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289 lines
8.7 KiB
C++
289 lines
8.7 KiB
C++
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 2014-2016 OpenFOAM Foundation
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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Class
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Foam::medialAxisMeshMover
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Description
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Mesh motion solver that uses a medial axis algorithm to work
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out a fraction between the (nearest point on a) moving surface
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and the (nearest point on a) fixed surface.
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This fraction is then used to scale the motion. Use
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- fixedValue on all moving patches
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- zeroFixedValue on stationary patches
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- slip on all slipping patches
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SourceFiles
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medialAxisMeshMover.C
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\*---------------------------------------------------------------------------*/
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#ifndef medialAxisMeshMover_H
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#define medialAxisMeshMover_H
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#include "externalDisplacementMeshMover.H"
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#include "motionSmootherAlgo.H"
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#include "autoLayerDriver.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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class pointData;
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/*---------------------------------------------------------------------------*\
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Class medialAxisMeshMover Declaration
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\*---------------------------------------------------------------------------*/
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class medialAxisMeshMover
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:
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public externalDisplacementMeshMover
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{
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// Private data
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const labelList adaptPatchIDs_;
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autoPtr<indirectPrimitivePatch> adaptPatchPtr_;
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//- Scale factor for displacement
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pointScalarField scale_;
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//- Starting mesh position
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pointField oldPoints_;
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//- Mesh mover algorithm
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motionSmootherAlgo meshMover_;
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// Pre-calculated medial axis information
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//- Normal of nearest wall. Where this normal changes direction
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// defines the medial axis
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pointVectorField dispVec_;
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//- Ratio of medial distance to wall distance.
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// (1 at wall, 0 at medial axis)
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pointScalarField medialRatio_;
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//- Distance to nearest medial axis point
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pointScalarField medialDist_;
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//- Location on nearest medial axis point
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pointVectorField medialVec_;
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// Private Member Functions
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//- Extract fixed-value patchfields
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static labelList getFixedValueBCs(const pointVectorField&);
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//- Extract bc types. Replace fixedValue derivatives with fixedValue
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wordList getPatchFieldTypes(const pointVectorField& fld);
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//- Construct patch on selected patches
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static autoPtr<indirectPrimitivePatch> getPatch
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(
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const polyMesh&,
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const labelList&
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);
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// Calculation of medial axis information
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//- Smooth normals on patch
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void smoothPatchNormals
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(
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const label nSmoothDisp,
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const PackedBoolList& isMasterPoint,
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const PackedBoolList& isMasterEdge,
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pointField& normals
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) const;
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//- Smooth normals on interior
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void smoothNormals
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(
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const label nSmoothDisp,
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const PackedBoolList& isMasterPoint,
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const PackedBoolList& isMasterEdge,
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const labelList& fixedPoints,
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pointVectorField& normals
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) const;
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//- Is mesh edge on a cusp of displacement
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bool isMaxEdge
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(
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const List<pointData>& pointWallDist,
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const label edgeI,
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const scalar minCos
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) const;
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//- Initialise medial axis. Uses pointDisplacement field only
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// for boundary types, not values.
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void update(const dictionary&);
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// Calculation of mesh movement
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//- Unmark extrusion at given point
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static bool unmarkExtrusion
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(
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const label patchPointI,
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pointField& patchDisp,
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List<autoLayerDriver::extrudeMode>& extrudeStatus
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);
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//- Synchronise extrusion
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void syncPatchDisplacement
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(
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const scalarField& minThickness,
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pointField& patchDisp,
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List<autoLayerDriver::extrudeMode>& extrudeStatus
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) const;
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void smoothLambdaMuDisplacement
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(
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const label nSmoothDisp,
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const PackedBoolList& isMasterPoint,
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const PackedBoolList& isMasterEdge,
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vectorField& displacement
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) const;
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void minSmoothField
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(
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const label nSmoothDisp,
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const PackedBoolList& isMasterPoint,
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const PackedBoolList& isMasterEdge,
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const scalarField& fieldMin,
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scalarField& field
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) const;
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//- Stop layer growth at feature edges
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void handleFeatureAngleLayerTerminations
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(
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const scalar minCos,
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const PackedBoolList& isMasterPoint,
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const labelList& meshEdges,
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List<autoLayerDriver::extrudeMode>& extrudeStatus,
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pointField& patchDisp,
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label& nPointCounter
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) const;
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//- Find isolated islands (points, edges and faces and layer
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// terminations) in the layer mesh and stop any layer growth
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// at these points
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void findIsolatedRegions
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(
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const scalar minCosLayerTermination,
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const bool detectExtrusionIsland,
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const PackedBoolList& isMasterPoint,
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const PackedBoolList& isMasterEdge,
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const labelList& meshEdges,
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const scalarField& minThickness,
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List<autoLayerDriver::extrudeMode>& extrudeStatus,
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pointField& patchDisp
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) const;
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//- Calculate desired displacement. Modifies per-patch displacement
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// and calculates displacement for whole mesh
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// (in pointDisplacement)
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void calculateDisplacement
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(
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const dictionary&,
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const scalarField& minThickness,
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List<autoLayerDriver::extrudeMode>& extrudeStatus,
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pointField& patchDisp
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);
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//- Move mesh according to calculated displacement
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bool shrinkMesh
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const dictionary& meshQualityDict,
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const label nAllowableErrors,
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labelList& checkFaces
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);
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//- Disallow default bitwise copy construct
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medialAxisMeshMover(const medialAxisMeshMover&);
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//- Disallow default bitwise assignment
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void operator=(const medialAxisMeshMover&);
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public:
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//- Runtime type information
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TypeName("displacementMedialAxis");
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// Constructors
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//- Construct from dictionary and displacement field
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medialAxisMeshMover
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(
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const dictionary& dict,
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const List<labelPair>& baffles,
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pointVectorField& pointDisplacement
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);
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// Destructor
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virtual ~medialAxisMeshMover();
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// Member Functions
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//- Move mesh using current pointDisplacement boundary values.
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// Return true if succesful (errors on checkFaces less than
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// allowable). Updates pointDisplacement.
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virtual bool move
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const dictionary&,
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const label nAllowableErrors,
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labelList& checkFaces
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);
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//- Update local data for geometry changes
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virtual void movePoints(const pointField&);
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//- Update local data for topology changes
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virtual void updateMesh(const mapPolyMesh&)
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{
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NotImplemented;
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}
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};
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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} // End namespace Foam
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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#endif
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// ************************************************************************* //
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