applications/solvers/combustion/PDRFoam/ftEqn.H

   1 if (composition.contains("ft"))
   2 {
   3     volScalarField& ft = composition.Y("ft");
   4
   5     solve
   6     (
   7         betav*fvm::ddt(rho, ft)
   8       + mvConvection->fvmDiv(phi, ft)
   9       - fvm::laplacian(Db, ft)
  10     );
  11 }