solvers::incompressibleVoF: New solver module for incompressible two-phase flow with VoF

executed with foamRun for single region simulations of foamMultiRun for
multi-region simulations.  Replaces interFoam and all the corresponding
tutorials have been updated and moved to tutorials/modules/incompressibleVoF.

Both incompressibleVoF and compressibleVoF solver modules are derived from the
common two-phase VoF base-class solvers::VoFSolver which handles the
complexities of VoF interface-compression, boundedness and conservation with
2nd-order schemes in space and time using the semi-implicit MULES limiter and
solution proceedure.  This maximises code re-use, improves readability and
simplifies maintenance.

Class
    Foam::solvers::incompressibleVoF

Description
    Solver module for for 2 incompressible, isothermal immiscible fluids using a
    VOF (volume of fluid) phase-fraction based interface capturing approach,
    with optional mesh motion and mesh topology changes including adaptive
    re-meshing.

    The momentum and other fluid properties are of the "mixture" and a single
    momentum equation is solved.

    Either mixture or two-phase transport modelling may be selected.  In the
    mixture approach a single laminar, RAS or LES model is selected to model the
    momentum stress.  In the Euler-Euler two-phase approach separate laminar,
    RAS or LES selected models are selected for each of the phases.

    Uses the flexible PIMPLE (PISO-SIMPLE) solution for time-resolved and
    pseudo-transient and steady simulations.

    Optional fvModels and fvConstraints are provided to enhance the simulation
    in many ways including adding various sources, Lagrangian
    particles, surface film etc. and constraining or limiting the solution.

SourceFiles
    incompressibleVoF.C

See also
    Foam::solvers::VoFSolver
    Foam::solvers::compressibleVoF

tutorials/modules/incompressibleVoF/DTCHull/system/controlDict

@@ -14,7 +14,9 @@ FoamFile
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
-application     interFoam;
+application     foamRun;
+
+solver          incompressibleVoF;
 
 startFrom       startTime;
 

tutorials/modules/incompressibleVoF/DTCHullMoving/system/controlDict

@@ -14,7 +14,9 @@ FoamFile
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
-application     interFoam;
+application     foamRun;
+
+solver          incompressibleVoF;
 
 startFrom       startTime;
 

tutorials/modules/incompressibleVoF/DTCHullWave/system/controlDict

@@ -14,7 +14,9 @@ FoamFile
 }
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
-application     interFoam;
+application     foamRun;
+
+solver          incompressibleVoF;
 
 startFrom       latestTime;