BUG: twoPhaseEulerFoam: removed multiple of the continuous phase fraction from force and heat transfer models

applications/solvers/multiphase/twoPhaseEulerFoam/UEqns.H

@@ -23,12 +23,11 @@ volScalarField dragCoeff(fluid.dragCoeff());
           + phase1.turbulence().divDevReff(U1)
          ==
           - fvm::Sp(dragCoeff/rho1, U1)
-          - alpha1*alpha2/rho1
+          - (
-           *(
                 liftForce
               + wallLubricationForce
               + turbulentDispersionForce
-            )
+            )/rho1
           - virtualMassCoeff/rho1
            *(
                 fvm::ddt(U1)
@@ -50,12 +49,11 @@ volScalarField dragCoeff(fluid.dragCoeff());
           + phase2.turbulence().divDevReff(U2)
          ==
           - fvm::Sp(dragCoeff/rho2, U2)
-          + alpha1*alpha2/rho2
+          + (
-           *(
                 liftForce
               + wallLubricationForce
               + turbulentDispersionForce
-            )
+            )/rho2
           - virtualMassCoeff/rho2
            *(
                 fvm::ddt(U2)

applications/solvers/multiphase/twoPhaseEulerFoam/interfacialModels/dragModels/dragModel/dragModel.C

@@ -107,13 +107,11 @@ Foam::tmp<Foam::volScalarField> Foam::dragModel::K() const
     return
         0.75
        *CdRe()
+       *max(pair_.dispersed(), residualAlpha_)
        *swarmCorrection_->Cs()
        *pair_.continuous().rho()
        *pair_.continuous().nu()
-       /(
+       /sqr(pair_.dispersed().d());
-            max(pair_.continuous(), residualAlpha_)
-           *sqr(pair_.dispersed().d())
-        );
 }
 
 

applications/solvers/multiphase/twoPhaseEulerFoam/interfacialModels/heatTransferModels/RanzMarshall/RanzMarshall.C

@@ -64,7 +64,12 @@ Foam::heatTransferModels::RanzMarshall::K() const
 {
     volScalarField Nu(scalar(2) + 0.6*pair_.Re()*cbrt(pair_.Pr()));
 
-    return 6.0*pair_.continuous().kappa()*Nu/sqr(pair_.dispersed().d());
+    return
+        6.0
+       *max(pair_.dispersed(), residualAlpha_)
+       *pair_.continuous().kappa()
+       *Nu
+       /sqr(pair_.dispersed().d());
 }
 
 

applications/solvers/multiphase/twoPhaseEulerFoam/interfacialModels/heatTransferModels/heatTransferModel/heatTransferModel.C

@@ -45,7 +45,8 @@ Foam::heatTransferModel::heatTransferModel
     const phasePair& pair
 )
 :
-    pair_(pair)
+    pair_(pair),
+    residualAlpha_("residualAlpha", dimless, dict.lookup("residualAlpha"))
 {}
 
 

applications/solvers/multiphase/twoPhaseEulerFoam/interfacialModels/heatTransferModels/heatTransferModel/heatTransferModel.H

@@ -58,6 +58,9 @@ protected:
         //- Phase pair
         const phasePair& pair_;
 
+        //- Residual phase fraction
+        const dimensionedScalar residualAlpha_;
+
 
 public:
 

applications/solvers/multiphase/twoPhaseEulerFoam/interfacialModels/liftModels/liftModel/liftModel.C

@@ -62,6 +62,7 @@ Foam::tmp<Foam::volVectorField> Foam::liftModel::F() const
 {
     return
         Cl()
+       *pair_.dispersed()
        *pair_.continuous().rho()
        *(
             pair_.Ur() ^ fvc::curl(pair_.continuous().U())

applications/solvers/multiphase/twoPhaseEulerFoam/interfacialModels/turbulentDispersionModels/Gosman/Gosman.C

@@ -85,6 +85,7 @@ Foam::turbulentDispersionModels::Gosman::F() const
     return
       - 0.75
        *drag.CdRe()
+       *pair_.dispersed()
        *pair_.continuous().nu()
        *pair_.continuous().turbulence().nut()
        /(

applications/solvers/multiphase/twoPhaseEulerFoam/interfacialModels/turbulentDispersionModels/constantTurbulentDispersionCoefficient/constantTurbulentDispersionCoefficient.C

@@ -75,6 +75,7 @@ F() const
 {
     return 
       - Ctd_
+       *pair_.dispersed()
        *pair_.continuous().rho()
        *pair_.continuous().turbulence().k()
        *fvc::grad(pair_.dispersed());

applications/solvers/multiphase/twoPhaseEulerFoam/interfacialModels/virtualMassModels/virtualMassModel/virtualMassModel.C

@@ -72,7 +72,7 @@ Foam::virtualMassModel::~virtualMassModel()
 
 Foam::tmp<Foam::volScalarField> Foam::virtualMassModel::K() const
 {
-    return Cvm()*pair_.continuous().rho();
+    return Cvm()*pair_.dispersed()*pair_.continuous().rho();
 }
 
 

applications/solvers/multiphase/twoPhaseEulerFoam/interfacialModels/wallLubricationModels/Antal/Antal.C

@@ -79,6 +79,7 @@ Foam::tmp<Foam::volVectorField> Foam::wallLubricationModels::Antal::F() const
             dimensionedScalar("zero", dimless/dimLength, 0),
             Cw1_/pair_.dispersed().d() + Cw2_/yWall_
         )
+       *pair_.dispersed()
        *pair_.continuous().rho()
        *magSqr(Ur - (Ur & nWall)*nWall)
        *nWall;

applications/solvers/multiphase/twoPhaseEulerFoam/twoPhaseSystem/BlendedInterfacialModel/BlendedInterfacialModel.C

@@ -163,8 +163,6 @@ Foam::BlendedInterfacialModel<modelType>::K() const
 
     if (model_.valid() || model1In2_.valid() || model2In1_.valid())
     {
-        x() *= max(pair_.phase1()*pair_.phase2(), blending_.residualAlpha());
-
         correctFixedFluxBCs(x());
     }
 

applications/solvers/multiphase/twoPhaseEulerFoam/twoPhaseSystem/BlendedInterfacialModel/blendingMethods/blendingMethod/blendingMethod.C

@@ -40,8 +40,6 @@ Foam::blendingMethod::blendingMethod
 (
     const dictionary& dict
 )
-:
-    residualAlpha_("residualAlpha", dimless, dict.lookup("residualAlpha"))
 {}
 
 
@@ -51,12 +49,4 @@ Foam::blendingMethod::~blendingMethod()
 {}
 
 
-// * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //
-
-const Foam::dimensionedScalar& Foam::blendingMethod::residualAlpha() const
-{
-    return residualAlpha_;
-}
-
-
 // ************************************************************************* //

applications/solvers/multiphase/twoPhaseEulerFoam/twoPhaseSystem/BlendedInterfacialModel/blendingMethods/blendingMethod/blendingMethod.H

@@ -49,14 +49,6 @@ namespace Foam
 
 class blendingMethod
 {
-protected:
-
-    // Protected data
-
-        //- Residual phase fraction
-        const dimensionedScalar residualAlpha_;
-
-
 public:
 
     //- Runtime type information
@@ -101,9 +93,6 @@ public:
 
     // Member Functions
 
-        //- Residual phase fraction
-        const dimensionedScalar& residualAlpha() const;
-
         //- Factor for first phase
         virtual tmp<volScalarField> f1
         (

tutorials/multiphase/twoPhaseEulerFoam/LES/bubbleColumn/constant/phaseProperties

@@ -41,7 +41,6 @@ blending
     default
     {
         type            linear;
-        residualAlpha   1e-6;
         maxFullyDispersedAlpha.air 0.3;
         maxPartlyDispersedAlpha.air 0.5;
         maxFullyDispersedAlpha.water 0.3;
@@ -126,11 +125,13 @@ heatTransfer
     (air in water)
     {
         type            RanzMarshall;
+        residualAlpha   1e-6;
     }
 
     (water in air)
     {
         type            RanzMarshall;
+        residualAlpha   1e-6;
     }
 );
 

tutorials/multiphase/twoPhaseEulerFoam/RAS/bubbleColumn/constant/phaseProperties

@@ -41,7 +41,6 @@ blending
     default
     {
         type            linear;
-        residualAlpha   1e-6;
         maxFullyDispersedAlpha.air 0.3;
         maxPartlyDispersedAlpha.air 0.5;
         maxFullyDispersedAlpha.water 0.3;
@@ -126,11 +125,13 @@ heatTransfer
     (air in water)
     {
         type            RanzMarshall;
+        residualAlpha   1e-6;
     }
 
     (water in air)
     {
         type            RanzMarshall;
+        residualAlpha   1e-6;
     }
 );
 

tutorials/multiphase/twoPhaseEulerFoam/RAS/fluidisedBed/constant/phaseProperties

@@ -42,7 +42,6 @@ blending
     default
     {
         type            none;
-        residualAlpha   1e-3;
         continuousPhase air;
     }
 }
@@ -72,11 +71,6 @@ drag
 
 virtualMass
 (
-    (particles in air)
-    {
-        type            constantCoefficient;
-        Cvm             0;
-    }
 );
 
 heatTransfer
@@ -84,6 +78,7 @@ heatTransfer
     (particles in air)
     {
         type            RanzMarshall;
+        residualAlpha   1e-3;
     }
 );
 

tutorials/multiphase/twoPhaseEulerFoam/laminar/bubbleColumn/constant/phaseProperties

@@ -41,7 +41,6 @@ blending
     default
     {
         type            linear;
-        residualAlpha   1e-6;
         maxFullyDispersedAlpha.air 0.3;
         maxPartlyDispersedAlpha.air 0.5;
         maxFullyDispersedAlpha.water 0.3;
@@ -126,11 +125,13 @@ heatTransfer
     (air in water)
     {
         type            RanzMarshall;
+        residualAlpha   1e-6;
     }
 
     (water in air)
     {
         type            RanzMarshall;
+        residualAlpha   1e-6;
     }
 );
 

tutorials/multiphase/twoPhaseEulerFoam/laminar/bubbleColumnIATE/constant/phaseProperties

@@ -62,7 +62,6 @@ blending
     default
     {
         type            linear;
-        residualAlpha   1e-6;
         maxFullyDispersedAlpha.air 0.3;
         maxPartlyDispersedAlpha.air 0.5;
         maxFullyDispersedAlpha.water 0.3;
@@ -147,11 +146,13 @@ heatTransfer
     (air in water)
     {
         type            RanzMarshall;
+        residualAlpha   1e-6;
     }
 
     (water in air)
     {
         type            RanzMarshall;
+        residualAlpha   1e-6;
     }
 );
 

tutorials/multiphase/twoPhaseEulerFoam/laminar/fluidisedBed/constant/phaseProperties

@@ -42,7 +42,6 @@ blending
     default
     {
         type            none;
-        residualAlpha   1e-3;
         continuousPhase air;
     }
 }
@@ -84,6 +83,7 @@ heatTransfer
     (particles in air)
     {
         type            RanzMarshall;
+        residualAlpha   1e-3;
     }
 );
 

tutorials/multiphase/twoPhaseEulerFoam/laminar/mixerVessel2D/constant/phaseProperties

@@ -41,7 +41,6 @@ blending
     default
     {
         type            linear;
-        residualAlpha   1e-6;
         maxFullyDispersedAlpha.air 0.3;
         maxPartlyDispersedAlpha.air 0.5;
         maxFullyDispersedAlpha.water 0.3;
@@ -126,11 +125,13 @@ heatTransfer
     (air in water)
     {
         type            RanzMarshall;
+        residualAlpha   1e-6;
     }
 
     (water in air)
     {
         type            RanzMarshall;
+        residualAlpha   1e-6;
     }
 );