[gu1]

Hi,

Why does OpenFOAM use y_ at times and y_() at others (OpenFOAM 9)?

SpalartAllmarasDES.C

template<class BasicMomentumTransportModel>
tmp<volScalarField::Internal>
SpalartAllmarasDES<BasicMomentumTransportModel>::dTilda
(
    const volScalarField::Internal& chi,
    const volScalarField::Internal& fv1,
    const volTensorField::Internal& gradU
) const
{
    return volScalarField::Internal::New
    (
        modelName("dTilda"),
        min(CDES_*this->delta()(), y_)
    );
}


template<class BasicMomentumTransportModel>
void SpalartAllmarasDES<BasicMomentumTransportModel>::cacheLESRegion
(
    const volScalarField::Internal& dTilda
) const
{
    if (this->mesh_.cacheTemporaryObject(modelName("LESRegion")))
    {
        volScalarField::Internal::New
        (
            modelName("LESRegion"),
            neg(dTilda - y_())
        );
    }
}

SpalartAllmarasDDES.C

template<class BasicMomentumTransportModel>
tmp<volScalarField::Internal>
SpalartAllmarasDDES<BasicMomentumTransportModel>::dTilda
(
    const volScalarField::Internal& chi,
    const volScalarField::Internal& fv1,
    const volTensorField::Internal& gradU
) const
{
    return volScalarField::Internal::New
    (
        modelName("dTilda"),
        max
        (
            this->y_
          - fd(mag(gradU))
           *max
            (
                this->y_() - this->CDES_*this->delta()(),
                dimensionedScalar(dimLength, 0)
            ),
            dimensionedScalar(dimLength, small)
        )
    );
}

...in the same equation I have y_ and y_().

Thanks

[gu1]

Anyone can help me?