ENH: Added tools to generate simplified meshes used to check case set-ups

src/finiteVolume/Make/files

@@ -3,6 +3,8 @@ fvMesh/fvMesh.C
 
 fvMesh/singleCellFvMesh/singleCellFvMesh.C
 
+fvMesh/dummyFvMesh/dummyFvMesh.C
+
 fvBoundaryMesh = fvMesh/fvBoundaryMesh
 $(fvBoundaryMesh)/fvBoundaryMesh.C
 

src/finiteVolume/fvMesh/dummyFvMesh/dummyFvMesh.C

+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2018 OpenCFD Ltd.
+     \\/     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 "dummyFvMesh.H"
+#include "Time.H"
+#include "polyBoundaryMeshEntries.H"
+#include "IOobjectList.H"
+#include "fieldDictionary.H"
+#include "topoSet.H"
+
+#include "calculatedFvPatchField.H"
+#include "emptyPolyPatch.H"
+#include "processorPolyPatch.H"
+#include "processorCyclicPolyPatch.H"
+#include "cyclicPolyPatch.H"
+#include "cyclicAMIPolyPatch.H"
+#include "cyclicACMIPolyPatch.H"
+
+#include "fvPatchField.H"
+#include "pointPatchField.H"
+
+// * * * * * * * * * * * * * * * Static Members  * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+defineTypeNameAndDebug(dummyFvMesh, 0);
+}
+
+
+// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
+
+bool Foam::dummyFvMesh::fvPatchFieldExists(const word& patchType)
+{
+    if
+    (
+        fvPatchField<scalar>::dictionaryConstructorTablePtr_->found(patchType)
+     || fvPatchField<vector>::dictionaryConstructorTablePtr_->found(patchType)
+     || fvPatchField<sphericalTensor>::
+            dictionaryConstructorTablePtr_->found(patchType)
+     || fvPatchField<symmTensor>::
+            dictionaryConstructorTablePtr_->found(patchType)
+     || fvPatchField<tensor>::dictionaryConstructorTablePtr_->found(patchType)
+    )
+    {
+        return true;
+    }
+
+    return false;
+}
+
+Foam::autoPtr<Foam::fvMesh> Foam::dummyFvMesh::singleCellMesh
+(
+    const Time& runTime,
+    const scalar d
+)
+{
+    pointField points(8);
+    points[0] = vector(0, 0, 0);
+    points[1] = vector(d, 0, 0);
+    points[2] = vector(d, d, 0);
+    points[3] = vector(0, d, 0);
+    points[4] = vector(0, 0, d);
+    points[5] = vector(d, 0, d);
+    points[6] = vector(d, d, d);
+    points[7] = vector(0, d, d);
+
+    faceList faces = cellModel::ref(cellModel::HEX).modelFaces();
+
+    autoPtr<fvMesh> meshPtr
+    (
+        new Foam::fvMesh
+        (
+            IOobject
+            (
+                polyMesh::defaultRegion,
+                runTime.timeName(),
+                runTime,
+                IOobject::READ_IF_PRESENT,
+                IOobject::NO_WRITE
+            ),
+            std::move(points),
+            std::move(faces),
+            labelList(6, Zero),
+            labelList()
+        )
+    );
+
+    fvMesh& mesh = meshPtr();
+
+    List<polyPatch*> patches(1);
+
+    patches[0] = new emptyPolyPatch
+    (
+        "boundary",
+        6,
+        0,
+        0,
+        mesh.boundaryMesh(),
+        emptyPolyPatch::typeName
+    );
+
+    mesh.addFvPatches(patches);
+
+    return meshPtr;
+}
+
+
+bool Foam::dummyFvMesh::setPatchEntries
+(
+    const Time& runTime,
+    const word& instance,
+    dictionary& patchEntries,
+    label& nPatchWithFace
+)
+{
+    IOobject boundaryIO
+    (
+        "boundary",
+        instance,
+        polyMesh::meshSubDir,
+        runTime,
+        IOobject::MUST_READ,
+        IOobject::NO_WRITE,
+        false
+    );
+
+    const wordHashSet constraintPatches(polyPatch::constraintTypes());
+
+    if (boundaryIO.typeHeaderOk<polyBoundaryMesh>(true))
+    {
+        polyBoundaryMeshEntries allPatchEntries(boundaryIO);
+
+        Info<< "Creating dummy mesh using " << allPatchEntries.path() << endl;
+
+        for (const entry& e : allPatchEntries)
+        {
+            const word type(e.dict().lookup("type"));
+
+            if (!constraintPatches.found(type))
+            {
+                if (readLabel(e.dict().lookup("nFaces")))
+                {
+                    ++nPatchWithFace;
+                }
+                patchEntries.add(e.keyword(), e.dict());
+            }
+        }
+
+        return true;
+    }
+    else
+    {
+        // No boundary file - try reading from a field
+        IOobjectList objects(runTime, runTime.timeName());
+
+        if (objects.empty())
+        {
+            // No fields - cannot create a mesh
+            return false;
+        }
+
+        const IOobject& io = *objects.begin()();
+
+        if (io.instance() == runTime.constant())
+        {
+            FatalErrorInFunction
+                << "No time directories found for field reading"
+                << exit(FatalError);
+        }
+
+        const fieldDictionary fieldDict(io, io.headerClassName());
+
+        Info<< "Creating dummy mesh from field "
+            << fieldDict.objectPath()
+            << endl;
+
+        const dictionary& boundaryFieldDict =
+            fieldDict.subDict("boundaryField");
+
+        for (const entry& e : boundaryFieldDict)
+        {
+            const word type(e.dict().lookup("type"));
+
+            if (fvPatchFieldExists(type))
+            {
+                if (!constraintPatches.found(type))
+                {
+                    ++nPatchWithFace;
+                    dictionary dummyEntries;
+                    dummyEntries.add("startFace", 0);
+                    dummyEntries.add("nFaces", 1);
+                    dummyEntries.add("type", "wall"); // default to wall type
+
+                    patchEntries.add(e.keyword(), dummyEntries);
+                }
+            }
+            else
+            {
+                Info<< "Ignoring unknown patch type " << type << endl;
+            }
+        }
+
+        return false;
+    }
+}
+
+
+Foam::autoPtr<Foam::fvMesh> Foam::dummyFvMesh::equivalent1DMesh
+(
+    const Time& runTime
+)
+{
+    DebugInfo << "Constructing 1-D mesh" << nl << endl;
+
+    const word instance =
+        runTime.findInstance
+        (
+            polyMesh::meshSubDir,
+            "boundary",
+            IOobject::READ_IF_PRESENT
+        );
+
+    // Read patches - filter out proc patches for parallel runs
+    dictionary patchEntries;
+    label nPatchWithFace = 0;
+    bool createFromMesh =
+        setPatchEntries(runTime, instance, patchEntries, nPatchWithFace);
+
+    const label nPatch = patchEntries.size();
+
+    DebugPout << "Read " << nPatch << " patches" << endl;
+
+    /*
+               3 ---- 7
+          f5   |\     |\   f2
+          |    | 2 ---- 6   \
+          |    0 |--- 4 |    \
+          |     \|     \|    f3
+          f4     1 ---- 5
+
+                f0 ----- f1
+    */
+
+    // Create mesh with nPatchWithFace hex cells
+    // - hex face 1: set internal face to link to next hex cell
+    // - hex face 2,3,4,5: set to boundary condition
+    //
+    // TODO: Coupled patches:
+    // - separated/collocated cyclic - faces 2 and 3
+    // - rotational cyclic - convert to separated and warn not handled?
+    // - proc patches - faces need to be collocated?
+
+    pointField points(nPatchWithFace*4 + 4);
+    faceList faces(nPatchWithFace*5 + 1);
+
+    labelList owner(faces.size(), label(-1));
+    labelList neighbour(owner);
+
+    vector dx(Zero);
+    {
+        // Determine the mesh bounds
+        IOobject pointsIO
+        (
+            "points",
+            instance,
+            polyMesh::meshSubDir,
+            runTime,
+            IOobject::MUST_READ,
+            IOobject::NO_WRITE,
+            false
+        );
+
+        scalar dxi = 0;
+        scalar dyi = 0;
+        scalar dzi = 0;
+        point origin(point::zero);
+
+        if (pointsIO.typeHeaderOk<vectorIOField>(true))
+        {
+            const pointIOField meshPoints(pointsIO);
+
+            boundBox meshBb(meshPoints, true);
+
+            Info<< "Mesh bounds: " << meshBb << endl;
+
+            origin = meshBb.min();
+            vector span = meshBb.span();
+            dxi = span.x()/scalar(nPatchWithFace);
+            dyi = span.y();
+            dzi = span.z();
+        }
+        else
+        {
+            scalar Lref = GREAT;
+            origin = point(-Lref, -Lref, -Lref);
+            dxi = 2.0*Lref/scalar(nPatchWithFace);
+            dyi = Lref;
+            dzi = Lref;
+        }
+
+        dx = vector(dxi, 0, 0);
+        const vector dy(0, dyi, 0);
+        const vector dz(0, 0, dzi);
+
+        // End face
+        points[0] = origin;
+        points[1] = origin + dy;
+        points[2] = origin + dy + dz;
+        points[3] = origin + dz;
+    }
+
+    label n = 4;
+    for (label i = 1; i <= nPatchWithFace; ++i)
+    {
+        const vector idx(i*dx);
+        points[i*n] = points[0] + idx;
+        points[i*n + 1] = points[1] + idx;
+        points[i*n + 2] = points[2] + idx;
+        points[i*n + 3] = points[3] + idx;
+    }
+
+    if (debug) Pout<< "points:" << points << endl;
+
+    label facei = 0;
+
+    // Internal faces first
+    for (label i = 0; i < nPatchWithFace - 1; ++i)
+    {
+        label o = i*4;
+        faces[facei] = face({4 + o, 5 + o, 6 + o, 7 + o});
+        owner[facei] = i;
+        neighbour[facei] = i + 1;
+        ++facei;
+    }
+
+    // Boundary conditions
+    for (label i = 0; i < nPatchWithFace; ++i)
+    {
+        label o = i*4;
+        faces[facei] = face({0 + o, 4 + o, 7 + o, 3 + o});
+        owner[facei] = i;
+        ++facei;
+
+        faces[facei] = face({0 + o, 1 + o, 5 + o, 4 + o});
+        owner[facei] = i;
+        ++facei;
+
+        faces[facei] = face({1 + o, 2 + o, 6 + o, 5 + o});
+        owner[facei] = i;
+        ++facei;
+
+        faces[facei] = face({3 + o, 7 + o, 6 + o, 2 + o});
+        owner[facei] = i;
+        ++facei;
+    }
+    {
+        // End caps
+        faces[facei] = face({0, 3, 2, 1});
+        owner[facei] = 0;
+        ++facei;
+
+        label o = 4*nPatchWithFace;
+        faces[facei] = face({0 + o, 1 + o, 2 + o, 3 + o});
+        owner[facei] = nPatchWithFace - 1;
+        ++facei;
+    }
+
+    DebugPout
+        << "faces:" << faces << nl
+        << "owner:" << owner << nl
+        << "neighbour:" << neighbour
+        << endl;
+
+    autoPtr<fvMesh> meshPtr
+    (
+        new Foam::fvMesh
+        (
+            IOobject
+            (
+                fvMesh::defaultRegion,
+                runTime.constant(),
+                runTime,
+                IOobject::NO_READ, // Do not read any existing mesh
+                IOobject::NO_WRITE
+            ),
+            std::move(points),
+            std::move(faces),
+            std::move(owner),
+            std::move(neighbour)
+        )
+    );
+
+    Foam::fvMesh& mesh = meshPtr();
+
+    // Workaround to read fvSchemes and fvSolution
+    {
+        mesh.fvSchemes::readOpt() = IOobject::MUST_READ;
+        mesh.fvSchemes::read();
+        mesh.fvSolution::readOpt() = IOobject::MUST_READ;
+        mesh.fvSolution::read();
+    }
+
+    List<polyPatch*> patches(nPatch + 1);
+
+    label nInternalFace = nPatchWithFace - 1;
+    label startFace = nInternalFace;
+    label entryi = 0;
+    for (const entry& e : patchEntries)
+    {
+        // Re-create boundary types, but reset nFaces and startFace settings
+        dictionary patchDict = e.dict();
+        const word& patchName = e.keyword();
+
+        DebugPout << "Setting " << patchName << endl;
+
+        label nFaces0 = readLabel(patchDict.lookup("nFaces"));
+
+        if (nFaces0)
+        {
+            // Only set to 4 faces if there were faces in the original patch
+            nFaces0 = 4;
+            patchDict.set("nFaces", nFaces0);
+        }
+
+        patchDict.set("startFace", startFace);
+        patches[entryi] =
+            polyPatch::New
+            (
+                patchName,
+                patchDict,
+                entryi,
+                mesh.boundaryMesh()
+            ).ptr();
+
+        ++entryi;
+        startFace += nFaces0;
+    }
+
+    patches.last() = new emptyPolyPatch
+    (
+        typeName + ":default",              // name
+        2,                                  // number of faces
+        nInternalFace + 4*nPatchWithFace,   // start face
+        nPatch - 1,                         // index in boundary list
+        mesh.boundaryMesh(),                // polyBoundaryMesh
+        emptyPolyPatch::typeName            // patchType
+    );
+
+    mesh.addFvPatches(patches);
+
+    if (debug)
+    {
+        Pout<< "patches:" << nl << endl;
+        forAll(patches, patchi)
+        {
+            Pout<< "patch: " << patches[patchi]->name() << nl
+                << *patches[patchi] << endl;
+        }
+    }
+
+    if (createFromMesh)
+    {
+        // Initialise the zones
+        initialiseZone<pointZoneMesh>("point", instance, mesh.pointZones());
+        initialiseZone<faceZoneMesh>("face", instance, mesh.faceZones());
+        initialiseZone<cellZoneMesh>("cell", instance, mesh.cellZones());
+
+        // Dummy sets created on demand
+        topoSet::disallowGenericSets = 1;
+    }
+    else
+    {
+        // Dummy zones and sets created on demand
+        cellZoneMesh::disallowGenericZones = 1;
+        topoSet::disallowGenericSets = 1;
+    }
+
+    if (debug)
+    {
+        mesh.setInstance(runTime.timeName());
+        mesh.objectRegistry::write();
+    }
+
+    return meshPtr;
+}
+
+
+// ************************************************************************* //

src/finiteVolume/fvMesh/dummyFvMesh/dummyFvMesh.H

+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2018 OpenCFD Ltd.
+     \\/     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::dummyFvMesh
+
+Description
+    Functions to generate dummy finite volume meshes
+
+SourceFiles
+    dummyFvMesh.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef dummyFvMesh_H
+#define dummyFvMesh_H
+
+#include "className.H"
+#include "autoPtr.H"
+#include "HashSet.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+
+class fvMesh;
+class Time;
+template<class Type> class List;
+
+/*---------------------------------------------------------------------------*\
+                         Class dummyFvMesh Declaration
+\*---------------------------------------------------------------------------*/
+
+class dummyFvMesh
+{
+    //- Helper function to see if the patch type exists in the run-time
+    //- selection tables
+    static bool fvPatchFieldExists(const word& patchType);
+
+    //- Set the patch information. Returns true if setting based on a real mesh
+    static bool setPatchEntries
+    (
+        const Time& runTime,
+        const word& instance,
+        dictionary& patchEntries,
+        label& nPatchWithFace
+    );
+
+    //- Helper function to initialise empty zones
+    template<class ZoneMeshType>
+    static void initialiseZone
+    (
+        const word& zoneTypeName,
+        const fileName& instance,
+        ZoneMeshType& zoneType
+    );
+
+
+public:
+
+    ClassName("dummyFvMesh");
+
+    //- Create a single cell mesh with empty boundary conditions all-round
+    static autoPtr<fvMesh> singleCellMesh
+    (
+        const Time& runTime,
+        const scalar d = 1
+    );
+