mappedFilmPressureFvPatchScalarField: New film BC to map the neighbou…

…ring fluid pressure to the film mappedFilmPressureFvPatchScalarField is derived from the new mappedFvPatchField base-class for mapped patch fields including mappedValueFvPatchField. Class Foam::mappedFilmPressureFvPatchScalarField Description Film pressure boundary condition which maps the neighbouring fluid patch pressure to both the surface patch and internal film pressure field.
OpenFOAM · Mar 3, 2023 · 12decc0 · 12decc0
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diff --git a/applications/solvers/modules/isothermalFilm/Make/files b/applications/solvers/modules/isothermalFilm/Make/files
@@ -18,6 +18,7 @@ patches/mappedFilmSurface/mappedFilmSurfaceFvPatch/mappedFilmSurfaceFvPatch.C
 
 derivedFvPatchFields/alphaOne/alphaOneFvPatchScalarField.C
 derivedFvPatchFields/filmContactAngle/filmContactAngleFvPatchScalarField.C
+derivedFvPatchFields/mappedFilmPressure/mappedFilmPressureFvPatchScalarField.C
 
 filmGaussGrad/filmGaussGrads.C
 

diff --git a/...hermalFilm/derivedFvPatchFields/mappedFilmPressure/mappedFilmPressureFvPatchScalarField.C b/...hermalFilm/derivedFvPatchFields/mappedFilmPressure/mappedFilmPressureFvPatchScalarField.C
@@ -0,0 +1,145 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     | Website:  https://openfoam.org
+    \\  /    A nd           | Copyright (C) 2023 OpenFOAM Foundation
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+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 "mappedFilmPressureFvPatchScalarField.H"
+#include "volFields.H"
+#include "addToRunTimeSelectionTable.H"
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+Foam::mappedFilmPressureFvPatchScalarField::mappedFilmPressureFvPatchScalarField
+(
+    const fvPatch& p,
+    const DimensionedField<scalar, volMesh>& iF
+)
+:
+    zeroGradientFvPatchField<scalar>(p, iF),
+    mappedFvPatchField<scalar>(p, iF)
+{}
+
+
+Foam::mappedFilmPressureFvPatchScalarField::mappedFilmPressureFvPatchScalarField
+(
+    const fvPatch& p,
+    const DimensionedField<scalar, volMesh>& iF,
+    const dictionary& dict
+)
+:
+    zeroGradientFvPatchField<scalar>(p, iF, dict),
+    mappedFvPatchField<scalar>(p, iF, dict)
+{}
+
+
+Foam::mappedFilmPressureFvPatchScalarField::mappedFilmPressureFvPatchScalarField
+(
+    const mappedFilmPressureFvPatchScalarField& ptf,
+    const fvPatch& p,
+    const DimensionedField<scalar, volMesh>& iF,
+    const fvPatchFieldMapper& mapper
+)
+:
+    zeroGradientFvPatchField<scalar>(ptf, p, iF, mapper),
+    mappedFvPatchField<scalar>(ptf, p, iF, mapper)
+{}
+
+
+Foam::mappedFilmPressureFvPatchScalarField::mappedFilmPressureFvPatchScalarField
+(
+    const mappedFilmPressureFvPatchScalarField& ptf,
+    const DimensionedField<scalar, volMesh>& iF
+)
+:
+    zeroGradientFvPatchField<scalar>(ptf, iF),
+    mappedFvPatchField<scalar>(ptf, iF)
+{}
+
+
+// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
+
+void Foam::mappedFilmPressureFvPatchScalarField::map
+(
+    const fvPatchField<scalar>& ptf,
+    const fvPatchFieldMapper& mapper
+)
+{
+    zeroGradientFvPatchField<scalar>::map(ptf, mapper);
+    mappedFvPatchField<scalar>::clearOut();
+}
+
+
+void Foam::mappedFilmPressureFvPatchScalarField::reset
+(
+    const fvPatchField<scalar>& ptf
+)
+{
+    zeroGradientFvPatchField<scalar>::reset(ptf);
+    mappedFvPatchField<scalar>::clearOut();
+}
+
+
+void Foam::mappedFilmPressureFvPatchScalarField::updateCoeffs()
+{
+    if (this->updated())
+    {
+        return;
+    }
+
+    // Map the neighbouring fluid patch pressure field to this patch
+    this->operator==(this->mappedValues(this->nbrPatchField()));
+
+    // Map the patch pressure to the internal field
+    UIndirectList<scalar>
+    (
+        const_cast<Field<scalar>&>(this->primitiveField()),
+        this->patch().faceCells()
+    ) = *this;
+
+    zeroGradientFvPatchField<scalar>::updateCoeffs();
+}
+
+
+void Foam::mappedFilmPressureFvPatchScalarField::write(Ostream& os) const
+{
+    fvPatchField<scalar>::write(os);
+
+    mappedFvPatchField<scalar>::write(os);
+
+    writeEntry(os, "value", *this);
+}
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+    makePatchTypeField
+    (
+        fvPatchScalarField,
+        mappedFilmPressureFvPatchScalarField
+    );
+}
+
+
+// ************************************************************************* //
diff --git a/...hermalFilm/derivedFvPatchFields/mappedFilmPressure/mappedFilmPressureFvPatchScalarField.H b/...hermalFilm/derivedFvPatchFields/mappedFilmPressure/mappedFilmPressureFvPatchScalarField.H
@@ -0,0 +1,151 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     | Website:  https://openfoam.org
+    \\  /    A nd           | Copyright (C) 2023 OpenFOAM Foundation
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+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/>.
+
+Class
+    Foam::mappedFilmPressureFvPatchScalarField
+
+Description
+    Film pressure boundary condition which maps the neighbouring fluid patch
+    pressure to both the surface patch and internal film pressure field.
+
+SourceFiles
+    mappedFilmPressureFvPatchScalarField.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef mappedFilmPressureFvPatchScalarField_H
+#define mappedFilmPressureFvPatchScalarField_H
+
+#include "zeroGradientFvPatchFields.H"
+#include "mappedFvPatchField.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+
+/*---------------------------------------------------------------------------*\
+                   Class mappedFilmPressureFvPatchScalarField Declaration
+\*---------------------------------------------------------------------------*/
+
+class mappedFilmPressureFvPatchScalarField
+:
+    public zeroGradientFvPatchField<scalar>,
+    public mappedFvPatchField<scalar>
+{
+
+public:
+
+    //- Runtime type information
+    TypeName("mappedFilmPressure");
+
+
+    // Constructors
+
+        //- Construct from patch and internal field
+        mappedFilmPressureFvPatchScalarField
+        (
+            const fvPatch&,
+            const DimensionedField<scalar, volMesh>&
+        );
+
+        //- Construct from patch, internal field and dictionary
+        mappedFilmPressureFvPatchScalarField
+        (
+            const fvPatch&,
+            const DimensionedField<scalar, volMesh>&,
+            const dictionary&
+        );
+
+        //- Construct by mapping given mappedFilmPressureFvPatchScalarField
+        //  onto a new patch
+        mappedFilmPressureFvPatchScalarField
+        (
+            const mappedFilmPressureFvPatchScalarField&,
+            const fvPatch&,
+            const DimensionedField<scalar, volMesh>&,
+            const fvPatchFieldMapper&
+        );
+
+        //- Disallow copy without setting internal field reference
+        mappedFilmPressureFvPatchScalarField
+        (
+            const mappedFilmPressureFvPatchScalarField&
+        ) = delete;
+
+        //- Copy constructor setting internal field reference
+        mappedFilmPressureFvPatchScalarField
+        (
+            const mappedFilmPressureFvPatchScalarField&,
+            const DimensionedField<scalar, volMesh>&
+        );
+
+        //- Construct and return a clone setting internal field reference
+        virtual tmp<fvPatchField<scalar>> clone
+        (
+            const DimensionedField<scalar, volMesh>& iF
+        ) const
+        {
+            return tmp<fvPatchField<scalar>>
+            (
+                new mappedFilmPressureFvPatchScalarField(*this, iF)
+            );
+        }
+
+
+    // Member Functions
+
+        // Mapping functions
+
+            //- Map the given fvPatchField onto this fvPatchField
+            virtual void map
+            (
+                const fvPatchField<scalar>&,
+                const fvPatchFieldMapper&
+            );
+
+            //- Reset the fvPatchField to the given fvPatchField
+            //  Used for mesh to mesh mapping
+            virtual void reset(const fvPatchField<scalar>&);
+
+
+        // Evaluation functions
+
+            //- Update the coefficients associated with the patch field
+            virtual void updateCoeffs();
+
+
+        //- Write
+        virtual void write(Ostream&) const;
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //
diff --git a/applications/solvers/modules/isothermalFilm/isothermalFilm.C b/applications/solvers/modules/isothermalFilm/isothermalFilm.C
@@ -240,6 +240,7 @@ Foam::solvers::isothermalFilm::isothermalFilm
     thermo_(thermoPtr),
     thermo(thermo_()),
 
+    p(thermo.p()),
     rho(thermo.rho()),
 
     nHat

diff --git a/applications/solvers/modules/isothermalFilm/isothermalFilm.H b/applications/solvers/modules/isothermalFilm/isothermalFilm.H
@@ -98,6 +98,9 @@ protected:
         //- Reference to the fluid thermophysical properties
         fluidThermo& thermo;
 
+        //- The thermodynamic pressure field
+        volScalarField& p;
+
         //- The thermodynamic density field
         const volScalarField& rho;
 

diff --git a/applications/solvers/modules/isothermalFilm/momentumPredictor.C b/applications/solvers/modules/isothermalFilm/momentumPredictor.C
@@ -66,13 +66,10 @@ Foam::solvers::isothermalFilm::pc(const volScalarField& sigma) const
 Foam::tmp<Foam::volScalarField>
 Foam::solvers::isothermalFilm::pe() const
 {
-    // Currently there is no transfer of pressure from the adjacent fluid
-    return volScalarField::New
-    (
-        "pExternal",
-        mesh,
-        dimensionedScalar(dimPressure, 0)
-    );
+    // Update the pressure, mapping from the fluid region as required
+    p.correctBoundaryConditions();
+
+    return p;
 }
 
 

diff --git a/src/finiteVolume/Make/files b/src/finiteVolume/Make/files
@@ -192,6 +192,7 @@ $(derivedFvPatchFields)/inletOutlet/inletOutletFvPatchFields.C
 $(derivedFvPatchFields)/inletOutletTotalTemperature/inletOutletTotalTemperatureFvPatchScalarField.C
 $(derivedFvPatchFields)/mappedFlowRateVelocity/mappedFlowRateVelocityFvPatchVectorField.C
 $(derivedFvPatchFields)/mappedInternalValue/mappedInternalValueFvPatchFields.C
+$(derivedFvPatchFields)/mapped/mappedFvPatchFields.C
 $(derivedFvPatchFields)/mappedValue/mappedValueFvPatchFields.C
 $(derivedFvPatchFields)/mappedValueAndPatchInternalValue/mappedValueAndPatchInternalValueFvPatchFields.C
 $(derivedFvPatchFields)/mappedVelocityFlux/mappedVelocityFluxFvPatchField.C