/usr/include/freefoam/OpenFOAM/faceTemplates.C is in libfreefoam-dev 0.1.0+dfsg-1build1.
This file is owned by root:root, with mode 0o644.
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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 1991-2010 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 "face.H"
#include <OpenFOAM/DynamicList.H>
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
template<unsigned SizeInc, unsigned SizeMult, unsigned SizeDiv>
Foam::label Foam::face::triangles
(
const pointField& points,
DynamicList<face, SizeInc, SizeMult, SizeDiv>& triFaces
) const
{
label triI = triFaces.size();
label quadI = 0;
faceList quadFaces;
// adjust the addressable size (and allocate space if needed)
triFaces.setSize(triI + nTriangles());
return split(SPLITTRIANGLE, points, triI, quadI, triFaces, quadFaces);
}
template<class Type>
Type Foam::face::average
(
const pointField& meshPoints,
const Field<Type>& f
) const
{
// Calculate the average by breaking the face into triangles and
// area-weighted averaging their averages
// If the face is a triangle, do a direct calculation
if (size() == 3)
{
return
(1.0/3.0)
*(
f[operator[](0)]
+ f[operator[](1)]
+ f[operator[](2)]
);
}
label nPoints = size();
point centrePoint = point::zero;
Type cf = pTraits<Type>::zero;
for (register label pI=0; pI<nPoints; pI++)
{
centrePoint += meshPoints[operator[](pI)];
cf += f[operator[](pI)];
}
centrePoint /= nPoints;
cf /= nPoints;
scalar sumA = 0;
Type sumAf = pTraits<Type>::zero;
for (register label pI=0; pI<nPoints; pI++)
{
// Calculate 3*triangle centre field value
Type ttcf =
(
f[operator[](pI)]
+ f[operator[]((pI + 1) % nPoints)]
+ cf
);
// Calculate 2*triangle area
scalar ta = Foam::mag
(
(meshPoints[operator[](pI)] - centrePoint)
^ (meshPoints[operator[]((pI + 1) % nPoints)] - centrePoint)
);
sumA += ta;
sumAf += ta*ttcf;
}
if (sumA > VSMALL)
{
return sumAf/(3*sumA);
}
else
{
return cf;
}
}
// ************************ vim: set sw=4 sts=4 et: ************************ //
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