applications/solvers/modules: Reorganised to match the structure of tutorials/modules

Given that the number of solid solver modules is currently 1 and unlikely to
exceed 3 it is not very useful to maintain solid and fluid sub-directories and
easier to see the correspondence between the solver modules and tutorial cases
without.

applications/solvers/modules/solid/solid.H

@@ -0,0 +1,173 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     | Website:  https://openfoam.org
+    \\  /    A nd           | Copyright (C) 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::solvers::solid
+
+Description
+    Solver module for turbulent flow of compressible fluids for conjugate heat
+    transfer, HVAC and similar applications, with optional mesh motion and mesh
+    topology changes.
+
+SourceFiles
+    solid.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef solid_H
+#define solid_H
+
+#include "solver.H"
+#include "solidThermophysicalTransportModel.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+namespace solvers
+{
+
+/*---------------------------------------------------------------------------*\
+                          Class solid Declaration
+\*---------------------------------------------------------------------------*/
+
+class solid
+:
+    public solver
+{
+
+protected:
+
+    // Control parameters
+
+        scalar maxDi;
+
+        scalar maxDeltaT_;
+
+
+    // Thermophysical properties
+
+        autoPtr<solidThermo> pThermo;
+
+        solidThermo& thermo;
+
+        volScalarField& T;
+
+
+    // Thermophysical transport
+
+        //- Pointer to the solid thermophysical transport model
+        autoPtr<solidThermophysicalTransportModel> thermophysicalTransport;
+
+
+    // Time-step controls
+
+        scalar DiNum;
+
+
+private:
+
+    // Private Member Functions
+
+        //- Read controls
+        void read();
+
+        //- Set rDeltaT for LTS
+        // void setRDeltaT();
+
+        //- Correct the cached Courant numbers
+        void correctDiNum();
+
+
+public:
+
+    //- Runtime type information
+    TypeName("solid");
+
+
+    // Constructors
+
+        //- Construct from region mesh
+        solid(fvMesh& mesh);
+
+        //- Disallow default bitwise copy construction
+        solid(const solid&) = delete;
+
+
+    //- Destructor
+    virtual ~solid();
+
+
+    // Member Functions
+
+        //- Return the current maximum time-step for stable solution
+        virtual scalar maxDeltaT() const;
+
+        //- Called at the start of the time-step, before the PIMPLE loop
+        virtual void preSolve();
+
+        //- Called at the start of the PIMPLE loop to move the mesh
+        virtual bool moveMesh();
+
+        //- Called at the beginning of the PIMPLE loop
+        virtual void prePredictor();
+
+        //- Construct and optionally solve the momentum equation
+        virtual void momentumPredictor();
+
+        //- Construct and solve the energy equation,
+        //  convert to temperature
+        //  and update thermophysical and transport properties
+        virtual void thermophysicalPredictor();
+
+        //- Construct and solve the pressure equation in the PISO loop
+        virtual void pressureCorrector();
+
+        //- Correct the momentum transport modelling
+        //  Newtonian, non-Newtonian or turbulent
+        virtual void momentumTransportCorrector();
+
+        //- Correct the thermophysical transport modelling
+        virtual void thermophysicalTransportCorrector();
+
+        //- Called after the PIMPLE loop at the end of the time-step
+        virtual void postSolve();
+
+
+    // Member Operators
+
+        //- Disallow default bitwise assignment
+        void operator=(const solid&) = delete;
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace solvers
+} // End namespace Foam
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+#endif
+
+// ************************************************************************* //