Creation of OpenFOAM-dev repository 15/04/2008

2025-11-28 03:28:01 +00:00 · 2008-04-15 18:56:58 +01:00
commit 3170c7c0c9
9896 changed files with 4016171 additions and 0 deletions
--- a/src/errorEstimation/evaluateError/evaluateError.C
+++ b/src/errorEstimation/evaluateError/evaluateError.C
@ -0,0 +1,165 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 1991-2007 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 2 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, write to the Free Software Foundation,
+    Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+\*---------------------------------------------------------------------------*/
+
+#include "evaluateError.H"
+#include "volFields.H"
+#include "surfaceFields.H"
+#include "refineCell.H"
+
+
+// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
+
+// Construct null
+Foam::evaluateError::evaluateError()
+:
+    unsplitFaces_(),
+    refCells_()
+{}
+
+
+// Construct from components
+Foam::evaluateError::evaluateError
+(
+    const volScalarField& cellError,
+    const volVectorField& gradTheta,
+    const surfaceScalarField& faceError,
+    const labelList& candidateFaces
+)
+:
+    unsplitFaces_(candidateFaces.size()),
+    refCells_()
+{
+    const polyMesh& mesh = cellError.mesh();
+
+    // picks up the error field and the gradient of the variable
+    // and appends lists of cells to refine/unrefine based on the width of
+    // standard deviation of the error distribution
+
+    // calculate the average error
+    scalar avgError = cellError.average().value();
+
+    scalar squareError = sqr(cellError)().average().value();
+    scalar deviation = sqrt(squareError - sqr(avgError));
+
+    Info<< "avgError:" << avgError
+        << "  squareError:" << squareError
+        << "  deviation:" << deviation
+        << endl;
+
+    scalar ref = avgError + deviation;
+    scalar unref = avgError - deviation;
+
+    Info<< "evaluateError : refinement criterion : " << ref << endl
+        << "                unrefinement criterion : " << unref << endl;
+
+    // Coarsen mesh first.
+    // Find out set of candidateFaces where error is above crit.
+
+    // Construct to filter unrefinement pattern
+//    removeFaces faceRemover(mesh);
+
+    // Keep track of unrefinement pattern.
+    boolList markedFace(mesh.nFaces(), false);
+
+    label unsplitFaceI = 0;
+
+    // Subset candidate faces and update refinement pattern interference pattern
+    forAll(candidateFaces, candidateFaceI)
+    {
+        label faceI = candidateFaces[candidateFaceI];
+
+        if (markedFace[faceI])
+        {
+            Info<< "evaluateError : protected candidate face:" << faceI
+                << endl;
+        }
+        else
+        {
+//            if (faceError[faceI] < unref)
+            if (unsplitFaceI < (candidateFaces.size()/2 + 1))
+            {
+                unsplitFaces_[unsplitFaceI++] = faceI;
+
+//                faceRemover.markAffectedFaces(faceI, markedFace);
+            }
+        }
+    }
+
+    unsplitFaces_.setSize(unsplitFaceI);
+
+    // Now we have:
+    // -unsplitFaces_: all the faces that will be removed 
+    // -markedFace   : all the faces affected by this removal.
+    // From markedFace protect the cells using them.
+
+    boolList markedCells(mesh.nCells(), false);
+
+//    forAll(markedFace, faceI)
+//    {
+//        if (markedFace[faceI])
+//        {
+//            markedCells[mesh.faceOwner()[faceI]] = true;
+//
+//            if (mesh.isInternalFace(faceI))
+//            {
+//                markedCells[mesh.faceNeighbour()[faceI]] = true;
+//            }
+//        }
+//    }
+
+    // Select the cells that need to be split.
+    // Two pass: count first, select later.
+
+    label refCellI = 0;
+
+    forAll(cellError, cellI)
+    {
+        if ((cellError[cellI] > ref) && !markedCells[cellI])
+        {
+            refCellI++;
+        }
+    }
+
+    refCells_.setSize(refCellI);
+
+    refCellI = 0;
+
+    forAll(cellError, cellI)
+    {
+        if ((cellError[cellI] > ref) && !markedCells[cellI])
+        {
+            refCells_[refCellI++] = refineCell(cellI, gradTheta[cellI]);
+        }
+    }
+
+    Info<< "evaluateError : selected " << unsplitFaces_.size()
+        << " faces out of " << candidateFaces.size() << " for removal" << endl;
+    Info<< "evaluateError : selected " << refCells_.size()
+        << " cells out of " << cellError.size() << " for refinement" << endl;
+}
+
+
+// ************************************************************************* //