1 /*---------------------------------------------------------------------------*\
3 \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
5 \\ / A nd | Copyright held by original author
7 -------------------------------------------------------------------------------
9 This file is part of OpenFOAM.
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12 under the terms of the GNU General Public License as published by the
13 Free Software Foundation; either version 2 of the License, or (at your
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16 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
17 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
18 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
21 You should have received a copy of the GNU General Public License
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23 Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
25 \*---------------------------------------------------------------------------*/
27 #include "maitlandSmith.H"
28 #include "addToRunTimeSelectionTable.H"
30 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
34 namespace pairPotentials
37 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
39 defineTypeNameAndDebug(maitlandSmith, 0);
41 addToRunTimeSelectionTable
49 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
51 maitlandSmith::maitlandSmith
54 const dictionary& maitlandSmith
57 pairPotential(name, maitlandSmith),
58 maitlandSmithCoeffs_(maitlandSmith.subDict(typeName + "Coeffs")),
59 m_(readScalar(maitlandSmithCoeffs_.lookup("m"))),
60 gamma_(readScalar(maitlandSmithCoeffs_.lookup("gamma"))),
61 rm_(readScalar(maitlandSmithCoeffs_.lookup("rm"))),
62 epsilon_(readScalar(maitlandSmithCoeffs_.lookup("epsilon")))
68 // * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //
70 scalar maitlandSmith::unscaledEnergy(const scalar r) const
72 scalar nr = (m_ + gamma_*(r/rm_ - 1.0));
76 (6.0 / (nr - 6.0))*Foam::pow(r/rm_, -nr)
77 - (nr / (nr - 6.0))*Foam::pow(r/rm_, -6)
82 bool maitlandSmith::read(const dictionary& maitlandSmith)
84 pairPotential::read(maitlandSmith);
86 maitlandSmithCoeffs_ = maitlandSmith.subDict(typeName + "Coeffs");
88 maitlandSmithCoeffs_.lookup("m") >> m_;
89 maitlandSmithCoeffs_.lookup("gamma") >> gamma_;
90 maitlandSmithCoeffs_.lookup("rm") >> rm_;
91 maitlandSmithCoeffs_.lookup("epsilon") >> epsilon_;
97 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
99 } // End namespace pairPotentials
100 } // End namespace Foam
102 // ************************************************************************* //