[N. A.]

1. What is a passiveparticle. Does any one have documentation on (and any tutorial that uses) Passiveparticle

2. I am trying to simulate Coal particle combustion and interested in adding multi-species to it. Hence need to modify the Lagrangian routine by addiing more variables to the particle properties, such as (Yi's on top of U, T, d). Yi's, which would be the mass fraction of species in coal also need to be stored as a particle property.

Can any shed some light on above two points as to how to proceed in Openfoam. Any information will be greatly helpful.