multiphaseEuler: Library reorganisation

This change makes multiphaseEuler more consistent with other modules and
makes its sub-libraries less inter-dependent. Some left-over references
to multiphaseEulerFoam have also been removed.

applications/modules/multiphaseEuler/phaseSystem/phaseModels/PurePhaseModel/PurePhaseModel.C

@@ -0,0 +1,128 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     | Website:  https://openfoam.org
+    \\  /    A nd           | Copyright (C) 2015-2023 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 "PurePhaseModel.H"
+#include "phaseSystem.H"
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+template<class BasePhaseModel>
+Foam::PurePhaseModel<BasePhaseModel>::PurePhaseModel
+(
+    const phaseSystem& fluid,
+    const word& phaseName,
+    const bool referencePhase,
+    const label index
+)
+:
+    BasePhaseModel(fluid, phaseName, referencePhase, index)
+{}
+
+
+// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
+
+template<class BasePhaseModel>
+Foam::PurePhaseModel<BasePhaseModel>::~PurePhaseModel()
+{}
+
+
+// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
+
+template<class BasePhaseModel>
+bool Foam::PurePhaseModel<BasePhaseModel>::pure() const
+{
+    return true;
+}
+
+
+template<class BasePhaseModel>
+Foam::tmp<Foam::fvScalarMatrix>
+Foam::PurePhaseModel<BasePhaseModel>::YiEqn(volScalarField& Yi)
+{
+    FatalErrorInFunction
+        << "Cannot construct a species fraction equation for a pure phase"
+        << exit(FatalError);
+
+    return tmp<fvScalarMatrix>();
+}
+
+
+template<class BasePhaseModel>
+const Foam::PtrList<Foam::volScalarField>&
+Foam::PurePhaseModel<BasePhaseModel>::Y() const
+{
+    // Y_ has never been set, so we are returning an empty list
+
+    return Y_;
+}
+
+
+template<class BasePhaseModel>
+const Foam::volScalarField&
+Foam::PurePhaseModel<BasePhaseModel>::Y(const word& name) const
+{
+    FatalErrorInFunction
+        << "Cannot get a species fraction by name from a pure phase"
+        << exit(FatalError);
+
+    return NullObjectRef<volScalarField>();
+}
+
+
+template<class BasePhaseModel>
+Foam::PtrList<Foam::volScalarField>&
+Foam::PurePhaseModel<BasePhaseModel>::YRef()
+{
+    FatalErrorInFunction
+        << "Cannot access the species fractions of for a pure phase"
+        << exit(FatalError);
+
+    return Y_;
+}
+
+
+template<class BasePhaseModel>
+const Foam::UPtrList<Foam::volScalarField>&
+Foam::PurePhaseModel<BasePhaseModel>::YActive() const
+{
+    // Y_ has never been set, so we are returning an empty list
+
+    return Y_;
+}
+
+
+template<class BasePhaseModel>
+Foam::UPtrList<Foam::volScalarField>&
+Foam::PurePhaseModel<BasePhaseModel>::YActiveRef()
+{
+    FatalErrorInFunction
+        << "Cannot access the species fractions of for a pure phase"
+        << exit(FatalError);
+
+    return Y_;
+}
+
+
+// ************************************************************************* //