[saicharan662000@gmail.com]

Hello Foamers,
I am trying to acess the cell volumes in a sub routine I wrote in twoPhaseMixtureThermo.C in compressibleInterfoam


I declared the variable for storing volume of cell as shown below

const volScalarField& cellVolume = alpha1().db().lookupObject<volScalarField>("cellVolu");

And In createFields.H I coded cellVolu as shown below.

volScalarField cellVolu
    (
    IOobject
       (
        "cellVolu",
        runTime.timeName(),
        mesh,
        IOobject::NO_READ,
        IOobject::NO_WRITE
       ),
        mesh,
    dimensionedScalar("zero", dimVolume, 0.0)
    );
    cellVolu.ref() = mesh.V();

I compiled solver but I got an error . I am attaching it below.

/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Version:  8
     \\/     M anipulation  |
\*---------------------------------------------------------------------------*/
Build  : 8-1c9b5879390b
Exec   : myCompressibleInterFoam_1
Date   : Feb 04 2022
Time   : 16:09:02
Host   : "hari"
PID    : 22278
I/O    : uncollated
Case   : /home/hari/OpenFOAM/hari-8/run/damBreakcomp_3
nProcs : 1
sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE).
fileModificationChecking : Monitoring run-time modified files using timeStampMaster (fileModificationSkew 10)
allowSystemOperations : Allowing user-supplied system call operations

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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
thermo:psi
alpha.water
p_rgh
p
T
alpha.air
thermo:alpha
)


    From function const Type& Foam::objectRegistry::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::printStack(Foam::Ostream&) at ??:?
#1  Foam::error::abort() at ??:?
#2  Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> const& Foam::objectRegistry::lookupObject<Foam::GeometricField<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 tell me How to resolve it??
Thanks in advance

[saicharan662000@gmail.com]

problem solved.
For guys who had similar problem add cellVolu subroutine before start of construction of mixture model.