-1.021393333 0 -5.561200854) the normal (0 1 0) differs from the average normal (-3.57823214e-007 0.9999997524 -9.100501642e-008) by 1.976405015e-013
Either split the patch into planar parts or use the symmetry patch type

From function symmetryPlanePolyPatch::n()
in file meshes/polyMesh/polyPatches/constraint/symmetryPlane/symmetryPlanePolyPatch.C at line 64.

FOAM exiting

************************************************** ******

What can I do?

Are there any ways to set the geometrical tolerance?

Regards
Sture

Antimony · February 19, 2016, 00:23

Hi,

I am not sure if this addresses your question, but is there a particular reason you want to use symmetryPlane only?

If I remember correctly from the documentation for symmetryPlane, it states a rather stringent requirement in its definition and suggests the "symmetry" BC as a less strict alternative.

Have you given symmetry a shot for your problem?

Cheers,
Antimony

Thangam · March 9, 2016, 00:27

may be you could try using the preservePatches( ) within the decomposeParDict. I did not test it though!

January 19, 2016, 05:18	Trouble with symmetryPlane	#1
sture New Member Sture Smidt Join Date: Mar 2013 Posts: 27 Rep Power: 13	Hi, I get the following ERROR: $ decomposePar -force /---------------------------------------------------------------------------\ \| ========= \| \| \| \\ / F ield \| OpenFOAM: The Open Source CFD Toolbox \| \| \\ / O peration \| Version: 2.3.x \| \| \\ / A nd \| Web: www.OpenFOAM.org \| \| \\/ M anipulation \| \| \---------------------------------------------------------------------------/ /* Windows port by CFD support (www.cfdsupport.com) [based on Symscape] \ \---------------------------------------------------------------------------/ Build : 2.3.x-819030ed51bd Exec : C:\OpenFOAM\cygwin64\opt\OpenFOAM\OpenFOAM-2.3.x\platforms\cygwin64mingw-w64DPOpt\bin\decomposePar.exe -force Date : Jan 19 2016 Time : 09:45:54 Host : "KITEMILL-SS-PC" PID : 15952 Case : C:/OpenFOAM/cygwin64/home/Sture/OpenFOAM/Sture-2.3.x/run/analyser/testWing01 nProcs : 1 fileModificationChecking : Monitoring run-time modified files using timeStampMaster allowSystemOperations : Disallowing user-supplied system call operations // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // Create time Decomposing mesh region0 Create mesh --> FOAM FATAL ERROR: Symmetry plane 'sPlane01' is not planar. At local face at (-1.021393333 0 -5.561200854) the normal (0 1 0) differs from the average normal (-3.57823214e-007 0.9999997524 -9.100501642e-008) by 1.976405015e-013 Either split the patch into planar parts or use the symmetry patch type From function symmetryPlanePolyPatch::n() in file meshes/polyMesh/polyPatches/constraint/symmetryPlane/symmetryPlanePolyPatch.C at line 64. FOAM exiting ************************************************ **** What can I do? Are there any ways to set the geometrical tolerance? Regards Sture

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February 19, 2016, 00:23		#2
Antimony Senior Member Join Date: Aug 2013 Posts: 407 Rep Power: 15	Hi, I am not sure if this addresses your question, but is there a particular reason you want to use symmetryPlane only? If I remember correctly from the documentation for symmetryPlane, it states a rather stringent requirement in its definition and suggests the "symmetry" BC as a less strict alternative. Have you given symmetry a shot for your problem? Cheers, Antimony

March 9, 2016, 00:27		#3
Thangam Member Thangam Natarajan Join Date: Dec 2010 Location: Perth Posts: 70 Rep Power: 16	may be you could try using the preservePatches( ) within the decomposeParDict. I did not test it though!