exponentialRepulsion.C

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
     \\/     M anipulation  |
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License
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#include "exponentialRepulsion.H"
#include "addToRunTimeSelectionTable.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace pairPotentials
{
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
defineTypeNameAndDebug(exponentialRepulsion, 0);
 
addToRunTimeSelectionTable
(
    pairPotential,
    exponentialRepulsion,
    dictionary
);
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
exponentialRepulsion::exponentialRepulsion
(
    const word& name,
    const dictionary& exponentialRepulsion
)
:
    pairPotential(name, exponentialRepulsion),
    exponentialRepulsionCoeffs_
    (
        exponentialRepulsion.subDict(typeName + "Coeffs")
    ),
    rm_(readScalar(exponentialRepulsionCoeffs_.lookup("rm"))),
    epsilon_(readScalar(exponentialRepulsionCoeffs_.lookup("epsilon")))
{
    setLookupTables();
}
 
 
// * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //
 
scalar exponentialRepulsion::unscaledEnergy(const scalar r) const
{
    return epsilon_ * exp(-r/rm_);
}
 
 
bool exponentialRepulsion::read(const dictionary& exponentialRepulsion)
{
    pairPotential::read(exponentialRepulsion);
 
    exponentialRepulsionCoeffs_ =
        exponentialRepulsion.subDict(typeName + "Coeffs");
 
    exponentialRepulsionCoeffs_.lookup("rm") >> rm_;
    exponentialRepulsionCoeffs_.lookup("epsilon") >> epsilon_;
 
    return true;
}
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace pairPotentials
} // End namespace Foam
 
// ************************************************************************* //