302 lines
9.3 KiB
C
302 lines
9.3 KiB
C
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/*---------------------------------------------------------------------------*\
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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 held by original author
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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 the
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Free Software Foundation; either version 2 of the License, or (at your
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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, write to the Free Software Foundation,
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Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Application
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smoothMesh
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Description
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Smoothing mesh using Laplacian smoothing
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\*---------------------------------------------------------------------------*/
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#include "argList.H"
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#include "timeSelector.H"
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#include "Time.H"
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#include "fvMesh.H"
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#include "boolList.H"
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#include "emptyPolyPatch.H"
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#include "twoDPointCorrector.H"
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using namespace Foam;
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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int main(int argc, char *argv[])
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{
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timeSelector::addOptions();
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Foam::argList::validOptions.insert("smoothPatches", "");
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# include "setRootCase.H"
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# include "createTime.H"
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instantList timeDirs = timeSelector::select0(runTime, args);
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# include "createMesh.H"
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// bool smoothPatches = args.optionFound("smoothPatches");
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// if(smoothPatches)
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// Info << "Smoothing patches" << nl << endl;
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// Smooth internal points
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const vectorField& oldPoints = mesh.points();
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vectorField newPoints = oldPoints;
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if (mesh.nGeometricD() == 3)
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{
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Info << "3-D mesh" << endl;
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const labelListList& pointEdges = mesh.pointEdges();
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const edgeList& edges = mesh.edges();
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boolList fixedPoints(newPoints.size(), false);
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forAll(mesh.boundaryMesh(), patchI)
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{
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const labelList& meshPoints =
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mesh.boundaryMesh()[patchI].meshPoints();
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forAll(meshPoints, pointI)
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{
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fixedPoints[meshPoints[pointI]] = true;
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}
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}
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scalarField residual(newPoints.size(), 0);
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label counter = 0;
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do
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{
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counter++;
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forAll(newPoints, pointI)
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{
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if (!fixedPoints[pointI])
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{
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vector curNewPoint = vector::zero;
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scalar sumW = 0;
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forAll(pointEdges[pointI], eI)
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{
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label curEdgeIndex = pointEdges[pointI][eI];
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const edge& curEdge = edges[curEdgeIndex];
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vector d =
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newPoints[curEdge.otherVertex(pointI)]
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- newPoints[pointI];
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scalar w = 1.0;
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curNewPoint += w*d;
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sumW += w;
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}
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curNewPoint /= sumW;
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curNewPoint += newPoints[pointI];
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residual[pointI] = mag(curNewPoint - newPoints[pointI]);
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newPoints[pointI] = curNewPoint;
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}
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}
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// smoothed patch points independently
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// but we do not smooth points on the boundary of the patch
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// we reset these points
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// problem: we need to smooth feature edges separately
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// if(smoothPatches)
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// {
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// forAll(mesh.boundaryMesh(), patchI)
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// {
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// const labelList& meshPoints =
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// mesh.boundaryMesh()[patchI].meshPoints();
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// forAll(meshPoints, pointI)
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// {
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// label pointID = meshPoints[pointI];
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// vector curNewPoint = vector::zero;
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// scalar sumW = 0;
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// forAll(pointEdges[pointID], eI)
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// {
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// label curEdgeIndex = pointEdges[pointID][eI];
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// const edge& curEdge = edges[curEdgeIndex];
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// // use only boundary points
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// label otherPointID = curEdge.otherVertex(pointID);
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// if(fixedPoints[otherPointID])
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// {
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// vector d =
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// newPoints[otherPointID]
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// - newPoints[pointID];
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// scalar w = 1.0;
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// curNewPoint += w*d;
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// sumW += w;
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// }
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// }
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// curNewPoint /= sumW;
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// curNewPoint += newPoints[pointID];
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// residual[pointID] = mag(curNewPoint - newPoints[pointID]);
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// newPoints[pointID] = curNewPoint;
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// }
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// // reset boundary points
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// const labelList& boundaryPoints = mesh.boundaryMesh()[patchI].boundaryPoints();
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// forAll(boundaryPoints, bpi)
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// {
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// label boundaryPointID = meshPoints[boundaryPoints[bpi]];
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// newPoints[boundaryPointID] = oldPoints[boundaryPointID];
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// residual[boundaryPointID] = 0.0;
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// }
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// }
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// }
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residual /= max(mag(newPoints - oldPoints) + SMALL);
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}
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while(max(residual) > 1e-3);
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Info << "Internal points, max residual: " << max(residual)
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<< ", num of iterations: " << counter << endl;
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twoDPointCorrector twoDCorrector(mesh);
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twoDCorrector.correctPoints(newPoints);
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}
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else // 2-D
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{
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Info << "2-D mesh" << endl;
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forAll(mesh.boundaryMesh(), patchI)
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{
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if
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(
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mesh.boundaryMesh()[patchI].type()
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== emptyPolyPatch::typeName
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)
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{
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const labelList& bPoints =
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mesh.boundaryMesh()[patchI].boundaryPoints();
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const vectorField& oldPatchPoints =
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mesh.boundaryMesh()[patchI].localPoints();
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vectorField newPatchPoints = oldPatchPoints;
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const labelListList& patchPointEdges =
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mesh.boundaryMesh()[patchI].pointEdges();
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const edgeList& patchEdges =
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mesh.boundaryMesh()[patchI].edges();
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boolList fixedPoints(newPatchPoints.size(), false);
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forAll(bPoints, pointI)
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{
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fixedPoints[bPoints[pointI]] = true;
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}
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scalarField residual(newPatchPoints.size(), 0);
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label counter = 0;
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do
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{
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counter++;
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forAll(newPatchPoints, pointI)
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{
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if (!fixedPoints[pointI])
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{
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vector curNewPatchPoint = vector::zero;
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scalar sumW = 0;
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forAll(patchPointEdges[pointI], eI)
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{
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label curEdgeIndex =
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patchPointEdges[pointI][eI];
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const edge& curEdge = patchEdges[curEdgeIndex];
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vector d =
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newPatchPoints[curEdge.otherVertex(pointI)]
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- newPatchPoints[pointI];
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scalar w = 1.0;
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curNewPatchPoint += w*d;
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sumW += w;
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}
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curNewPatchPoint /= sumW;
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curNewPatchPoint += newPatchPoints[pointI];
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residual[pointI] =
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mag(curNewPatchPoint - newPatchPoints[pointI]);
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newPatchPoints[pointI] = curNewPatchPoint;
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}
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}
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residual /=
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max(mag(newPatchPoints - oldPatchPoints) + SMALL);
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}
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while(max(residual) > 1e-6);
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Info << "Empty points, max residual: " << max(residual)
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<< ", num of iterations: " << counter << endl;
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const labelList& meshPoints =
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mesh.boundaryMesh()[patchI].meshPoints();
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forAll(meshPoints, pointI)
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{
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newPoints[meshPoints[pointI]] = newPatchPoints[pointI];
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}
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}
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}
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}
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twoDPointCorrector twoDCorrector(mesh);
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twoDCorrector.correctPoints(newPoints);
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mesh.movePoints(newPoints);
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runTime++;
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runTime.write();
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Info<< "End\n" << endl;
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return 0;
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}
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// ************************************************************************* //
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