reactingEulerFoam/interfacialModels/liftModels: wallDampedLift

New lift model supporting near-wall damping using the new
wallDampingModels.

e.g.

lift
(
    (air in water)
    {
        type            wallDamped;
        lift
        {
            type            constantCoefficient;
            Cl              0.5;
        }
        wallDamping
        {
            type            linear;
            Cd              0.5;
        }
    }
);

in which a linear near-wall damping function min(y/(Cd*d), 1) is applied to the constant
coefficient lift model.  Additional wall-damping functions will be added.

applications/solvers/multiphase/reactingEulerFoam/interfacialModels/Make/files

@@ -25,6 +25,7 @@ liftModels/constantLiftCoefficient/constantLiftCoefficient.C
 liftModels/Moraga/Moraga.C
 liftModels/LegendreMagnaudet/LegendreMagnaudet.C
 liftModels/TomiyamaLift/TomiyamaLift.C
+liftModels/wallDampedLift/wallDampedLift.C
 
 heatTransferModels/heatTransferModel/heatTransferModel.C
 heatTransferModels/heatTransferModel/newHeatTransferModel.C
@@ -61,4 +62,9 @@ aspectRatioModels/Wellek/Wellek.C
 
 wallDependentModel/wallDependentModel.C
 
+wallDampingModels/wallDampingModel/wallDampingModel.C
+wallDampingModels/wallDampingModel/newWallDampingModel.C
+wallDampingModels/noWallDamping/noWallDamping.C
+wallDampingModels/linear/linearWallDamping.C
+
 LIB = $(FOAM_LIBBIN)/libreactingEulerianInterfacialModels

applications/solvers/multiphase/reactingEulerFoam/interfacialModels/liftModels/wallDampedLift/wallDampedLift.C

@@ -0,0 +1,91 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2015 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 "wallDampedLift.H"
+#include "phasePair.H"
+#include "addToRunTimeSelectionTable.H"
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+namespace Foam
+{
+namespace liftModels
+{
+    defineTypeNameAndDebug(wallDamped, 0);
+    addToRunTimeSelectionTable(liftModel, wallDamped, dictionary);
+}
+}
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+Foam::liftModels::wallDamped::wallDamped
+(
+    const dictionary& dict,
+    const phasePair& pair
+)
+:
+    liftModel(dict, pair),
+    liftModel_(liftModel::New(dict.subDict("lift"), pair)),
+    wallDampingModel_
+    (
+        wallDampingModel::New(dict.subDict("wallDamping"), pair)
+    )
+{}
+
+
+// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
+
+Foam::liftModels::wallDamped::~wallDamped()
+{}
+
+
+// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
+
+Foam::tmp<Foam::volScalarField> Foam::liftModels::wallDamped::Cl() const
+{
+    return wallDampingModel_->damp(liftModel_->Cl());
+}
+
+
+Foam::tmp<Foam::volVectorField> Foam::liftModels::wallDamped::Fi() const
+{
+    return wallDampingModel_->damp(liftModel_->Fi());
+}
+
+
+Foam::tmp<Foam::volVectorField> Foam::liftModels::wallDamped::F() const
+{
+    return wallDampingModel_->damp(liftModel_->F());
+}
+
+
+Foam::tmp<Foam::surfaceScalarField> Foam::liftModels::wallDamped::Ff() const
+{
+    return wallDampingModel_->damp(liftModel_->Ff());
+}
+
+
+// ************************************************************************* //

applications/solvers/multiphase/reactingEulerFoam/interfacialModels/liftModels/wallDampedLift/wallDampedLift.H

@@ -0,0 +1,112 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2015 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::liftModels::wallDamped
+
+Description
+
+SourceFiles
+    wallDamped.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef wallDampedLift_H
+#define wallDampedLift_H
+
+#include "liftModel.H"
+#include "wallDampingModel.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+
+class phasePair;
+
+namespace liftModels
+{
+
+/*---------------------------------------------------------------------------*\
+                           Class wallDamped Declaration
+\*---------------------------------------------------------------------------*/
+
+class wallDamped
+:
+    public liftModel
+{
+    // Private data
+
+        //- The lift model to damp
+        autoPtr<liftModel> liftModel_;
+
+        //- The wall-damping model
+        autoPtr<wallDampingModel> wallDampingModel_;
+
+
+public:
+
+    //- Runtime type information
+    TypeName("wallDamped");
+
+
+    // Constructors
+
+        //- Construct from a dictionary and a phase pair
+        wallDamped
+        (
+            const dictionary& dict,
+            const phasePair& pair
+        );
+
+
+    //- Destructor
+    virtual ~wallDamped();
+
+
+    // Member Functions
+
+        //- Return lift coefficient
+        virtual tmp<volScalarField> Cl() const;
+
+        //- Return phase-intensive lift force
+        virtual tmp<volVectorField> Fi() const;
+
+        //- Return lift force
+        virtual tmp<volVectorField> F() const;
+
+        //- Return face lift force
+        virtual tmp<surfaceScalarField> Ff() const;
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace liftModels
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //

applications/solvers/multiphase/reactingEulerFoam/interfacialModels/wallDampingModels/linear/linearWallDamping.C

@@ -0,0 +1,108 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2015 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 "linearWallDamping.H"
+#include "phasePair.H"
+#include "surfaceInterpolate.H"
+#include "addToRunTimeSelectionTable.H"
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+namespace Foam
+{
+namespace wallDampingModels
+{
+    defineTypeNameAndDebug(linear, 0);
+    addToRunTimeSelectionTable
+    (
+        wallDampingModel,
+        linear,
+        dictionary
+    );
+}
+}
+
+
+// * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * * //
+
+Foam::tmp<Foam::volScalarField>
+Foam::wallDampingModels::linear::limiter() const
+{
+    return min(yWall()/(Cd_*pair_.dispersed().d()), 1.0);
+}
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+Foam::wallDampingModels::linear::linear
+(
+    const dictionary& dict,
+    const phasePair& pair
+)
+:
+    wallDampingModel(dict, pair),
+    Cd_("Cd", dimless, dict)
+{}
+
+
+// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
+
+Foam::wallDampingModels::linear::~linear()
+{}
+
+
+// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
+
+Foam::tmp<Foam::volScalarField>
+Foam::wallDampingModels::linear::damp
+(
+    const tmp<volScalarField>& F
+) const
+{
+    return limiter()*F;
+}
+
+
+Foam::tmp<Foam::volVectorField>
+Foam::wallDampingModels::linear::damp
+(
+    const tmp<volVectorField>& F
+) const
+{
+    return limiter()*F;
+}
+
+
+Foam::tmp<Foam::surfaceScalarField>
+Foam::wallDampingModels::linear::damp
+(
+    const tmp<surfaceScalarField>& Ff
+) const
+{
+    return fvc::interpolate(limiter())*Ff;
+}
+
+
+// ************************************************************************* //

applications/solvers/multiphase/reactingEulerFoam/interfacialModels/wallDampingModels/linear/linearWallDamping.H

@@ -0,0 +1,120 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2015 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::wallDampingModels::linear
+
+Description
+
+SourceFiles
+    linearWallDamping.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef linearWallDamping_H
+#define linearWallDamping_H
+
+#include "wallDampingModel.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+
+class phasePair;
+
+namespace wallDampingModels
+{
+
+/*---------------------------------------------------------------------------*\
+                           Class linear Declaration
+\*---------------------------------------------------------------------------*/
+
+class linear
+:
+    public wallDampingModel
+{
+    // Private data
+
+        //- Diameter coefficient
+        const dimensionedScalar Cd_;
+
+
+    // Private member functions
+
+        //- Return the force limiter field
+        tmp<volScalarField> limiter() const;
+
+
+public:
+
+    //- Runtime type information
+    TypeName("linear");
+
+
+    // Constructors
+
+        //- Construct from components
+        linear
+        (
+            const dictionary& dict,
+            const phasePair& pair
+        );
+
+
+    //- Destructor
+    virtual ~linear();
+
+
+    // Member Functions
+
+        //- Return damped coefficient
+        virtual tmp<volScalarField> damp
+        (
+            const tmp<volScalarField>&
+        ) const;
+
+        //- Return damped force
+        virtual tmp<volVectorField> damp
+        (
+            const tmp<volVectorField>&
+        ) const;
+
+        //- Return damped face force
+        virtual tmp<surfaceScalarField> damp
+        (
+            const tmp<surfaceScalarField>&
+        ) const;
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace wallDampingModels
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //

applications/solvers/multiphase/reactingEulerFoam/interfacialModels/wallDampingModels/noWallDamping/noWallDamping.C

@@ -0,0 +1,97 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2015 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 "noWallDamping.H"
+#include "phasePair.H"
+#include "addToRunTimeSelectionTable.H"
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+namespace Foam
+{
+namespace wallDampingModels
+{
+    defineTypeNameAndDebug(noWallDamping, 0);
+    addToRunTimeSelectionTable
+    (
+        wallDampingModel,
+        noWallDamping,
+        dictionary
+    );
+}
+}
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+Foam::wallDampingModels::noWallDamping::noWallDamping
+(
+    const dictionary& dict,
+    const phasePair& pair
+)
+:
+    wallDampingModel(dict, pair)
+{}
+
+
+// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
+
+Foam::wallDampingModels::noWallDamping::~noWallDamping()
+{}
+
+
+// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
+
+Foam::tmp<Foam::volScalarField>
+Foam::wallDampingModels::noWallDamping::damp
+(
+    const tmp<volScalarField>& Cl
+) const
+{
+    return Cl;
+}
+
+
+Foam::tmp<Foam::volVectorField>
+Foam::wallDampingModels::noWallDamping::damp
+(
+    const tmp<volVectorField>& F
+) const
+{
+    return F;
+}
+
+
+Foam::tmp<Foam::surfaceScalarField>
+Foam::wallDampingModels::noWallDamping::damp
+(
+    const tmp<surfaceScalarField>& Ff
+) const
+{
+    return Ff;
+}
+
+
+// ************************************************************************* //

applications/solvers/multiphase/reactingEulerFoam/interfacialModels/wallDampingModels/noWallDamping/noWallDamping.H

@@ -0,0 +1,108 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2015 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::wallDampingModels::noWallDamping
+
+Description
+
+SourceFiles
+    noWallDamping.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef noWallDamping_H
+#define noWallDamping_H
+
+#include "wallDampingModel.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+
+class phasePair;
+
+namespace wallDampingModels
+{
+
+/*---------------------------------------------------------------------------*\
+                           Class noWallDamping Declaration
+\*---------------------------------------------------------------------------*/
+
+class noWallDamping
+:
+    public wallDampingModel
+{
+public:
+
+    //- Runtime type information
+    TypeName("none");
+
+
+    // Constructors
+
+        //- Construct from components
+        noWallDamping
+        (
+            const dictionary& dict,
+            const phasePair& pair
+        );
+
+
+    //- Destructor
+    virtual ~noWallDamping();
+
+
+    // Member Functions
+
+        //- Return damped coefficient
+        virtual tmp<volScalarField> damp
+        (
+            const tmp<volScalarField>&
+        ) const;
+
+        //- Return damped force
+        virtual tmp<volVectorField> damp
+        (
+            const tmp<volVectorField>&
+        ) const;
+
+        //- Return damped face force
+        virtual tmp<surfaceScalarField> damp
+        (
+            const tmp<surfaceScalarField>&
+        ) const;
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace wallDampingModels
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //

applications/solvers/multiphase/reactingEulerFoam/interfacialModels/wallDampingModels/wallDampingModel/newWallDampingModel.C

@@ -0,0 +1,59 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2015 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 "wallDampingModel.H"
+#include "phasePair.H"
+
+// * * * * * * * * * * * * * * * * Selector  * * * * * * * * * * * * * * * * //
+
+Foam::autoPtr<Foam::wallDampingModel> Foam::wallDampingModel::New
+(
+    const dictionary& dict,
+    const phasePair& pair
+)
+{
+    word wallDampingModelType(dict.lookup("type"));
+
+    Info<< "Selecting wallDampingModel for "
+        << pair << ": " << wallDampingModelType << endl;
+
+    dictionaryConstructorTable::iterator cstrIter =
+        dictionaryConstructorTablePtr_->find(wallDampingModelType);
+
+    if (cstrIter == dictionaryConstructorTablePtr_->end())
+    {
+        FatalErrorInFunction
+            << "Unknown wallDampingModelType type "
+            << wallDampingModelType << endl << endl
+            << "Valid wallDampingModel types are : " << endl
+            << dictionaryConstructorTablePtr_->sortedToc()
+            << exit(FatalError);
+    }
+
+    return cstrIter()(dict, pair);
+}
+
+
+// ************************************************************************* //

applications/solvers/multiphase/reactingEulerFoam/interfacialModels/wallDampingModels/wallDampingModel/wallDampingModel.C

@@ -0,0 +1,59 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2015 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 "wallDampingModel.H"
+#include "phasePair.H"
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+namespace Foam
+{
+    defineTypeNameAndDebug(wallDampingModel, 0);
+    defineRunTimeSelectionTable(wallDampingModel, dictionary);
+}
+
+const Foam::dimensionSet Foam::wallDampingModel::dimF(1, -2, -2, 0, 0);
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+Foam::wallDampingModel::wallDampingModel
+(
+    const dictionary& dict,
+    const phasePair& pair
+)
+:
+    wallDependentModel(pair.phase1().mesh()),
+    pair_(pair)
+{}
+
+
+// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
+
+Foam::wallDampingModel::~wallDampingModel()
+{}
+
+
+// ************************************************************************* //

applications/solvers/multiphase/reactingEulerFoam/interfacialModels/wallDampingModels/wallDampingModel/wallDampingModel.H

@@ -0,0 +1,146 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2015 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::wallDampingModel
+
+Description
+
+SourceFiles
+    wallDampingModel.C
+    newWallDampingModel.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef wallDampingModel_H
+#define wallDampingModel_H
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#include "wallDependentModel.H"
+#include "volFields.H"
+#include "dictionary.H"
+#include "runTimeSelectionTables.H"
+
+namespace Foam
+{
+
+class phasePair;
+
+/*---------------------------------------------------------------------------*\
+                      Class wallDampingModel Declaration
+\*---------------------------------------------------------------------------*/
+
+class wallDampingModel
+:
+    public wallDependentModel
+{
+protected:
+
+    // Protected data
+
+        //- Phase pair
+        const phasePair& pair_;
+
+
+public:
+
+    //- Runtime type information
+    TypeName("wallDampingModel");
+
+
+    // Declare runtime construction
+
+        declareRunTimeSelectionTable
+        (
+            autoPtr,
+            wallDampingModel,
+            dictionary,
+            (
+                const dictionary& dict,
+                const phasePair& pair
+            ),
+            (dict, pair)
+        );
+
+
+    // Static data members
+
+        //- Coefficient dimensions
+        static const dimensionSet dimF;
+
+
+    // Constructors
+
+        //- Construct from components
+        wallDampingModel
+        (
+            const dictionary& dict,
+            const phasePair& pair
+        );
+
+
+    //- Destructor
+    virtual ~wallDampingModel();
+
+
+    // Selectors
+
+        static autoPtr<wallDampingModel> New
+        (
+            const dictionary& dict,
+            const phasePair& pair
+        );
+
+
+    // Member Functions
+
+        //- Return damped coefficient
+        virtual tmp<volScalarField> damp
+        (
+            const tmp<volScalarField>&
+        ) const = 0;
+
+        //- Return damped force
+        virtual tmp<volVectorField> damp
+        (
+            const tmp<volVectorField>&
+        ) const = 0;
+
+        //- Return damped face force
+        virtual tmp<surfaceScalarField> damp
+        (
+            const tmp<surfaceScalarField>&
+        ) const = 0;
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //