tmp<fv::convectionScheme<scalar>> mvConvection
                               (
                                   fv::convectionScheme<scalar>::New
                                   (
                                       mesh,
                                       fields,
                                       phi,
                                       mesh.divScheme("div(phi,Yi)")
                                   )
                               );
{
  reaction.correct();
//  dQ = reaction.dQ();
  label inertIndex = -1;
  volScalarField Yt(0.0*Y[0]);
  forAll(Y, i) {
    if (Y[i].name() != inertSpecie) {
      volScalarField& Yi = Y[i];
      diffY[i] = turb.muEff();
      fvScalarMatrix YiEqn
      (
          fvm::ddt(rho, Yi)
          + mvConvection->fvmDiv(phi, Yi)
          - fvm::laplacian(turb.muEff(), Yi)
          ==
          reaction.R(Yi)
          + fvOptions(rho, Yi)
      );

      YiEqn.relax();

      fvOptions.constrain(YiEqn);

      YiEqn.solve("Yi");

      fvOptions.correct(Yi);

      Yi.max(0.0);
      Yt += Yi;
    } else {
      inertIndex = i;
    }
  }

  Y[inertIndex] = scalar(1) - Yt;
  Y[inertIndex].max(0.0);
}
