[Elham]

Hi,

I want to log x_diameter and y-Diameter of a falling droplet in air and use the following command
functions{
createInterface
{
type createSampledSurface;
outputControlMode timeStep;
outputInterval 1;
// updateMesh true;
surfaceName interface;
surface {
type isoSurface;
isoField alpha1;
isoValue 0.9;
interpolate true;
}
}

xDiameter
{
type swakExpression;
valueType surface;
surfaceName interface;
verbose true;
expression "pos().x";
accumulations (
min
max
);
verbose true;
}

yDiameter
{
type swakExpression;
valueType surface;
surfaceName interface;
verbose true;
expression "pos().y";
accumulations (
min
max
);
verbose true;
}
}

And it returnes

Expression downAverage : swak4Foam: Allocating new repository for sampledMeshes
swak4Foam: Allocating new repository for sampledGlobalVariables
#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::divide(Foam::Field<double>&, Foam::UList<double> const&, Foam::UList<double> const&) at ??:?
#4 void Foam::divide<Foam::fvPatchField, Foam::volMesh>(Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh>&, Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> const&, Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> const&) at ??:?
#5 Foam::tmp<Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> > Foam:perator/<Foam::fvPatchField, Foam::volMesh>(Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> const&, Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> const&) at ??:?
#6 parserField::FieldValueExpressionParser:arse() at ??:?
#7 Foam::FieldValueExpressionDriver:arseInternal(in t) at ??:?
#8 Foam::CommonValueExpressionDriver:arse(Foam::exp rString const&, Foam::word const&) at ??:?
#9 Foam::swakExpressionFunctionObject::write() at ??:?
#10 Foam::simpleFunctionObject::execute(bool) at ??:?
#11 Foam::functionObjectList::execute(bool) at ??:?
#12 Foam::Time::run() const at ??:?
#13
at ??:?
#14 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
#15
at ??:?
Floating point exception (core dumped)

Any idea for solving the problem is appreciated.

Regards,

Elham