ArrheniusReactionRateI.H

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#include "ArrheniusReactionRate.H"
#include "physicoChemicalConstants.H"
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
inline Foam::ArrheniusReactionRate::ArrheniusReactionRate
(
    const scalar A,
    const scalar beta,
    const scalar Ta
)
:
    beta_(beta),
    A_(A),
    Ta_(Ta)
{}
 
 
inline Foam::ArrheniusReactionRate::ArrheniusReactionRate
(
    const speciesTable&,
    const dimensionSet& dims,
    const dictionary& dict
)
:
    beta_(dict.lookup<scalar>("beta", dimless)),
    A_(dict.lookup<scalar>("A", dims/pow(dimTemperature, beta_))),
    Ta_
    (
        dict.found("Ta") || !dict.found("Ea")
      ? dict.lookup<scalar>("Ta", dimTemperature)
      : dict.lookup<scalar>("Ea", dimEnergy/dimMoles)
       /constant::physicoChemical::RR.value()
    )
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
inline void Foam::ArrheniusReactionRate::preEvaluate() const
{}
 
 
inline void Foam::ArrheniusReactionRate::postEvaluate() const
{}
 
 
inline Foam::scalar Foam::ArrheniusReactionRate::operator()
(
    const scalar p,
    const scalar T,
    const scalarField&,
    const label
) const
{
    scalar ak = A_;
 
    if (mag(beta_) > vSmall)
    {
        ak *= pow(T, beta_);
    }
 
    if (mag(Ta_) > vSmall)
    {
        ak *= exp(-Ta_/T);
    }
 
    return ak;
}
 
 
inline Foam::scalar Foam::ArrheniusReactionRate::ddT
(
    const scalar p,
    const scalar T,
    const scalarField&,
    const label
) const
{
    scalar ak = A_;
 
    if (mag(beta_) > vSmall)
    {
        ak *= pow(T, beta_);
    }
 
    if (mag(Ta_) > vSmall)
    {
        ak *= exp(-Ta_/T);
    }
 
    return ak*(beta_+Ta_/T)/T;
}
 
 
inline bool Foam::ArrheniusReactionRate::hasDdc() const
{
    return false;
}
 
 
inline void Foam::ArrheniusReactionRate::ddc
(
    const scalar p,
    const scalar T,
    const scalarField& c,
    const label li,
    scalarField& ddc
) const
{
    ddc = 0;
}
 
 
inline void Foam::ArrheniusReactionRate::write(Ostream& os) const
{
    writeEntry(os, "A", A_);
    writeEntry(os, "beta", beta_);
    writeEntry(os, "Ta", Ta_);
}
 
 
inline Foam::Ostream& Foam::operator<<
(
    Ostream& os,
    const ArrheniusReactionRate& arr
)
{
    arr.write(os);
    return os;
}
 
 
// ************************************************************************* //