explicitPorositySource: Change field naming to support multiphase

src/fvOptions/sources/derived/explicitPorositySource/explicitPorositySource.C

@@ -45,10 +45,22 @@ namespace fv
 }
 }
 
-// * * * * * * * * * * * * * Protected Member Functions  * * * * * * * * * * //
 
-void Foam::fv::explicitPorositySource::initialise()
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+Foam::fv::explicitPorositySource::explicitPorositySource
+(
+    const word& name,
+    const word& modelType,
+    const dictionary& dict,
+    const fvMesh& mesh
+)
+:
+    option(name, modelType, dict, mesh),
+    porosityPtr_(NULL)
 {
+    read(dict);
+
     if (selectionMode_ != smCellZone)
     {
         FatalErrorIn("void Foam::fv::explicitPorositySource::initialise()")
@@ -66,61 +78,48 @@ void Foam::fv::explicitPorositySource::initialise()
             coeffs_,
             cellSetName_
         ).ptr()
-    ),
-
-    fieldNames_.setSize(1, UName_);
-    applied_.setSize(1, false);
+    );
 }
 
 
-// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
-Foam::fv::explicitPorositySource::explicitPorositySource
+void Foam::fv::explicitPorositySource::addSup
 (
-    const word& name,
-    const word& modelType,
-    const dictionary& dict,
-    const fvMesh& mesh
+    fvMatrix<vector>& eqn,
+    const label fieldI
 )
-:
-    option(name, modelType, dict, mesh),
-    porosityPtr_(NULL),
-    UName_(coeffs_.lookupOrDefault<word>("UName", "U")),
-    muName_(coeffs_.lookupOrDefault<word>("muName", "thermo:mu"))
 {
-    initialise();
+    fvMatrix<vector> porosityEqn(eqn.psi(), eqn.dimensions());
+    porosityPtr_->addResistance(porosityEqn);
+    eqn -= porosityEqn;
 }
 
 
-// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
-
 void Foam::fv::explicitPorositySource::addSup
 (
+    const volScalarField& rho,
     fvMatrix<vector>& eqn,
     const label fieldI
 )
 {
     fvMatrix<vector> porosityEqn(eqn.psi(), eqn.dimensions());
-
     porosityPtr_->addResistance(porosityEqn);
-
     eqn -= porosityEqn;
 }
 
 
 void Foam::fv::explicitPorositySource::addSup
 (
+    const volScalarField& alpha,
     const volScalarField& rho,
     fvMatrix<vector>& eqn,
     const label fieldI
 )
 {
     fvMatrix<vector> porosityEqn(eqn.psi(), eqn.dimensions());
-
-    const volScalarField& mu = mesh_.lookupObject<volScalarField>(muName_);
-    porosityPtr_->addResistance(porosityEqn, rho, mu);
-
-    eqn -= porosityEqn;
+    porosityPtr_->addResistance(porosityEqn);
+    eqn -= alpha*porosityEqn;
 }
 
 
@@ -135,8 +134,21 @@ bool Foam::fv::explicitPorositySource::read(const dictionary& dict)
 {
     if (option::read(dict))
     {
-        coeffs_.readIfPresent("UName", UName_);
-        coeffs_.readIfPresent("muName", muName_);
+        if (coeffs_.found("UNames"))
+        {
+            coeffs_.lookup("UNames") >> fieldNames_;
+        }
+        else if (coeffs_.found("UName"))
+        {
+            word UName(coeffs_.lookup("UName"));
+            fieldNames_ = wordList(1, UName);
+        }
+        else
+        {
+            fieldNames_ = wordList(1, "U");
+        }
+
+        applied_.setSize(fieldNames_.size(), false);
 
         return true;
     }

src/fvOptions/sources/derived/explicitPorositySource/explicitPorositySource.H

@@ -34,6 +34,7 @@ Description
     explicitPorositySourceCoeffs
     {
         type            DarcyForchheimer;
+
         DarcyForchheimerCoeffs
         {
             d   d [0 -2 0 0 0 0 0] (5e7 -1000 -1000);
@@ -88,22 +89,6 @@ protected:
         //- Run-time selectable porosity model
         autoPtr<porosityModel> porosityPtr_;
 
-        //- Velocity field name, default = U
-        word UName_;
-
-        //- Density field name (compressible case only), default = rho
-        word rhoName_;
-
-        //- Dynamic viscosity field name (compressible case only)
-        //  default = thermo:mu
-        word muName_;
-
-
-    // Protected Member Functions
-
-        //- Initialise
-        void initialise();
-
 
 private:
 
@@ -158,6 +143,15 @@ public:
                 const label fieldI
             );
 
+            //- Add implicit contribution to phase momentum equation
+            virtual void addSup
+            (
+                const volScalarField& alpha,
+                const volScalarField& rho,
+                fvMatrix<vector>& eqn,
+                const label fieldI
+            );
+
 
         // I-O