fanFvPatchFields.C

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    Copyright (C) 2011-2017 OpenFOAM Foundation
    Copyright (C) 2017-2020 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
\*---------------------------------------------------------------------------*/
 
#include "fanFvPatchFields.H"
#include "addToRunTimeSelectionTable.H"
#include "volFields.H"
#include "surfaceFields.H"
#include "Tuple2.H"
#include "PolynomialEntry.H"
 
// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
 
template<>
void Foam::fanFvPatchField<Foam::scalar>::calcFanJump()
{
    if (this->cyclicPatch().owner())
    {
        const surfaceScalarField& phi =
            db().lookupObject<surfaceScalarField>(phiName_);
 
        const fvsPatchField<scalar>& phip =
            patch().patchField<surfaceScalarField, scalar>(phi);
 
        scalarField Un(max(phip/patch().magSf(), scalar(0)));
        if (uniformJump_)
        {
            scalar area = gSum(patch().magSf());
            Un = gSum(Un*patch().magSf())/area;
 
            if (nonDimensional_)
            {
                // Create an non-dimensional velocity
                Un =
                    120.0*Un/pow3(constant::mathematical::pi)
                  / dm_/rpm_;
            }
        }
 
        if (phi.dimensions() == dimDensity*dimVelocity*dimArea)
        {
            Un /= patch().lookupPatchField<volScalarField, scalar>(rhoName_);
        }
 
        if (nonDimensional_)
        {
            scalarField deltap(this->jumpTable_->value(Un));
 
            // Convert non-dimensional deltap from curve into deltaP
            scalarField pdFan
            (
                deltap*pow4(constant::mathematical::pi)*sqr(dm_*rpm_)/1800.0
            );
 
            this->jump_ = pdFan;
        }
        else
        {
            this->jump_ = this->jumpTable_->value(Un);
        }
    }
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
template<>
Foam::fanFvPatchField<Foam::scalar>::fanFvPatchField
(
    const fvPatch& p,
    const DimensionedField<scalar, volMesh>& iF,
    const dictionary& dict
)
:
    uniformJumpFvPatchField<scalar>(p, iF),
    phiName_(dict.getOrDefault<word>("phi", "phi")),
    rhoName_(dict.getOrDefault<word>("rho", "rho")),
    uniformJump_(dict.getOrDefault("uniformJump", false)),
    nonDimensional_(dict.getOrDefault("nonDimensional", false)),
    rpm_(0),
    dm_(0)
{
    if (nonDimensional_)
    {
        dict.readEntry("rpm", rpm_);
        dict.readEntry("dm", dm_);
    }
 
    if (this->cyclicPatch().owner())
    {
        this->jumpTable_ = Function1<scalar>::New("jumpTable", dict);
    }
 
    if (dict.found("value"))
    {
        fvPatchScalarField::operator=
        (
            scalarField("value", dict, p.size())
        );
    }
    else
    {
        this->evaluate(Pstream::commsTypes::blocking);
    }
}
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
    makeTemplatePatchTypeField(scalar, fan);
}
 
 
// ************************************************************************* //