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-   -   Really weird problem could nbt figure it out (http://www.cfd-online.com/Forums/openfoam-solving/59262-really-weird-problem-could-nbt-figure-out.html)

21kalee December 29, 2007 06:17

THE PROBLEM MAY BE SIMPLE, BUT
 
THE PROBLEM MAY BE SIMPLE, BUT I COULDN'T FIGURE IT OUT.




Create mesh for time = 0

Reading thermodynamicProperties

Reading transportProperties

Reading field p

Reading field T

Calculating field e from T

Reading field U

Reading/calculating face flux field phi


Starting time loop

Time = 1e-05

Courant Number mean: 0 max: -0


--> FOAM FATAL ERROR : This mesh contains patches of type empty but is not 1D or 2D
by virtue of the fact that the number of faces of this
empty patch is not divisible by the number of cells.#0 Foam::error::printStack(Foam:http://www.cfd-online.com/OpenFOAM_D...part/proud.gifstream&)
#1 Foam::error::abort()
#2 Foam::emptyFvPatchField<double>::updateCoeffs()
#3 Foam::fvPatchField<double>::evaluate()
#4 Foam::GeometricField<double,>::GeometricBoundaryFi eld::evaluate()
#5 Foam::tmp<foam::geometricfield<double,> > Foam::fvc::surfaceIntegrate<double>(Foam::Geometri cField<double,> const&)
#6 Foam::tmp<foam::geometricfield<double,> > Foam::fvc::div<double>(Foam::GeometricField<double ,> const&)
#7 main
#8 __libc_start_main
#9 __gxx_personality_v0 at /usr/src/packages/BUILD/glibc-2.3/csu/../sysdeps/i386/elf/start.S:122


From function emptyFvPatchField<type>::updateCoeffs()
in file fields/fvPatchFields/basicFvPatchFields/empty/emptyFvPatchField.C at line 139.

FOAM aborting

mattijs December 29, 2007 09:48

empty b.c. can only be used fo
 
empty b.c. can only be used for 1D or 2D geometry. In simple terms your mesh has be createable by extrusion. Front and back then can be empty but it is up to you to guarantee no flow/pressure gradient in that direction. See the lid-driven tutorial as an example.

21kalee December 30, 2007 11:30

Thanks, It really helped and i
 
Thanks, It really helped and i had fixed the problem


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