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empty y range warning and error

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Old   February 20, 2013, 13:57
Default empty y range warning and error
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Ehsan
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the warning is followed by an error i suppose related to the warning.what does that mean?
Code:
Courant Number mean: 0.1554817219 max: 0.3940381209
deltaT = 3.448275862e-08
Time = 0.000183655
Warning: empty y range [-0.00151313:-0.00151313], adjusting to [-0.00152827:-0.001498]

diagonal:  Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0
PIMPLE: iteration 1
#0  Foam::error::printStack(Foam::Ostream&) in "/opt/openfoam211/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
#1  Foam::sigFpe::sigHandler(int) in "/opt/openfoam211/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
#2   in "/lib/x86_64-linux-gnu/libc.so.6"
#3  Foam::sqrt(Foam::Field<double>&, Foam::UList<double> const&) in "/opt/openfoam211/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
#4  Foam::sqrt(Foam::UList<double> const&) in "/opt/openfoam211/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
#5  parserPatch::PatchValueExpressionParser::parse() in "/home/ehsan/OpenFOAM/ehsan-2.1.1/platforms/linux64GccDPOpt/lib/libswak4FoamParsers.so"
#6  Foam::PatchValueExpressionDriver::parse(std::string const&) in "/home/ehsan/OpenFOAM/ehsan-2.1.1/platforms/linux64GccDPOpt/lib/libswak4FoamParsers.so"
#7  Foam::CommonValueExpressionDriver::evaluateVariable(Foam::word const&, Foam::string const&) in "/home/ehsan/OpenFOAM/ehsan-2.1.1/platforms/linux64GccDPOpt/lib/libswak4FoamParsers.so"
#8  Foam::CommonValueExpressionDriver::addVariables(Foam::string const&, bool) in "/home/ehsan/OpenFOAM/ehsan-2.1.1/platforms/linux64GccDPOpt/lib/libswak4FoamParsers.so"
#9  Foam::CommonValueExpressionDriver::addVariables(Foam::List<Foam::string> const&, bool) in "/home/ehsan/OpenFOAM/ehsan-2.1.1/platforms/linux64GccDPOpt/lib/libswak4FoamParsers.so"
#10  Foam::CommonValueExpressionDriver::clearVariables() in "/home/ehsan/OpenFOAM/ehsan-2.1.1/platforms/linux64GccDPOpt/lib/libswak4FoamParsers.so"
#11  Foam::groovyBCFvPatchField<Foam::Vector<double> >::updateCoeffs() in "/home/ehsan/OpenFOAM/ehsan-2.1.1/platforms/linux64GccDPOpt/lib/libgroovyBC.so"
#12   at gaussLaplacianSchemes.C:0
#13  Foam::fv::gaussLaplacianScheme<Foam::Vector<double>, double>::fvmLaplacianUncorrected(Foam::GeometricField<double, Foam::fvsPatchField, Foam::surfaceMesh> const&, Foam::GeometricField<Foam::Vector<double>, Foam::fvPatchField, Foam::volMesh> const&) in "/opt/openfoam211/platforms/linux64GccDPOpt/lib/libfiniteVolume.so"
#14  Foam::fv::gaussLaplacianScheme<Foam::Vector<double>, double>::fvmLaplacian(Foam::GeometricField<double, Foam::fvsPatchField, Foam::surfaceMesh> const&, Foam::GeometricField<Foam::Vector<double>, Foam::fvPatchField, Foam::volMesh> const&) in "/opt/openfoam211/platforms/linux64GccDPOpt/lib/libfiniteVolume.so"
#15  Foam::fv::laplacianScheme<Foam::Vector<double>, double>::fvmLaplacian(Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> const&, Foam::GeometricField<Foam::Vector<double>, Foam::fvPatchField, Foam::volMesh> const&) in "/opt/openfoam211/platforms/linux64GccDPOpt/lib/libfiniteVolume.so"
#16  Foam::tmp<Foam::fvMatrix<Foam::Vector<double> > > Foam::fvm::laplacian<Foam::Vector<double>, double>(Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> const&, Foam::GeometricField<Foam::Vector<double>, Foam::fvPatchField, Foam::volMesh> const&) in "/opt/openfoam211/platforms/linux64GccDPOpt/lib/libcompressibleTurbulenceModel.so"
#17  Foam::compressible::RASModels::kOmegaSST::divDevRhoReff(Foam::GeometricField<Foam::Vector<double>, Foam::fvPatchField, Foam::volMesh>&) const in "/opt/openfoam211/platforms/linux64GccDPOpt/lib/libcompressibleRASModels.so"
#18
in "/opt/openfoam211/platforms/linux64GccDPOpt/bin/rhoPimpleFoam"
#19  __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
#20
in "/opt/openfoam211/platforms/linux64GccDPOpt/bin/rhoPimpleFoam"
Floating point exception
Warning: empty y range [-0.00151313:-0.00151313], adjusting to [-0.00152827:-0.001498]

gnuplot> set terminal png small color
                                ^
         line 0: invalid color spec, must be xRRGGBB


gnuplot> set terminal png small color
                                ^
         line 0: invalid color spec, must be xRRGGBB

Killing PID 12841
 PyFoam WARNING on line 232 of file /usr/local/lib/python2.7/dist-packages/PyFoam/Execution/FoamThread.py : Process 12841 was already dead 
Warning: empty y range [-0.00151313:-0.00151313], adjusting to [-0.00152827:-0.001498]

gnuplot> set terminal png small color
                                ^
         line 0: invalid color spec, must be xRRGGBB

Getting LinuxMem: [Errno 2] No such file or directory: '/proc/12841/status'
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