multiphaseEuler: Cavitation phaseTransfer model

This adds cavitation modelling to the multiphaseEuler solver module as a
phaseTransfer model. The underlying cavitation modelling is the same as
for the compressibleVoF module.

An example specification in constant/phaseProperties is shown below:

    phaseTransfer
    {
        gas_liquid
        {
            type        cavitation;

            model       Kunz;

            liquid      water;

            pSat        80000;

            UInf        5.33;
            tInf        0.028142589;
            Cc          100;
            Cv          100;
        }
    }

Based on code contributed by Petteri Peltonen, VTT.

applications/solvers/modules/fluid/multiphaseEuler/functionObjects/Make/options

@@ -5,6 +5,8 @@ EXE_INC = \
     -I../multiphaseThermophysicalTransportModels/lnInclude \
     -I$(LIB_SRC)/physicalProperties/lnInclude \
     -I$(LIB_SRC)/thermophysicalModels/basic/lnInclude \
+    -I$(LIB_SRC)/twoPhaseModels/twoPhaseMixture/lnInclude \
+    -I$(LIB_SRC)/twoPhaseModels/compressibleTwoPhaseMixture/lnInclude \
     -I$(LIB_SRC)/MomentumTransportModels/momentumTransportModels/lnInclude \
     -I$(LIB_SRC)/MomentumTransportModels/compressible/lnInclude \
     -I$(LIB_SRC)/MomentumTransportModels/phaseCompressible/lnInclude \
@@ -25,6 +27,7 @@ LIB_LIBS = \
     -lmultiphaseProperties \
     -lphaseFluidThermophysicalTransportModels \
     -lphaseFluidMulticomponentThermophysicalTransportModels \
+    -lcompressibleTwoPhaseMixture \
     -lfiniteVolume \
     -lmeshTools \
     -lfileFormats \

applications/solvers/modules/fluid/multiphaseEuler/fvModels/Make/options

@@ -2,6 +2,8 @@ EXE_INC = \
     -I../phaseSystems/lnInclude \
     -I$(LIB_SRC)/physicalProperties/lnInclude \
     -I$(LIB_SRC)/thermophysicalModels/basic/lnInclude \
+    -I$(LIB_SRC)/twoPhaseModels/twoPhaseMixture/lnInclude \
+    -I$(LIB_SRC)/twoPhaseModels/compressibleTwoPhaseMixture/lnInclude \
     -I$(LIB_SRC)/MomentumTransportModels/momentumTransportModels/lnInclude \
     -I$(LIB_SRC)/MomentumTransportModels/compressible/lnInclude \
     -I$(LIB_SRC)/MomentumTransportModels/phaseCompressible/lnInclude \
@@ -18,6 +20,7 @@ LIB_LIBS = \
     -lmultiphaseProperties \
     -lphaseFluidThermophysicalTransportModels \
     -lphaseFluidMulticomponentThermophysicalTransportModels \
+    -lcompressibleTwoPhaseMixture \
     -lfiniteVolume \
     -lfvModels \
     -lmeshTools

applications/solvers/modules/fluid/multiphaseEuler/interfacialCompositionModels/Make/options

@@ -6,6 +6,8 @@ EXE_INC = \
     -I$(LIB_SRC)/thermophysicalModels/thermophysicalProperties/lnInclude \
     -I$(LIB_SRC)/thermophysicalModels/multicomponentThermo/lnInclude \
     -I$(LIB_SRC)/thermophysicalModels/saturationModels/lnInclude \
+    -I$(LIB_SRC)/twoPhaseModels/twoPhaseMixture/lnInclude \
+    -I$(LIB_SRC)/twoPhaseModels/compressibleTwoPhaseMixture/lnInclude \
     -I$(LIB_SRC)/MomentumTransportModels/momentumTransportModels/lnInclude \
     -I$(LIB_SRC)/MomentumTransportModels/compressible/lnInclude \
     -I$(LIB_SRC)/MomentumTransportModels/phaseCompressible/lnInclude \

applications/solvers/modules/fluid/multiphaseEuler/interfacialModels/Make/files

@@ -85,6 +85,7 @@ wallDampingModels/sine/sineWallDamping.C
 
 phaseTransferModels/phaseTransferModel/phaseTransferModel.C
 phaseTransferModels/phaseTransferModel/phaseTransferModelNew.C
+phaseTransferModels/cavitation/cavitation.C
 phaseTransferModels/deposition/deposition.C
 phaseTransferModels/reactionDriven/reactionDriven.C
 

applications/solvers/modules/fluid/multiphaseEuler/interfacialModels/Make/options

@@ -2,6 +2,10 @@ EXE_INC = \
     -I../phaseSystems/lnInclude \
     -I$(LIB_SRC)/physicalProperties/lnInclude \
     -I$(LIB_SRC)/thermophysicalModels/basic/lnInclude \
+    -I$(LIB_SRC)/thermophysicalModels/saturationModels/lnInclude \
+    -I$(LIB_SRC)/twoPhaseModels/twoPhaseMixture/lnInclude \
+    -I$(LIB_SRC)/twoPhaseModels/compressibleTwoPhaseMixture/lnInclude \
+    -I$(LIB_SRC)/twoPhaseModels/compressibleCavitation/lnInclude \
     -I$(LIB_SRC)/MomentumTransportModels/momentumTransportModels/lnInclude \
     -I$(LIB_SRC)/MomentumTransportModels/compressible/lnInclude \
     -I$(LIB_SRC)/MomentumTransportModels/phaseCompressible/lnInclude \
@@ -12,4 +16,6 @@ EXE_INC = \
 LIB_LIBS = \
     -lphaseSystem \
     -lfluidThermophysicalModels \
-    -lspecie
+    -lsaturationModels \
+    -lspecie \
+    -lcompressibleCavitationModels

applications/solvers/modules/fluid/multiphaseEuler/interfacialModels/phaseTransferModels/cavitation/cavitation.C

@@ -0,0 +1,122 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     | Website:  https://openfoam.org
+    \\  /    A nd           | Copyright (C) 2021-2022 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 "cavitation.H"
+#include "phaseSystem.H"
+#include "addToRunTimeSelectionTable.H"
+#include "fvCFD.H"
+
+// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
+
+namespace Foam
+{
+namespace phaseTransferModels
+{
+    defineTypeNameAndDebug(cavitation, 0);
+    addToRunTimeSelectionTable
+    (
+        phaseTransferModel,
+        cavitation,
+        dictionary
+    );
+}
+}
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+Foam::phaseTransferModels::cavitation::cavitation
+(
+    const dictionary& dict,
+    const phaseInterface& interface
+)
+:
+    phaseTransferModel(dict, interface),
+    interface_(interface),
+    cavitation_(compressible::cavitationModel::New(dict, interface_))
+{}
+
+
+// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
+
+Foam::phaseTransferModels::cavitation::~cavitation()
+{}
+
+
+// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
+
+bool Foam::phaseTransferModels::cavitation::mixture() const
+{
+    return true;
+}
+
+
+Foam::tmp<Foam::volScalarField>
+Foam::phaseTransferModels::cavitation::dmdtf() const
+{
+    tmp<volScalarField> tResult =
+        volScalarField::New
+        (
+            IOobject::groupName(typedName("dmdtf"), interface_.name()),
+            interface_.mesh(),
+            dimDensity/dimTime,
+            zeroGradientFvPatchField<scalar>::typeName
+        );
+
+    const Pair<tmp<volScalarField::Internal>> coeffs(cavitation_->mDot12P());
+
+    const volScalarField::Internal& p = interface_.phase1().thermo().p();
+    const volScalarField::Internal pSat1(cavitation_->pSat1());
+    const volScalarField::Internal pSat2(cavitation_->pSat2());
+
+    tResult.ref().ref() = coeffs[0]*(p - pSat1) - coeffs[1]*(p - pSat2);
+    tResult.ref().correctBoundaryConditions();
+
+    return tResult;
+}
+
+
+Foam::tmp<Foam::volScalarField>
+Foam::phaseTransferModels::cavitation::d2mdtdpf() const
+{
+    tmp<volScalarField> tResult =
+        volScalarField::New
+        (
+            IOobject::groupName(typedName("d2mdtdpf"), interface_.name()),
+            interface_.mesh(),
+            dimDensity/dimTime/dimPressure,
+            zeroGradientFvPatchField<scalar>::typeName
+        );
+
+    const Pair<tmp<volScalarField::Internal>> coeffs(cavitation_->mDot12P());
+
+    tResult.ref().ref() = coeffs[0] - coeffs[1];
+    tResult.ref().correctBoundaryConditions();
+
+    return tResult;
+}
+
+
+// ************************************************************************* //

applications/solvers/modules/fluid/multiphaseEuler/interfacialModels/phaseTransferModels/cavitation/cavitation.H

@@ -0,0 +1,134 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     | Website:  https://openfoam.org
+    \\  /    A nd           | Copyright (C) 2021-2022 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::phaseTransferModels::cavitation
+
+Description
+    A phase transfer model which represents cavitation.
+
+    Example usage:
+    \verbatim
+    phaseTransfer
+    {
+        vapour_dispersedIn_water
+        {
+            type        cavitation;
+
+            model       Kunz;
+
+            liquid      water;
+
+            pSat        80000;
+
+            UInf        5.33;
+            tInf        0.028142589;
+            Cc          100;
+            Cv          100;
+        }
+    }
+    \endverbatim
+
+SourceFiles
+    cavitation.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef cavitation_H
+#define cavitation_H
+
+#include "phaseTransferModel.H"
+#include "cavitationModel.H"
+#include "phaseModel.H"
+#include "dispersedPhaseInterface.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+
+class phasePair;
+
+namespace phaseTransferModels
+{
+
+/*---------------------------------------------------------------------------*\
+                       Class cavitation Declaration
+\*---------------------------------------------------------------------------*/
+
+class cavitation
+:
+    public phaseTransferModel
+{
+private:
+
+    // Private Data
+
+        //- Interface
+        const phaseInterface interface_;
+
+        //- Cavitation model
+        autoPtr<compressible::cavitationModel> cavitation_;
+
+
+public:
+
+    //- Runtime type information
+    TypeName("cavitation");
+
+
+    // Constructors
+
+        //- Construct from components
+        cavitation
+        (
+            const dictionary& dict,
+            const phaseInterface& interface
+        );
+
+
+    //- Destructor
+    virtual ~cavitation();
+
+
+    // Member Functions
+
+        //- Whether or not there is a mass transfer rate for the mixture
+        virtual bool mixture() const;
+
+        //- The mass transfer rate for the mixture
+        virtual tmp<volScalarField> dmdtf() const;
+
+        //- The derivative of mass transfer w.r.t. pressure
+        virtual tmp<volScalarField> d2mdtdpf() const;
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace phaseTransferModels
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif

applications/solvers/modules/fluid/multiphaseEuler/interfacialModels/phaseTransferModels/phaseTransferModel/phaseTransferModel.C

@@ -37,6 +37,9 @@ namespace Foam
 const Foam::dimensionSet Foam::phaseTransferModel::dimDmdt =
     Foam::dimDensity/Foam::dimTime;
 
+const Foam::dimensionSet Foam::phaseTransferModel::dimD2mdtdp =
+    Foam::dimDensity/Foam::dimTime/Foam::dimPressure;
+
 const Foam::hashedWordList Foam::phaseTransferModel::noSpecies_ =
     Foam::hashedWordList();
 
@@ -80,6 +83,12 @@ Foam::tmp<Foam::volScalarField> Foam::phaseTransferModel::dmdtf() const
 }
 
 
+Foam::tmp<Foam::volScalarField> Foam::phaseTransferModel::d2mdtdpf() const
+{
+    return tmp<volScalarField>(nullptr);
+}
+
+
 const Foam::hashedWordList& Foam::phaseTransferModel::species() const
 {
     return noSpecies_;
@@ -119,6 +128,20 @@ Foam::blendedPhaseTransferModel::dmdtf() const
 }
 
 
+Foam::tmp<Foam::volScalarField>
+Foam::blendedPhaseTransferModel::d2mdtdpf() const
+{
+    return
+        evaluate
+        (
+            &phaseTransferModel::d2mdtdpf,
+            "d2mdtdpf",
+            phaseTransferModel::dimD2mdtdp,
+            true
+        );
+}
+
+
 Foam::hashedWordList Foam::blendedPhaseTransferModel::species() const
 {
     return evaluate(&phaseTransferModel::species);

applications/solvers/modules/fluid/multiphaseEuler/interfacialModels/phaseTransferModels/phaseTransferModel/phaseTransferModel.H

@@ -82,6 +82,9 @@ public:
         //- Mass transfer rate dimensions
         static const dimensionSet dimDmdt;
 
+        //- Mass transfer rate derivative w.r.t pressure dimensions
+        static const dimensionSet dimD2mdtdp;
+
         //- Does this model require correcting on fixed flux boundaries?
         static const bool correctFixedFluxBCs = false;
 
@@ -120,6 +123,9 @@ public:
         //- The mass transfer rate for the mixture
         virtual tmp<volScalarField> dmdtf() const;
 
+        //- The mass transfer rate derivative w.r.t pressure for the mixture
+        virtual tmp<volScalarField> d2mdtdpf() const;
+
         //- The list of individual species that are transferred
         virtual const hashedWordList& species() const;
 
@@ -166,6 +172,9 @@ public:
         //- The mass transfer rate for the mixture
         tmp<volScalarField> dmdtf() const;
 
+        //- The mass transfer rate derivative w.r.t pressure for the mixture
+        tmp<volScalarField> d2mdtdpf() const;
+
         //- The list of individual species that are transferred
         hashedWordList species() const;
 

applications/solvers/modules/fluid/multiphaseEuler/multiphaseCompressibleMomentumTransportModels/Make/options

@@ -7,6 +7,8 @@ EXE_INC = \
     -I$(LIB_SRC)/thermophysicalModels/specie/lnInclude \
     -I$(LIB_SRC)/thermophysicalModels/multicomponentThermo/lnInclude \
     -I$(LIB_SRC)/thermophysicalModels/saturationModels/lnInclude \
+    -I$(LIB_SRC)/twoPhaseModels/twoPhaseMixture/lnInclude \
+    -I$(LIB_SRC)/twoPhaseModels/compressibleTwoPhaseMixture/lnInclude \
     -I$(LIB_SRC)/MomentumTransportModels/momentumTransportModels/lnInclude \
     -I$(LIB_SRC)/MomentumTransportModels/compressible/lnInclude \
     -I$(LIB_SRC)/MomentumTransportModels/phaseCompressible/lnInclude \

applications/solvers/modules/fluid/multiphaseEuler/multiphaseEuler/Make/options

@@ -6,6 +6,8 @@ EXE_INC = \
     -I../interfacialCompositionModels/lnInclude \
     -I$(LIB_SRC)/physicalProperties/lnInclude \
     -I$(LIB_SRC)/thermophysicalModels/basic/lnInclude \
+    -I$(LIB_SRC)/twoPhaseModels/twoPhaseMixture/lnInclude \
+    -I$(LIB_SRC)/twoPhaseModels/compressibleTwoPhaseMixture/lnInclude \
     -I$(LIB_SRC)/MomentumTransportModels/momentumTransportModels/lnInclude \
     -I$(LIB_SRC)/MomentumTransportModels/compressible/lnInclude \
     -I$(LIB_SRC)/MomentumTransportModels/phaseCompressible/lnInclude \

applications/solvers/modules/fluid/multiphaseEuler/multiphaseEuler/multiphaseSystems/Make/options

@@ -9,6 +9,8 @@ EXE_INC = \
     -I$(LIB_SRC)/thermophysicalModels/specie/lnInclude \
     -I$(LIB_SRC)/thermophysicalModels/multicomponentThermo/lnInclude \
     -I$(LIB_SRC)/thermophysicalModels/saturationModels/lnInclude \
+    -I$(LIB_SRC)/twoPhaseModels/twoPhaseMixture/lnInclude \
+    -I$(LIB_SRC)/twoPhaseModels/compressibleTwoPhaseMixture/lnInclude \
     -I$(LIB_SRC)/MomentumTransportModels/momentumTransportModels/lnInclude \
     -I$(LIB_SRC)/MomentumTransportModels/compressible/lnInclude \
     -I$(LIB_SRC)/MomentumTransportModels/phaseCompressible/lnInclude \

applications/solvers/modules/fluid/multiphaseEuler/multiphaseReactions/Make/options

@@ -5,6 +5,8 @@ EXE_INC = \
     -I$(LIB_SRC)/thermophysicalModels/basic/lnInclude \
     -I$(LIB_SRC)/thermophysicalModels/multicomponentThermo/lnInclude \
     -I$(LIB_SRC)/thermophysicalModels/chemistryModel/lnInclude \
+    -I$(LIB_SRC)/twoPhaseModels/twoPhaseMixture/lnInclude \
+    -I$(LIB_SRC)/twoPhaseModels/compressibleTwoPhaseMixture/lnInclude \
     -I$(LIB_SRC)/finiteVolume/lnInclude \
     -I$(LIB_SRC)/meshTools/lnInclude
 

applications/solvers/modules/fluid/multiphaseEuler/multiphaseThermophysicalTransportModels/Make/options

@@ -6,6 +6,9 @@ EXE_INC = \
     -I$(LIB_SRC)/thermophysicalModels/basic/lnInclude \
     -I$(LIB_SRC)/thermophysicalModels/specie/lnInclude \
     -I$(LIB_SRC)/thermophysicalModels/multicomponentThermo/lnInclude \
+    -I$(LIB_SRC)/thermophysicalModels/saturationModels/lnInclude \
+    -I$(LIB_SRC)/twoPhaseModels/twoPhaseMixture/lnInclude \
+    -I$(LIB_SRC)/twoPhaseModels/compressibleTwoPhaseMixture/lnInclude \
     -I$(LIB_SRC)/MomentumTransportModels/momentumTransportModels/lnInclude \
     -I$(LIB_SRC)/MomentumTransportModels/compressible/lnInclude \
     -I$(LIB_SRC)/MomentumTransportModels/phaseCompressible/lnInclude \

applications/solvers/modules/fluid/multiphaseEuler/phaseSystems/Make/options

@@ -4,11 +4,13 @@ EXE_INC = \
     -I../multiphaseCompressibleMomentumTransportModels/lnInclude \
     -I../multiphaseThermophysicalTransportModels/lnInclude \
     -I$(LIB_SRC)/physicalProperties/lnInclude \
-    -I$(LIB_SRC)/multiphaseModels/multiphaseProperties/lnInclude \
     -I$(LIB_SRC)/thermophysicalModels/basic/lnInclude \
     -I$(LIB_SRC)/thermophysicalModels/specie/lnInclude \
     -I$(LIB_SRC)/thermophysicalModels/multicomponentThermo/lnInclude \
     -I$(LIB_SRC)/thermophysicalModels/saturationModels/lnInclude \
+    -I$(LIB_SRC)/twoPhaseModels/twoPhaseMixture/lnInclude \
+    -I$(LIB_SRC)/twoPhaseModels/compressibleTwoPhaseMixture/lnInclude \
+    -I$(LIB_SRC)/multiphaseModels/multiphaseProperties/lnInclude \
     -I$(LIB_SRC)/MomentumTransportModels/momentumTransportModels/lnInclude \
     -I$(LIB_SRC)/MomentumTransportModels/compressible/lnInclude \
     -I$(LIB_SRC)/MomentumTransportModels/phaseCompressible/lnInclude \

applications/solvers/modules/fluid/multiphaseEuler/phaseSystems/PhaseSystems/PhaseTransferPhaseSystem/PhaseTransferPhaseSystem.C

@@ -182,6 +182,26 @@ Foam::PhaseTransferPhaseSystem<BasePhaseSystem>::PhaseTransferPhaseSystem
                     dimensionedScalar(dimDensity/dimTime, 0)
                 )
             );
+
+            d2mdtdpfs_.insert
+            (
+                interface,
+                new volScalarField
+                (
+                    IOobject
+                    (
+                        IOobject::groupName
+                        (
+                            "phaseTransfer:d2mdtdpf",
+                            interface.name()
+                        ),
+                        this->mesh().time().timeName(),
+                        this->mesh()
+                    ),
+                    this->mesh(),
+                    dimensionedScalar(dimDensity/dimTime/dimPressure, 0)
+                )
+            );
         }
 
         dmidtfs_.insert(interface, new HashPtrTable<volScalarField>());
@@ -281,6 +301,24 @@ Foam::PhaseTransferPhaseSystem<BasePhaseSystem>::dmdts() const
 }
 
 
+template<class BasePhaseSystem>
+Foam::PtrList<Foam::volScalarField>
+Foam::PhaseTransferPhaseSystem<BasePhaseSystem>::d2mdtdps() const
+{
+    PtrList<volScalarField> d2mdtdps(BasePhaseSystem::d2mdtdps());
+
+    forAllConstIter(phaseSystem::dmdtfTable, d2mdtdpfs_, d2mdtdpfIter)
+    {
+        const phaseInterface interface(*this, d2mdtdpfIter.key());
+
+        addField(interface.phase1(), "d2mdtdp", *d2mdtdpfIter(), d2mdtdps);
+        addField(interface.phase2(), "d2mdtdp", - *d2mdtdpfIter(), d2mdtdps);
+    }
+
+    return d2mdtdps;
+}
+
+
 template<class BasePhaseSystem>
 Foam::autoPtr<Foam::phaseSystem::momentumTransferTable>
 Foam::PhaseTransferPhaseSystem<BasePhaseSystem>::momentumTransfer()
@@ -380,6 +418,7 @@ void Foam::PhaseTransferPhaseSystem<BasePhaseSystem>::correct()
         if (phaseTransferModelIter()->mixture())
         {
             *dmdtfs_[interface] = Zero;
+            *d2mdtdpfs_[interface] = Zero;
         }
 
         const hashedWordList species(phaseTransferModelIter()->species());
@@ -405,6 +444,7 @@ void Foam::PhaseTransferPhaseSystem<BasePhaseSystem>::correct()
         if (phaseTransferModelIter()->mixture())
         {
             *dmdtfs_[interface] += phaseTransferModelIter()->dmdtf();
+            *d2mdtdpfs_[interface] += phaseTransferModelIter()->d2mdtdpf();
         }
 
         const HashPtrTable<volScalarField> dmidtf

applications/solvers/modules/fluid/multiphaseEuler/phaseSystems/PhaseSystems/PhaseTransferPhaseSystem/PhaseTransferPhaseSystem.H

@@ -76,6 +76,9 @@ private:
             //- Bulk mass transfer rates
             phaseSystem::dmdtfTable dmdtfs_;
 
+            //- Bulk mass transfer pressure linearisation coefficients
+            phaseSystem::dmdtfTable d2mdtdpfs_;
+
             //- Specie mass transfer rates
             phaseSystem::dmidtfTable dmidtfs_;
 
@@ -125,6 +128,10 @@ public:
         //- Return the mass transfer rates for each phase
         virtual PtrList<volScalarField> dmdts() const;
 
+        //- Return the mass transfer pressure linearisation coefficients for
+        //  each phase
+        virtual PtrList<volScalarField> d2mdtdps() const;
+
         //- Return the momentum transfer matrices for the cell-based algorithm
         virtual autoPtr<phaseSystem::momentumTransferTable> momentumTransfer();
 

applications/solvers/modules/fluid/multiphaseEuler/phaseSystems/phaseInterface/phaseInterface/phaseInterface.H

@@ -39,6 +39,7 @@ SourceFiles
 #define phaseInterface_H
 
 #include "phaseModel.H"
+#include "compressibleTwoPhases.H"
 #include "uniformDimensionedFields.H"
 #include "runTimeSelectionTables.H"
 
@@ -54,6 +55,8 @@ class phaseInterfaceKey;
 \*---------------------------------------------------------------------------*/
 
 class phaseInterface
+:
+    public compressibleTwoPhases
 {
 private:
 
@@ -290,6 +293,24 @@ public:
 
         // Access
 
+            //- Return the volume fraction of phase 1
+            virtual inline const volScalarField& alpha1() const;
+
+            //- Return the volume fraction of phase 2
+            virtual inline const volScalarField& alpha2() const;
+
+            //- Return the thermo for phase 1
+            virtual inline const rhoThermo& thermo1() const;
+
+            //- Return the thermo for phase 2
+            virtual inline const rhoThermo& thermo2() const;
+
+            //- Return the density of phase 1
+            virtual inline const volScalarField& rho1() const;
+
+            //- Return the density of phase 2
+            virtual inline const volScalarField& rho2() const;
+
             //- Return phase 1
             inline const phaseModel& phase1() const;
 

applications/solvers/modules/fluid/multiphaseEuler/phaseSystems/phaseInterface/phaseInterface/phaseInterfaceI.H

@@ -27,6 +27,42 @@ License
 
 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
+inline const Foam::volScalarField& Foam::phaseInterface::alpha1() const
+{
+    return phase1();
+}
+
+
+inline const Foam::volScalarField& Foam::phaseInterface::alpha2() const
+{
+    return phase2();
+}
+
+
+inline const Foam::rhoThermo& Foam::phaseInterface::thermo1() const
+{
+    return phase1().thermo();
+}
+
+
+inline const Foam::rhoThermo& Foam::phaseInterface::thermo2() const
+{
+    return phase2().thermo();
+}
+
+
+inline const Foam::volScalarField& Foam::phaseInterface::rho1() const
+{
+    return phase1().rho();
+}
+
+
+inline const Foam::volScalarField& Foam::phaseInterface::rho2() const
+{
+    return phase2().rho();
+}
+
+
 inline const Foam::phaseModel& Foam::phaseInterface::phase1() const
 {
     return phase1_;
@@ -41,7 +77,7 @@ inline const Foam::phaseModel& Foam::phaseInterface::phase2() const
 
 inline bool Foam::phaseInterface::contains(const phaseModel& phase) const
 {
-    return &phase1_ == &phase || & phase2_ == &phase;
+    return &phase1_ == &phase || &phase2_ == &phase;
 }
 
 

src/twoPhaseModels/compressibleCavitation/cavitationModel/cavitationModel.C

@@ -24,6 +24,7 @@ License
 \*---------------------------------------------------------------------------*/
 
 #include "cavitationModel.H"
+#include "constantPressure.H"
 #include "fvmSup.H"
 
 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
@@ -48,16 +49,13 @@ Foam::compressible::cavitationModel::cavitationModel
 :
     phases_(phases),
     liquidIndex_(phases.index(dict.lookup<word>("liquid"))),
-    saturationModel_
-    (
-        saturationPressureModel::New(dict.subDict("saturationPressure"))
-    )
+    saturationModel_(saturationPressureModel::New("pSat", dict))
 {}
 
 
 bool Foam::compressible::cavitationModel::read(const dictionary& dict)
 {
-    saturationModel_.reset(saturationPressureModel::New(dict).ptr());
+    saturationModel_.reset(saturationPressureModel::New("pSat", dict).ptr());
 
     return true;
 }