W
@程迪
对于fvm算子生成的fvMatrix和fvc生成的volScalarField相加生成fvMatrix的时候，volScalarField会被自动乘以网格体积？
没错，参考 https://github.com/OpenFOAM/OpenFOAM-dev/blob/master/src/finiteVolume/fvMatrices/fvMatrix/fvMatrix.C#L1691
template<class Type>
Foam::tmp<Foam::fvMatrix<Type>> Foam::operator+
(
const fvMatrix<Type>& A,
const tmp<GeometricField<Type, fvPatchField, volMesh>>& tsu
)
{
checkMethod(A, tsu(), "+");
tmp<fvMatrix<Type>> tC(new fvMatrix<Type>(A));
tC.ref().source() -= tsu().mesh().V()*tsu().primitiveField();
tsu.clear();
return tC;
}
感觉A是除以了体积的对角系数
没错，参考 https://github.com/OpenFOAM/OpenFOAM-dev/blob/master/src/finiteVolume/fvMatrices/fvMatrix/fvMatrix.C#L724
template<class Type>
Foam::tmp<Foam::volScalarField> Foam::fvMatrix<Type>::A() const
{
tmp<volScalarField> tAphi
(
new volScalarField
(
IOobject
(
"A("+psi_.name()+')',
psi_.instance(),
psi_.mesh(),
IOobject::NO_READ,
IOobject::NO_WRITE
),
psi_.mesh(),
dimensions_/psi_.dimensions()/dimVol,
extrapolatedCalculatedFvPatchScalarField::typeName
)
);
tAphi.ref().primitiveFieldRef() = D()/psi_.mesh().V();
tAphi.ref().correctBoundaryConditions();
return tAphi;
}