[fedvasu]

Hi folks,

I am (trying) to initializing my variable with file from 0.

the specific file being alphaPhi but for some reason the object isn't initialized by that object.


(alphaPhi is of type "volScalarField")

Here is my snippet.

alphaPhi_
    (
        volScalarField (IOobject
        (
            "alphaPhi",
            mesh.time().timeName(),
            mesh,
            IOobject::MUST_READ,
            IOobject::NO_WRITE
        ),
        mesh,
        dimensionSet(0, 0, 0, 0, 0)
    ))

(You can safely ignore the superfluous additional volScalarField temprorary object)

The (non-empty/symmetry) boundary conditions for this variable are totally different for the file defined in 0 and the one initialized ('uniform'/fixed vs calculated).

and I am getting this warning when I run my code (NO ERROR just this warning).

--> FOAM Warning : 
    From function GeometricField<Type, PatchField, GeoMesh>::readIfPresent()
    in file /home/vasu/OpenFOAM/OpenFOAM-2.4.0/src/OpenFOAM/lnInclude/GeometricField.C at line 108
    read option IOobject::MUST_READ or MUST_READ_IF_MODIFIED suggests that a read constructor for field alphaPhi would be more appropriate.

So what I am I doing wrong, I suspect I am missing something basic here.

[Zeppo]

Hi
Actually, the signature of the volScalarField's constructor you are calling is

GeometricField (const IOobject &, const Mesh &, const dimensionSet &, const word &patchFieldType=PatchField< Type >::calculatedType())

See, the 4th parameter has a default value PatchField< Type >::calculatedType().
You didn't pass anything for this parameter so the default value was used.
You'd be better off calling the following constructor

GeometricField (const IOobject &, const Mesh &)

The dimensions can be safely specified directly in your alphaPhi file. If you do so that "strange" warning will disappear. I swear it!

[fedvasu]

Originally Posted by Zeppo

Hi
Actually, the signature of the volScalarField's constructor you are calling is

GeometricField (const IOobject &, const Mesh &, const dimensionSet &, const word &patchFieldType=PatchField< Type >::calculatedType())

See, the 4th parameter has a default value PatchField< Type >::calculatedType().
You didn't pass anything for this parameter so the default value was used.
You'd be better off calling the following constructor

GeometricField (const IOobject &, const Mesh &)

The dimensions can be safely specified directly in your alphaPhi file. If you do so that "strange" warning will disappear. I swear it!

Sorry for the late reply.


You are right, one has to use appropriate constructors.

However I had to specify the read atrributes (for other reasons), I used READ_IF_PRESENT, attribute, It works for my case.

Thanks Zeppo.

Regards,