[Dreamland]

I want analyze the internal airflow in an indoor space with supply and exhaust ducts and doors. Please suggest which solver to use and what to do with the boundary conditions.

I copied the pitzDaily folder of the simpleFoam in the tutorial and changed the boundary conditions for analysis.

I setting it would be interpreted up to 2000 iterations, but after a little more than 600 iterations, the calculation stopped with the following error message. If anyone knows why this is the case, I would appreciate it if you could let me know.

smoothSolver: Solving for Ux, Initial residual = 0.516311, Final residual = 0.0378268, No Iterations 22
smoothSolver: Solving for Uy, Initial residual = 0.484036, Final residual = 0.0173446, No Iterations 23
smoothSolver: Solving for Uz, Initial residual = 0.495891, Final residual = 0.0272692, No Iterations 22
#0 Foam::error:rintStack(Foam::Ostream&) at ??:?
#1 Foam::sigFpe::sigHandler(int) at ??:?
#2 ? in "/lib/x86_64-linux-gnu/libc.so.6"
#3 Foam::GAMGSolver::scale(Foam::Field<double>&, Foam::Field<double>&, Foam::lduMatrix const&, Foam::FieldField<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&, Foam::Field<double> const&, unsigned char) const at ??:?
#4 Foam::GAMGSolver::Vcycle(Foam::PtrList<Foam::lduMa trix::smoother> const&, Foam::Field<double>&, Foam::Field<double> const&, Foam::Field<double>&, Foam::Field<double>&, Foam::Field<double>&, Foam::Field<double>&, Foam::Field<double>&, Foam::PtrList<Foam::Field<double> >&, Foam::PtrList<Foam::Field<double> >&, unsigned char) const at ??:?
#5 Foam::GAMGSolver::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const at ??:?
#6 Foam::fvMatrix<double>::solveSegregated(Foam::dict ionary const&) at ??:?
#7 Foam::fvMatrix<double>::solve(Foam::dictionary const&) in "/opt/openfoam10/platforms/linux64GccDPInt32Opt/bin/simpleFoam"
#8 Foam::fvMatrix<double>::solve() in "/opt/openfoam10/platforms/linux64GccDPInt32Opt/bin/simpleFoam"
#9 ? in "/opt/openfoam10/platforms/linux64GccDPInt32Opt/bin/simpleFoam"
#10 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
#11 ? in "/opt/openfoam10/platforms/linux64GccDPInt32Opt/bin/simpleFoam"
Floating point exception

I think it's divergent, but I don't know why. If anyone knows, please let me know.

each boundary condition is as follows.
U, p, epsilon, f, k, nut, nuTilda, omega

U
/*--------------------------------*- C++ -*----------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Version: 10
\\/ M anipulation |
\*---------------------------------------------------------------------------*/
FoamFile
{
format ascii;
class volVectorField;
object U;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

dimensions [0 1 -1 0 0 0 0];

internalField uniform (0 0 0);

boundaryField
{
w-entry-room:015
{
type noSlip;
}

w-entry-room:015-shadow
{
type noSlip;
}

w-entry-room
{
type noSlip;
}

w-car
{
type noSlip;
}

z-press-entry-door
{
type zeroGradient;
}

w-entry-top
{
type noSlip;
}

w-entry-bottom
{
type noSlip;
}

z-ordor-02-equip
{
type noSlip;
}

w-equip
{
type noSlip;
}

w-duct-sa
{
type noSlip;
}

z-vel-sa-2
{
type fixedValue;
value uniform (0 0 2.39);
}

w-duct-ea
{
type noSlip;
}

z-suc-ea-01-4
{
type fixedValue;
value uniform (0 0 -4.04);
}

z-suc-ea-02-4
{
type fixedValue;
value uniform (0 0 4.14);
}

z-ordor-01-car
{
type noSlip;
}

}

// ************************************************** *********************** //

p

/*--------------------------------*- C++ -*----------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Version: 10
\\/ M anipulation |
\*---------------------------------------------------------------------------*/
FoamFile
{
format ascii;
class volScalarField;
object p;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

dimensions [0 2 -2 0 0 0 0];

internalField uniform 0;

boundaryField
{
w-entry-room:015
{
type zeroGradient;
}

w-entry-room:015-shadow
{
type zeroGradient;
}

w-entry-room
{
type zeroGradient;
}

w-car
{
type zeroGradient;
}

z-press-entry-door
{
type fixedValue;
value uniform 0;
}

w-entry-top
{
type zeroGradient;
}

w-entry-bottom
{
type zeroGradient;
}

z-ordor-02-equip
{
type zeroGradient;
}

w-equip
{
type zeroGradient;
}

w-duct-sa
{
type zeroGradient;
}

z-vel-sa-2
{
type zeroGradient;

}

w-duct-ea
{
type zeroGradient;
}

z-suc-ea-01-4
{
type zeroGradient;

}

z-suc-ea-02-4
{
type zeroGradient;

}

z-ordor-01-car
{
type zeroGradient;
}

}

// ************************************************** *********************** //