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array of volScalarfield

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Old   May 31, 2018, 22:27
Post array of volScalarfield
  #1
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Anshul
Join Date: Dec 2017
Location: India
Posts: 25
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sonGoku is on a distinguished road
i tried to declare an array of type volScalarfield as-
volScalarField Xsi
(
IOobject
(
"Xsi",
runTime.timeName(),
mesh,
IOobject::NO_READ,
IOobject::AUTO_WRITE
),
mesh,
dimensionedScalar("Xsi", dimless, 0)
);



volScalarField
(
IOobject
(
"Xsi[" + std::to_string(4) + "]",
runTime.timeName(),
mesh,
IOobject::NO_READ,
IOobject::NO_WRITE
),
mesh,
Xsi[4]
);





which compiled well

but when I added eqn in my main code as-
fo<< "\nCalculating Xsi\n" << endl;
for(int i =0 ; i<5 ; i++)
{ volScalarField& Xsii = Xsi[i];
while (pimple.correctNonOrthogonal())
{
fvScalarMatrix XsiiEqn
(
fvm::ddt(Xsii)-pow(1-Xsii,n)*A_1*exp(-Ea_1/(R*T))
== fvOptions(Xsii)
);




fvOptions.constrain(XsiiEqn);
XsiiEqn.solve();
fvOptions.correct(Xsii);

}}


it displayed compilation error as follows-
error: invalid initialization of reference of type ‘Foam::volScalarField& {aka Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh>&}’ from expression of type ‘double’
{ volScalarField& Xsii = Xsi[i];
^
/home/anshul/OpenFOAM/OpenFOAM-dev/wmake/rules/General/transform:25: recipe for target '/home/anshul/OpenFOAM/OpenFOAM-dev/platforms/linux64Gcc62DPInt32Opt/applications/solvers/basic/ablationFoam/ablationFoam.o' failed



I don't know if there is problem in my declaration of array or initialization of field Xsii

Pls anyone Guide me through this.
Any sort of help is highly appreciated

Thank You
sonGoku is offline   Reply With Quote

Old   April 30, 2020, 07:06
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  #2
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geth03 is on a distinguished road
if you read the error:

error: invalid initialization of reference of type ‘Foam::volScalarField& {aka Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh>&}’ from expression of type ‘double’
{ volScalarField& Xsii = Xsi[i];
^

you see that you create a reference of type volScalarField and try to reference an object of type double, which is illegal. your reference type must be the same as your referenced type.
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