[leotsixri]

Hi to all,

I am trying to implement surface roughness in a wall by manipulating the /0/nut file directory but I receive the following error after running simpleFoam:

Starting time loop

Time = 1

smoothSolver:  Solving for Ux, Initial residual = 1, Final residual = 0.005883928, No Iterations 1
smoothSolver:  Solving for Uy, Initial residual = 7.677366e-109, Final residual = 7.677366e-109, No Iterations 0
smoothSolver:  Solving for Uz, Initial residual = 1.535473e-108, Final residual = 1.535473e-108, No Iterations 0
#0  Foam::error::printStack(Foam::Ostream&) at ??:?
#1  Foam::sigFpe::sigHandler(int) at ??:?
#2  ? in "/lib/x86_64-linux-gnu/libc.so.6"
#3  Foam::DICPreconditioner::calcReciprocalD(Foam::Field<double>&, Foam::lduMatrix const&) at ??:?
#4  Foam::DICSmoother::DICSmoother(Foam::word const&, Foam::lduMatrix const&, Foam::FieldField<Foam::Field, double> const&, Foam::FieldField<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&) at ??:?
#5  Foam::lduMatrix::smoother::addsymMatrixConstructorToTable<Foam::DICSmoother>::New(Foam::word const&, Foam::lduMatrix const&, Foam::FieldField<Foam::Field, double> const&, Foam::FieldField<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&) at ??:?
#6  Foam::lduMatrix::smoother::New(Foam::word const&, Foam::lduMatrix const&, Foam::FieldField<Foam::Field, double> const&, Foam::FieldField<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&, Foam::dictionary const&) at ??:?
#7  Foam::GAMGSolver::initVcycle(Foam::PtrList<Foam::Field<double> >&, Foam::PtrList<Foam::Field<double> >&, Foam::PtrList<Foam::lduMatrix::smoother>&, Foam::Field<double>&, Foam::Field<double>&) const at ??:?
#8  Foam::GAMGSolver::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const at ??:?
#9  Foam::fvMatrix<double>::solveSegregated(Foam::dictionary const&) at ??:?
#10  Foam::fvMatrix<double>::solve(Foam::dictionary const&) at ??:?
#11  Foam::fvMatrix<double>::solve() at ??:?
#12  ? at ??:?
#13  __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
#14  ? at ??:?
Floating point exception (core dumped)

Is the error relevant to the p file directory? The case worked perfectly before changing the nut file.

Any help?

Regards, Leonidas

[hxaxtma]

Floating Point is mostly caused by wrong setting of BCs. So check them again.

[leotsixri]

Thanks for the reply.

This might was due to false z dimension at blockMeshDict but it is running now. I am waiting to see the differences in the results!