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How to acess the cell volumes and use them in the equations?

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Old   February 3, 2022, 04:49
Default How to acess the cell volumes and use them in the equations?
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hari charan
Join Date: Sep 2021
Location: India,hyderabad
Posts: 96
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saicharan662000@gmail.com is on a distinguished road
Hello everyone,


I am new to openfoam. I am calculating interface area . I wore a subroutine in twoPhaseMixtureThermo.C in compressibleInterFoam solver. I used the following subroutine in twoPhaseMixtureThermo.C to use cell volume .


Code:
const volScalarField& cellVolume =
        alpha1().db().lookupObject<volScalarField>("cellVolu");
And in createFields.H I wrote the following subroutine.


Code:
volScalarField cellVolume
    (
    IOobject
       (
        "cellVolume",
        runTime.timeName(),
        mesh,
        IOobject::NO_READ,
        IOobject::AUTO_WRITE
       ),
        mesh,
    dimensionedScalar("zero", dimVolume, 0.0)
    );
     cellVolume.ref() = mesh.V();
Now I am getting the following error while running test case:


Create time

Create mesh for time = 0


PIMPLE: No convergence criteria found


PIMPLE: Operating solver in transient mode with 1 outer corrector
PIMPLE: Operating solver in PISO mode


Reading field p_rgh

Reading field U

Reading/calculating face flux field phi

Constructing twoPhaseMixtureThermo

Reading field interfaceArea



--> FOAM FATAL ERROR:

request for volScalarField cellVolu from objectRegistry region0 failed
available objects of type volScalarField are


9
(
thermo:mu
interfaceProperties:K
thermosi
alpha.water
p_rgh
p
T
alpha.air
thermo:alpha
)


From function const Type& Foam:bjectRegistry::lookupObject(const Foam::word&) const [with Type = Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh>]
in file /opt/openfoam8/src/OpenFOAM/lnInclude/objectRegistryTemplates.C at line 211.

FOAM aborting

#0 Foam::error:rintStack(Foam::Ostream&) at ??:?
#1 Foam::error::abort() at ??:?
#2 Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> const& Foam:bjectRegistry::lookupObject<Foam::Geometric Field<double, Foam::fvPatchField, Foam::volMesh> >(Foam::word const&) const in "/home/hari/OpenFOAM/hari-8/platforms/linux64GccDPInt32Opt/bin/myCompressibleInterFoam_1"
#3 Foam::twoPhaseMixtureThermo::interfaceArea() const at ??:?
#4 Foam::twoPhaseMixtureThermo::mDotAlphal() const at ??:?
#5 Foam::twoPhaseMixtureThermo::twoPhaseMixtureThermo (Foam::GeometricField<Foam::Vector<double>, Foam::fvPatchField, Foam::volMesh> const&, Foam::GeometricField<double, Foam::fvsPatchField, Foam::surfaceMesh> const&) at ??:?
#6 ? in "/home/hari/OpenFOAM/hari-8/platforms/linux64GccDPInt32Opt/bin/myCompressibleInterFoam_1"
#7 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
#8 ? in "/home/hari/OpenFOAM/hari-8/platforms/linux64GccDPInt32Opt/bin/myCompressibleInterFoam_1"
Aborted (core dumped)



Can anyone help me with this?
Thanks in advance
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compressible multiphase, compressibleinterfoam, openfoam, openfoam 8

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