ode.C

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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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    \\  /    A nd           | Copyright (C) 2011-2016 OpenFOAM Foundation
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#include "ode.H"
#include "chemistryModel.H"

// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //

template<class ChemistryModel>
Foam::ode<ChemistryModel>::ode
(
    const fvMesh& mesh,
    const word& phaseName
)
:
    chemistrySolver<ChemistryModel>(mesh, phaseName),
    coeffsDict_(this->subDict("odeCoeffs")),
    odeSolver_(ODESolver::New(*this, coeffsDict_)),
    cTp_(this->nEqns())
{}


// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //

template<class ChemistryModel>
Foam::ode<ChemistryModel>::~ode()
{}


// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //

template<class ChemistryModel>
void Foam::ode<ChemistryModel>::solve
(
    scalarField& c,
    scalar& T,
    scalar& p,
    scalar& deltaT,
    scalar& subDeltaT
) const
{
    // Reset the size of the ODE system to the simplified size when mechanism
    // reduction is active
    if (odeSolver_->resize())
    {
        odeSolver_->resizeField(cTp_);
    }

    const label nSpecie = this->nSpecie();

    // Copy the concentration, T and P to the total solve-vector
    for (int i=0; i<nSpecie; i++)
    {
        cTp_[i] = c[i];
    }
    cTp_[nSpecie] = T;
    cTp_[nSpecie+1] = p;

    odeSolver_->solve(0, deltaT, cTp_, subDeltaT);

    for (int i=0; i<nSpecie; i++)
    {
        c[i] = max(0.0, cTp_[i]);
    }
    T = cTp_[nSpecie];
    p = cTp_[nSpecie+1];
}


// ************************************************************************* //