surfaceFilmModels::function1Viscosity: New viscosity modifier

Description
    The Foam::Function1 temperature-dependent viscosity model multiplies the
    viscosity of a base model by a Function1 temperature function.

src/regionModels/surfaceFilmModels/Make/files

@@ -65,6 +65,7 @@ $(THERMOMODELS)/filmViscosityModel/constantViscosity/constantViscosity.C
 $(THERMOMODELS)/filmViscosityModel/liquidViscosity/liquidViscosity.C
 $(THERMOMODELS)/filmViscosityModel/thixotropicViscosity/thixotropicViscosity.C
 $(THERMOMODELS)/filmViscosityModel/ArrheniusViscosity/ArrheniusViscosity.C
+$(THERMOMODELS)/filmViscosityModel/function1Viscosity/function1Viscosity.C
 
 
 /* Boundary conditions */

src/regionModels/surfaceFilmModels/submodels/thermo/filmViscosityModel/function1Viscosity/function1Viscosity.C

@@ -0,0 +1,94 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2017 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 "function1Viscosity.H"
+#include "addToRunTimeSelectionTable.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+namespace regionModels
+{
+namespace surfaceFilmModels
+{
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+defineTypeNameAndDebug(function1Viscosity, 0);
+
+addToRunTimeSelectionTable
+(
+    filmViscosityModel,
+    function1Viscosity,
+    dictionary
+);
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+function1Viscosity::function1Viscosity
+(
+    surfaceFilmModel& film,
+    const dictionary& dict,
+    volScalarField& mu
+)
+:
+    filmViscosityModel(typeName, film, dict, mu),
+    viscosity_(filmViscosityModel::New(film, coeffDict_, mu)),
+    function_
+    (
+        Function1<scalar>::New("function", coeffDict_)
+    )
+{}
+
+
+// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
+
+function1Viscosity::~function1Viscosity()
+{}
+
+
+// * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //
+
+void function1Viscosity::correct
+(
+    const volScalarField& p,
+    const volScalarField& T
+)
+{
+    viscosity_->correct(p, T);
+    mu_.primitiveFieldRef() *= function_->value(T)();
+    mu_.correctBoundaryConditions();
+}
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace surfaceFilmModels
+} // End namespace regionModels
+} // End namespace Foam
+
+// ************************************************************************* //

src/regionModels/surfaceFilmModels/submodels/thermo/filmViscosityModel/function1Viscosity/function1Viscosity.H

@@ -0,0 +1,121 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2017 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::regionModels::surfaceFilmModels::function1Viscosity
+
+Description
+    The Foam::Function1 temperature-dependent viscosity model multiplies the
+    viscosity of a base model by a Function1 temperature function.
+
+SourceFiles
+    function1Viscosity.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef function1Viscosity_H
+#define function1Viscosity_H
+
+#include "filmViscosityModel.H"
+#include "Function1.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+namespace regionModels
+{
+namespace surfaceFilmModels
+{
+
+/*---------------------------------------------------------------------------*\
+                    Class function1Viscosity Declaration
+\*---------------------------------------------------------------------------*/
+
+class function1Viscosity
+:
+    public filmViscosityModel
+{
+    // Private member functions
+
+        //- Disallow default bitwise copy construct
+        function1Viscosity(const function1Viscosity&);
+
+        //- Disallow default bitwise assignment
+        void operator=(const function1Viscosity&);
+
+
+protected:
+
+    // Protected data
+
+        //- Base viscosity model
+        autoPtr<filmViscosityModel> viscosity_;
+
+        //- Viscosity factor as a function of temperature
+        autoPtr<Function1<scalar>> function_;
+
+
+public:
+
+    //- Runtime type information
+    TypeName("function1");
+
+
+    // Constructors
+
+        //- Construct from surface film model
+        function1Viscosity
+        (
+            surfaceFilmModel& film,
+            const dictionary& dict,
+            volScalarField& mu
+        );
+
+
+    //- Destructor
+    virtual ~function1Viscosity();
+
+
+    // Member Functions
+
+        //- Correct
+        virtual void correct
+        (
+            const volScalarField& p,
+            const volScalarField& T
+        );
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace surfaceFilmModels
+} // End namespace regionModels
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //