ENH: new SRFrhoSimpleFoam solver

applications/solvers/compressible/rhoSimpleFoam/SRFrhoSimpleFoam/EEqn.H

@@ -0,0 +1,26 @@
+{
+    volScalarField& he = thermo.he();
+
+    fvScalarMatrix EEqn
+    (
+        fvm::div(phi, he)
+      + (
+            he.name() == "e"
+          ? fvc::div(phi, volScalarField("Ekp", 0.5*magSqr(U) + p/rho))
+          : fvc::div(phi, volScalarField("K", 0.5*magSqr(U)))
+        )
+      - fvm::laplacian(turbulence->alphaEff(), he)
+     ==
+        fvOptions(rho, he)
+    );
+
+    EEqn.relax();
+
+    fvOptions.constrain(EEqn);
+
+    EEqn.solve();
+
+    fvOptions.correct(he);
+
+    thermo.correct();
+}

applications/solvers/compressible/rhoSimpleFoam/SRFrhoSimpleFoam/Make/files

@@ -0,0 +1,3 @@
+SRFrhoSimpleFoam.C
+
+EXE = $(FOAM_APPBIN)/SRFrhoSimpleFoam

applications/solvers/compressible/rhoSimpleFoam/SRFrhoSimpleFoam/Make/options

@@ -0,0 +1,21 @@
+EXE_INC = \
+    -I$(LIB_SRC)/finiteVolume/cfdTools \
+    -I$(LIB_SRC)/finiteVolume/lnInclude \
+    -I$(LIB_SRC)/meshTools/lnInclude \
+    -I$(LIB_SRC)/sampling/lnInclude \
+    -I$(LIB_SRC)/transportModels/compressible/lnInclude \
+    -I$(LIB_SRC)/thermophysicalModels/basic/lnInclude \
+    -I$(LIB_SRC)/TurbulenceModels/turbulenceModels/lnInclude \
+    -I$(LIB_SRC)/TurbulenceModels/compressible/lnInclude \
+
+EXE_LIBS = \
+    -lfiniteVolume \
+    -lfvOptions \
+    -lmeshTools \
+    -lsampling \
+    -lcompressibleTransportModels \
+    -lfluidThermophysicalModels \
+    -lspecie \
+    -lturbulenceModels \
+    -lcompressibleTurbulenceModels \
+    -latmosphericModels

applications/solvers/compressible/rhoSimpleFoam/SRFrhoSimpleFoam/SRFrhoSimpleFoam.C

@@ -0,0 +1,99 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | www.openfoam.com
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+    Copyright (C) 2011-2017 OpenFOAM Foundation
+-------------------------------------------------------------------------------
+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/>.
+
+Application
+    SRFSimpleFoam
+
+Group
+    grpIncompressibleSolvers
+
+Description
+    Steady-state solver for incompressible, turbulent flow of non-Newtonian
+    fluids in a single rotating frame.
+
+\*---------------------------------------------------------------------------*/
+
+#include "fvCFD.H"
+#include "fluidThermo.H"
+#include "turbulentFluidThermoModel.H"
+#include "simpleControl.H"
+#include "pressureControl.H"
+#include "fvOptions.H"
+#include "SRFModel.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+int main(int argc, char *argv[])
+{
+    argList::addNote
+    (
+        "Steady-state solver for compressible, turbulent flow"
+        " of non-Newtonian fluids in a single rotating frame."
+    );
+
+    #include "postProcess.H"
+
+    #include "addCheckCaseOptions.H"
+    #include "setRootCaseLists.H"
+    #include "createTime.H"
+    #include "createMesh.H"
+    #include "createControl.H"
+    #include "createFields.H"
+    #include "createFieldRefs.H"
+    #include "initContinuityErrs.H"
+
+    turbulence->validate();
+
+    // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+    Info<< "\nStarting time loop\n" << endl;
+
+    while (simple.loop())
+    {
+        Info<< "Time = " << runTime.timeName() << nl << endl;
+
+        // --- Pressure-velocity SIMPLE corrector
+        {
+            #include "UrelEqn.H"
+            #include "EEqn.H"
+            #include "pEqn.H"
+        }
+
+        U = Urel + SRF->U();
+
+        turbulence->correct();
+
+        runTime.write();
+
+        runTime.printExecutionTime(Info);
+    }
+
+    Info<< "End\n" << endl;
+
+    return 0;
+}
+
+
+// ************************************************************************* //

applications/solvers/compressible/rhoSimpleFoam/SRFrhoSimpleFoam/UrelEqn.H

@@ -0,0 +1,22 @@
+    // Relative momentum predictor
+
+    tmp<fvVectorMatrix> tUrelEqn
+    (
+        fvm::div(phi, Urel)
+      + turbulence->divDevRhoReff(Urel)
+      + rho*SRF->Su()
+     ==
+        fvOptions(rho, Urel)
+    );
+    fvVectorMatrix& UrelEqn = tUrelEqn.ref();
+
+    UrelEqn.relax();
+
+    fvOptions.constrain(UrelEqn);
+
+    if (simple.momentumPredictor())
+    {
+        solve(UrelEqn == -fvc::grad(p));
+
+        fvOptions.correct(Urel);
+    }

applications/solvers/compressible/rhoSimpleFoam/SRFrhoSimpleFoam/createFieldRefs.H

@@ -0,0 +1 @@
+const volScalarField& psi = thermo.psi();

applications/solvers/compressible/rhoSimpleFoam/SRFrhoSimpleFoam/createFields.H

@@ -0,0 +1,89 @@
+Info<< "Reading thermophysical properties\n" << endl;
+
+autoPtr<fluidThermo> pThermo
+(
+    fluidThermo::New(mesh)
+);
+fluidThermo& thermo = pThermo();
+thermo.validate(args.executable(), "h", "e");
+
+volScalarField& p = thermo.p();
+
+volScalarField rho
+(
+    IOobject
+    (
+        "rho",
+        runTime.timeName(),
+        mesh,
+        IOobject::READ_IF_PRESENT,
+        IOobject::AUTO_WRITE
+    ),
+    thermo.rho()
+);
+
+Info<< "Reading field Urel\n" << endl;
+volVectorField Urel
+(
+    IOobject
+    (
+        "Urel",
+        runTime.timeName(),
+        mesh,
+        IOobject::MUST_READ,
+        IOobject::AUTO_WRITE
+    ),
+    mesh
+);
+
+Info<< "Reading/calculating face flux field phi\n" << endl;
+surfaceScalarField phi
+(
+    IOobject
+    (
+        "phi",
+        runTime.timeName(),
+        mesh,
+        IOobject::READ_IF_PRESENT,
+        IOobject::AUTO_WRITE
+    ),
+    linearInterpolate(rho*Urel) & mesh.Sf()
+);
+
+pressureControl pressureControl(p, rho, simple.dict());
+
+mesh.setFluxRequired(p.name());
+
+Info<< "Creating SRF model\n" << endl;
+autoPtr<SRF::SRFModel> SRF(SRF::SRFModel::New(Urel));
+
+// Construct the absolute velocity
+volVectorField U
+(
+    IOobject
+    (
+        "U",
+        runTime.timeName(),
+        mesh,
+        IOobject::NO_READ,
+        IOobject::AUTO_WRITE
+    ),
+    Urel + SRF->U()
+);
+
+
+Info<< "Creating turbulence model\n" << endl;
+autoPtr<compressible::turbulenceModel> turbulence
+(
+    compressible::turbulenceModel::New
+    (
+        rho,
+        U,
+        phi,
+        thermo
+    )
+);
+
+dimensionedScalar initialMass = fvc::domainIntegrate(rho);
+
+#include "createFvOptions.H"

applications/solvers/compressible/rhoSimpleFoam/SRFrhoSimpleFoam/pEqn.H

@@ -0,0 +1,109 @@
+volScalarField rAUrel(1.0/UrelEqn.A());
+surfaceScalarField rhorAUrelf("rhorAUf", fvc::interpolate(rho*rAUrel));
+volVectorField HbyA(constrainHbyA(rAUrel*UrelEqn.H(), Urel, p));
+tUrelEqn.clear();
+
+bool closedVolume = false;
+
+surfaceScalarField phiHbyA("phiHbyA", fvc::interpolate(rho)*fvc::flux(HbyA));
+
+// Update the pressure BCs to ensure flux consistency
+constrainPressure(p, rho, Urel, phiHbyA, rhorAUrelf);
+
+if (simple.transonic())
+{
+    surfaceScalarField phid
+    (
+        "phid",
+        (fvc::interpolate(psi)/fvc::interpolate(rho))*phiHbyA
+    );
+
+    phiHbyA -= fvc::interpolate(psi*p)*phiHbyA/fvc::interpolate(rho);
+
+    while (simple.correctNonOrthogonal())
+    {
+        fvScalarMatrix pEqn
+        (
+            fvc::div(phiHbyA)
+          + fvm::div(phid, p)
+          - fvm::laplacian(rhorAUrelf, p)
+          ==
+            fvOptions(psi, p, rho.name())
+        );
+
+        // Relax the pressure equation to ensure diagonal-dominance
+        pEqn.relax();
+
+        pEqn.setReference
+        (
+            pressureControl.refCell(),
+            pressureControl.refValue()
+        );
+
+        pEqn.solve();
+
+        if (simple.finalNonOrthogonalIter())
+        {
+            phi = phiHbyA + pEqn.flux();
+        }
+    }
+}
+else
+{
+    closedVolume = adjustPhi(phiHbyA, Urel, p);
+
+    while (simple.correctNonOrthogonal())
+    {
+        fvScalarMatrix pEqn
+        (
+            fvc::div(phiHbyA)
+          - fvm::laplacian(rhorAUrelf, p)
+          ==
+            fvOptions(psi, p, rho.name())
+        );
+
+        pEqn.setReference
+        (
+            pressureControl.refCell(),
+            pressureControl.refValue()
+        );
+
+        pEqn.solve();
+
+        if (simple.finalNonOrthogonalIter())
+        {
+            phi = phiHbyA + pEqn.flux();
+        }
+    }
+}
+
+#include "incompressible/continuityErrs.H"
+
+// Explicitly relax pressure for momentum corrector
+p.relax();
+
+Urel = HbyA - rAUrel*fvc::grad(p);
+Urel.correctBoundaryConditions();
+fvOptions.correct(Urel);
+
+bool pLimited = pressureControl.limit(p);
+
+// For closed-volume cases adjust the pressure and density levels
+// to obey overall mass continuity
+if (closedVolume)
+{
+    p += (initialMass - fvc::domainIntegrate(psi*p))
+        /fvc::domainIntegrate(psi);
+}
+
+if (pLimited || closedVolume)
+{
+    p.correctBoundaryConditions();
+}
+
+rho = thermo.rho();
+
+if (!simple.transonic())
+{
+    rho.relax();
+}

src/finiteVolume/cfdTools/general/SRF/SRFModel/SRFModel/SRFModel.C

@@ -6,6 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2017 OpenFOAM Foundation
+    Copyright (C) 2021 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -63,14 +64,7 @@ Foam::SRF::SRFModel::SRFModel
     mesh_(Urel_.mesh()),
     origin_("origin", dimLength, get<vector>("origin")),
     axis_(normalised(get<vector>("axis"))),
-    SRFModelCoeffs_(optionalSubDict(type + "Coeffs")),
+    SRFModelCoeffs_(optionalSubDict(type + "Coeffs"))
-    omega_(dimensionedVector("omega", dimless/dimTime, Zero))
-{}
-
-
-// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
-
-Foam::SRF::SRFModel::~SRFModel()
 {}
 
 
@@ -109,29 +103,20 @@ const Foam::vector& Foam::SRF::SRFModel::axis() const
 }
 
 
-const Foam::dimensionedVector& Foam::SRF::SRFModel::omega() const
-{
-    return omega_;
-}
-
-
 Foam::tmp<Foam::DimensionedField<Foam::vector, Foam::volMesh>>
 Foam::SRF::SRFModel::Fcoriolis() const
 {
-    return tmp<volVectorField::Internal>
+    return tmp<DimensionedField<vector, Foam::volMesh>>::New
     (
-        new volVectorField::Internal
+        IOobject
         (
-            IOobject
+            "Fcoriolis",
-            (
+            mesh_.time().timeName(),
-                "Fcoriolis",
+            mesh_,
-                mesh_.time().timeName(),
+            IOobject::NO_READ,
-                mesh_,
+            IOobject::NO_WRITE
-                IOobject::NO_READ,
+        ),
-                IOobject::NO_WRITE
+        2.0*omega() ^ Urel_
-            ),
-            2.0*omega_ ^ Urel_
-        )
     );
 }
 
@@ -139,20 +124,19 @@ Foam::SRF::SRFModel::Fcoriolis() const
 Foam::tmp<Foam::DimensionedField<Foam::vector, Foam::volMesh>>
 Foam::SRF::SRFModel::Fcentrifugal() const
 {
-    return tmp<volVectorField::Internal>
+    const dimensionedVector omega = this->omega();
+
+    return tmp<DimensionedField<vector, Foam::volMesh>>::New
     (
-        new volVectorField::Internal
+        IOobject
         (
-            IOobject
+            "Fcentrifugal",
-            (
+            mesh_.time().timeName(),
-                "Fcentrifugal",
+            mesh_,
-                mesh_.time().timeName(),
+            IOobject::NO_READ,
-                mesh_,
+            IOobject::NO_WRITE
-                IOobject::NO_READ,
+        ),
-                IOobject::NO_WRITE
+        omega ^ (omega ^ (mesh_.C() - origin_))
-            ),
-            omega_ ^ (omega_ ^ (mesh_.C() - origin_))
-        )
     );
 }
 
@@ -170,7 +154,7 @@ Foam::vectorField Foam::SRF::SRFModel::velocity
 ) const
 {
     tmp<vectorField> tfld =
-        omega_.value()
+        omega().value()
       ^ (
             (positions - origin_.value())
           - axis_*(axis_ & (positions - origin_.value()))
@@ -182,21 +166,18 @@ Foam::vectorField Foam::SRF::SRFModel::velocity
 
 Foam::tmp<Foam::volVectorField> Foam::SRF::SRFModel::U() const
 {
-    return tmp<volVectorField>
+    return tmp<volVectorField>::New
     (
-        new volVectorField
+        IOobject
         (
-            IOobject
+            "Usrf",
-            (
+            mesh_.time().timeName(),
-                "Usrf",
+            mesh_,
-                mesh_.time().timeName(),
+            IOobject::NO_READ,
-                mesh_,
+            IOobject::NO_WRITE
-                IOobject::NO_READ,
+        ),
-                IOobject::NO_WRITE
+        omega()
-            ),
+      ^ ((mesh_.C() - origin_) - axis_*(axis_ & (mesh_.C() - origin_)))
-            omega_
-          ^ ((mesh_.C() - origin_) - axis_*(axis_ & (mesh_.C() - origin_)))
-        )
     );
 }
 
@@ -205,21 +186,18 @@ Foam::tmp<Foam::volVectorField> Foam::SRF::SRFModel::Uabs() const
 {
     tmp<volVectorField> Usrf = U();
 
-    tmp<volVectorField> tUabs
+    auto tUabs = tmp<volVectorField>::New
     (
-        new volVectorField
+        IOobject
         (
-            IOobject
+            "Uabs",
-            (
+            mesh_.time().timeName(),
-                "Uabs",
+            mesh_,
-                mesh_.time().timeName(),
+            IOobject::NO_READ,
-                mesh_,
+            IOobject::NO_WRITE,
-                IOobject::NO_READ,
+            false
-                IOobject::NO_WRITE,
+        ),
-                false
+        Usrf
-            ),
-            Usrf
-        )
     );
 
     volVectorField& Uabs = tUabs.ref();

src/finiteVolume/cfdTools/general/SRF/SRFModel/SRFModel/SRFModel.H

@@ -6,6 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
+    Copyright (C) 2021 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -50,6 +51,7 @@ SourceFiles
 #include "fvMesh.H"
 #include "volFields.H"
 #include "vectorField.H"
+#include "Function1.H"
 
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
@@ -86,9 +88,6 @@ protected:
         //- SRF model coefficients dictionary
         dictionary SRFModelCoeffs_;
 
-        //- Angular velocity of the frame (rad/s)
-        dimensionedVector omega_;
-
 
 private:
 
@@ -141,7 +140,7 @@ public:
 
 
     //- Destructor
-    virtual ~SRFModel();
+    virtual ~SRFModel() = default;
 
 
     // Member Functions
@@ -154,15 +153,15 @@ public:
 
         // Access
 
+            //- Return the angular velocity field [rad/s]
+            virtual dimensionedVector omega() const = 0;
+
             //- Return the origin of rotation
             const dimensionedVector& origin() const;
 
             //- Return the axis of rotation
             const vector& axis() const;
 
-            //- Return the angular velocity field [rad/s]
-            const dimensionedVector& omega() const;
-
             //- Return the coriolis force
             tmp<volVectorField::Internal> Fcoriolis() const;
 

src/finiteVolume/cfdTools/general/SRF/SRFModel/rpm/rpm.C

@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011 OpenFOAM Foundation
-    Copyright (C) 2018 OpenCFD Ltd.
+    Copyright (C) 2018-2021 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -47,16 +47,14 @@ namespace Foam
     }
 }
 
+
 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
 Foam::SRF::rpm::rpm(const volVectorField& U)
 :
     SRFModel(typeName, U),
-    rpm_(SRFModelCoeffs_.get<scalar>("rpm"))
+    rpmPtr_(Function1<scalar>::New("rpm", SRFModelCoeffs_))
-{
+{}
-    // The angular velocity
-    omega_.value() = axis_*rpmToRads(rpm_);
-}
 
 
 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
@@ -65,9 +63,7 @@ bool Foam::SRF::rpm::read()
 {
     if (SRFModel::read())
     {
-        SRFModelCoeffs_.readEntry("rpm", rpm_);
+        rpmPtr_.reset(Function1<scalar>::New("rpm", SRFModelCoeffs_));
-
-        omega_.value() = axis_*rpmToRads(rpm_);
 
         return true;
     }
@@ -76,4 +72,14 @@ bool Foam::SRF::rpm::read()
 }
 
 
+Foam::dimensionedVector Foam::SRF::rpm::omega() const
+{
+    const scalar t = this->db().time().timeOutputValue();
+    const scalar rpm = rpmPtr_->value(t);
+
+    return dimensionedVector("omega", dimless/dimTime, axis_*rpmToRads(rpm));
+}
+
+
+
 // ************************************************************************* //

src/finiteVolume/cfdTools/general/SRF/SRFModel/rpm/rpm.H

@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011 OpenFOAM Foundation
-    Copyright (C) 2018 OpenCFD Ltd.
+    Copyright (C) 2018-2021 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -40,6 +40,7 @@ SourceFiles
 #define SRF_rpm_H
 
 #include "SRFModel.H"
+#include "Function1.H"
 
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
@@ -60,7 +61,7 @@ class rpm
     // Private data
 
         //- Revolutions per minute
-        scalar rpm_;
+        autoPtr<Function1<scalar>> rpmPtr_;
 
 
     // Private Member Functions
@@ -85,13 +86,16 @@ public:
 
 
     //- Destructor
-    ~rpm() = default;
+    virtual ~rpm() = default;
 
 
     // Member functions
 
         //- Read coefficients
         bool read();
+
+        //- Return the angular velocity field [rad/s]
+        virtual dimensionedVector omega() const;
 };
 
 

src/finiteVolume/cfdTools/general/SRF/derivedFvPatchFields/SRFVelocityFvPatchVectorField/SRFVelocityFvPatchVectorField.C

@@ -41,7 +41,8 @@ Foam::SRFVelocityFvPatchVectorField::SRFVelocityFvPatchVectorField
 :
     fixedValueFvPatchVectorField(p, iF),
     relative_(false),
-    inletValue_(p.size(), Zero)
+    inletValue_(p.size(), Zero),
+    refValuePtr_(fvPatchVectorField::New("refValue", p, iF))
 {}
 
 
@@ -55,8 +56,15 @@ Foam::SRFVelocityFvPatchVectorField::SRFVelocityFvPatchVectorField
 :
     fixedValueFvPatchVectorField(ptf, p, iF, mapper),
     relative_(ptf.relative_),
-    inletValue_(ptf.inletValue_, mapper)
+    inletValue_(ptf.inletValue_, mapper),
-{}
+    refValuePtr_()
+{
+    if (ptf.refValuePtr_.valid())
+    {
+        refValuePtr_ =
+            fvPatchVectorField::New(ptf.refValuePtr_(), p, iF, mapper);
+    }
+}
 
 
 Foam::SRFVelocityFvPatchVectorField::SRFVelocityFvPatchVectorField
@@ -68,8 +76,22 @@ Foam::SRFVelocityFvPatchVectorField::SRFVelocityFvPatchVectorField
 :
     fixedValueFvPatchVectorField(p, iF, dict),
     relative_(dict.get<Switch>("relative")),
-    inletValue_("inletValue", dict, p.size())
+    inletValue_(p.size(), Zero),
-{}
+    refValuePtr_()
+{
+    if (dict.found("inletValue"))
+    {
+        inletValue_ = vectorField("inletValue", dict, p.size());
+    }
+    else
+    {
+        if (dict.found("refValue"))
+        {
+            refValuePtr_ =
+                fvPatchVectorField::New(p, iF, dict.subDict("refValue"));
+        }
+    }
+}
 
 
 Foam::SRFVelocityFvPatchVectorField::SRFVelocityFvPatchVectorField
@@ -79,8 +101,14 @@ Foam::SRFVelocityFvPatchVectorField::SRFVelocityFvPatchVectorField
 :
     fixedValueFvPatchVectorField(srfvpvf),
     relative_(srfvpvf.relative_),
-    inletValue_(srfvpvf.inletValue_)
+    inletValue_(srfvpvf.inletValue_),
-{}
+    refValuePtr_()
+{
+    if (srfvpvf.refValuePtr_.valid())
+    {
+        refValuePtr_ = srfvpvf.refValuePtr_().clone();
+    }
+}
 
 
 Foam::SRFVelocityFvPatchVectorField::SRFVelocityFvPatchVectorField
@@ -91,8 +119,14 @@ Foam::SRFVelocityFvPatchVectorField::SRFVelocityFvPatchVectorField
 :
     fixedValueFvPatchVectorField(srfvpvf, iF),
     relative_(srfvpvf.relative_),
-    inletValue_(srfvpvf.inletValue_)
+    inletValue_(srfvpvf.inletValue_),
-{}
+    refValuePtr_()
+{
+    if (srfvpvf.refValuePtr_.valid())
+    {
+        refValuePtr_ = srfvpvf.refValuePtr_().clone();
+    }
+}
 
 
 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
@@ -104,6 +138,11 @@ void Foam::SRFVelocityFvPatchVectorField::autoMap
 {
     vectorField::autoMap(m);
     inletValue_.autoMap(m);
+
+    if (refValuePtr_.valid())
+    {
+        refValuePtr_->autoMap(m);
+    }
 }
 
 
@@ -115,10 +154,14 @@ void Foam::SRFVelocityFvPatchVectorField::rmap
 {
     fixedValueFvPatchVectorField::rmap(ptf, addr);
 
-    const SRFVelocityFvPatchVectorField& tiptf =
+    const auto& srfptf = refCast<const SRFVelocityFvPatchVectorField>(ptf);
-        refCast<const SRFVelocityFvPatchVectorField>(ptf);
 
-    inletValue_.rmap(tiptf.inletValue_, addr);
+    inletValue_.rmap(srfptf.inletValue_, addr);
+
+    if (srfptf.refValuePtr_.valid())
+    {
+        refValuePtr_->rmap(srfptf.refValuePtr_(), addr);
+    }
 }
 
 
@@ -133,19 +176,34 @@ void Foam::SRFVelocityFvPatchVectorField::updateCoeffs()
     if (!relative_)
     {
         // Get reference to the SRF model
-        const SRF::SRFModel& srf =
+        const auto& srf = db().lookupObject<SRF::SRFModel>("SRFProperties");
-            db().lookupObject<SRF::SRFModel>("SRFProperties");
 
         // Determine patch velocity due to SRF
         const vectorField SRFVelocity(srf.velocity(patch().Cf()));
 
-        operator==(-SRFVelocity + inletValue_);
+        if (refValuePtr_.valid())
+        {
+            refValuePtr_->evaluate();
+            operator==(-SRFVelocity + refValuePtr_());
+        }
+        else
+        {
+            operator==(-SRFVelocity + inletValue_);
+        }
     }
     // If already relative to the SRF simply supply the inlet value as a fixed
     // value
     else
     {
-        operator==(inletValue_);
+        if (refValuePtr_.valid())
+        {
+            refValuePtr_->evaluate();
+            operator==(refValuePtr_());
+        }
+        else
+        {
+            operator==(inletValue_);
+        }
     }
 
     fixedValueFvPatchVectorField::updateCoeffs();
@@ -156,7 +214,18 @@ void Foam::SRFVelocityFvPatchVectorField::write(Ostream& os) const
 {
     fvPatchVectorField::write(os);
     os.writeEntry("relative", relative_);
-    inletValue_.writeEntry("inletValue", os);
+
+    if (refValuePtr_.valid())
+    {
+        os.beginBlock("refValue");
+        refValuePtr_->write(os);
+        os.endBlock();
+    }
+    else
+    {
+        inletValue_.writeEntry("inletValue", os);
+    }
+
     writeEntry("value", os);
 }
 

src/finiteVolume/cfdTools/general/SRF/derivedFvPatchFields/SRFVelocityFvPatchVectorField/SRFVelocityFvPatchVectorField.H

@@ -114,6 +114,9 @@ class SRFVelocityFvPatchVectorField
         //- Inlet value [m/s]
         vectorField inletValue_;
 
+        //- Optional patch to retrieve values from
+        tmp<fvPatchVectorField> refValuePtr_;
+
 
 public: