exponentialRepulsion.C

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    Copyright (C) 2011 OpenFOAM Foundation
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
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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_(exponentialRepulsionCoeffs_.get<scalar>("rm")),
    epsilon_(exponentialRepulsionCoeffs_.get<scalar>("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_.readEntry("rm", rm_);
    exponentialRepulsionCoeffs_.readEntry("epsilon", epsilon_);
 
    return true;
}
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace pairPotentials
} // End namespace Foam
 
// ************************************************************************* //