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.
11 OpenFOAM is free software; you can redistribute it and/or modify it
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
14 option) any later version.
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
22 along with OpenFOAM; if not, write to the Free Software Foundation,
23 Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
25 \*---------------------------------------------------------------------------*/
28 #include "addToRunTimeSelectionTable.H"
30 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
34 namespace energyScalingFunctions
37 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
39 defineTypeNameAndDebug(sigmoid, 0);
41 addToRunTimeSelectionTable
43 energyScalingFunction,
49 // * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * * //
51 scalar sigmoid::sigmoidScale
58 return 1.0 / (1.0 + exp( scale * (r - shift)));
62 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
67 const dictionary& energyScalingFunctionProperties,
68 const pairPotential& pairPot
71 energyScalingFunction(name, energyScalingFunctionProperties, pairPot),
74 energyScalingFunctionProperties.subDict(typeName + "Coeffs")
76 shift_(readScalar(sigmoidCoeffs_.lookup("shift"))),
77 scale_(readScalar(sigmoidCoeffs_.lookup("scale")))
81 // * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //
83 void sigmoid::scaleEnergy(scalar& e, const scalar r) const
85 e *= sigmoidScale(r, shift_, scale_);
89 bool sigmoid::read(const dictionary& energyScalingFunctionProperties)
91 energyScalingFunction::read(energyScalingFunctionProperties);
94 energyScalingFunctionProperties.subDict(typeName + "Coeffs");
96 sigmoidCoeffs_.lookup("shift") >> shift_;
97 sigmoidCoeffs_.lookup("scale") >> shift_;
103 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
105 } // End namespace energyScalingFunctions
106 } // End namespace Foam
108 // ************************************************************************* //