[HeleShawman]

Hi everyone!

I am trying to solve a 3D turbulent flow in a channel similar to this tutorial:

https://www.openfoam.com/documentati...nnel-flow.html

With the only difference that I am adding a small block downstream where I add an inlet that adds flow from the bottom upwards (to mix with the main stream)-see attached figure (mesh.png).

I use exactly the same controlDict, fvScheme and fvSolution files as in the abovementioned case (I attach the blockMeshDict file, which based in that case analogous file).

It seems a really simple problem very similar to one already solved in the OpenFOAM documentation, however, when I run the case using pimpleFoam: the following error appears:

**************************************************
PIMPLE: iteration 1
Turbulent DFSEM patch: inlet seeded 601 eddies with total volume 1.57943
smoothSolver: Solving for Ux, Initial residual = 1, Final residual = 0.0641366, No Iterations 1
smoothSolver: Solving for Uy, Initial residual = 1, Final residual = 0.0789141, No Iterations 1
smoothSolver: Solving for Uz, Initial residual = 1, Final residual = 0.0165905, No Iterations 1
GAMG: Solving for p, Initial residual = 1, Final residual = 8.55324e-07, No Iterations 99
time step continuity errors : sum local = 3.02402e-09, global = -8.48373e-10, cumulative = -8.48373e-10
PIMPLE: iteration 2
#0 Foam::error:rintStack(Foam::Ostream&) at ??:?
#1 Foam::sigFpe::sigHandler(int) at ??:?
#2 ? in /lib/x86_64-linux-gnu/libpthread.so.0
#3 Foam::smoothSolver::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const at ??:?
#4 Foam::fvMatrix<Foam::Vector<double> >::solveSegregated(Foam::dictionary const&) at ??:?
#5 Foam::fvMatrix<Foam::Vector<double> >::solveSegregatedOrCoupled(Foam::dictionary const&) at ??:?
#6 Foam::fvMesh::solve(Foam::fvMatrix<Foam::Vector<do uble> >&, Foam::dictionary const&) const at ??:?
#7 ? in ~/OpenFOAM/OpenFOAM-v1912/platforms/linux64GccDPInt32Opt/bin/pimpleFoam
#8 __libc_start_main in /lib/x86_64-linux-gnu/libc.so.6
#9 ? in ~/OpenFOAM/OpenFOAM-v1912/platforms/linux64GccDPInt32Opt/bin/pimpleFoam
Floating point exception (core dumped)
**************************************************

Do anyone know what is happening and how could it be solved?

Sorry for my ignorance as it seems to be a very basic question!

Kind regards,