1 /*---------------------------------------------------------------------------*\
3 \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
5 \\ / A nd | Copyright (C) 2011 OpenFOAM Foundation
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
13 the Free Software Foundation, either version 3 of the License, or
14 (at your 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, see <http://www.gnu.org/licenses/>.
24 \*---------------------------------------------------------------------------*/
27 #include "addToRunTimeSelectionTable.H"
29 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
33 namespace energyScalingFunctions
36 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
38 defineTypeNameAndDebug(sigmoid, 0);
40 addToRunTimeSelectionTable
42 energyScalingFunction,
48 // * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * * //
50 scalar sigmoid::sigmoidScale
57 return 1.0 / (1.0 + exp( scale * (r - shift)));
61 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
66 const dictionary& energyScalingFunctionProperties,
67 const pairPotential& pairPot
70 energyScalingFunction(name, energyScalingFunctionProperties, pairPot),
73 energyScalingFunctionProperties.subDict(typeName + "Coeffs")
75 shift_(readScalar(sigmoidCoeffs_.lookup("shift"))),
76 scale_(readScalar(sigmoidCoeffs_.lookup("scale")))
80 // * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //
82 void sigmoid::scaleEnergy(scalar& e, const scalar r) const
84 e *= sigmoidScale(r, shift_, scale_);
88 bool sigmoid::read(const dictionary& energyScalingFunctionProperties)
90 energyScalingFunction::read(energyScalingFunctionProperties);
93 energyScalingFunctionProperties.subDict(typeName + "Coeffs");
95 sigmoidCoeffs_.lookup("shift") >> shift_;
96 sigmoidCoeffs_.lookup("scale") >> shift_;
102 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
104 } // End namespace energyScalingFunctions
105 } // End namespace Foam
107 // ************************************************************************* //