Cdcl
 

I wish to know how can we create different zones in a mesh. Like In my geometry I have few reactions, suppose I have reactor tower where at top particular reaction takes place.. complete reaction takes place for a particular species in top part and then in middle part there is other subsequent reaction of new species or the product formed in the top part of reactor and then at lower part other subsequent reaction(s) take place and other reaction of different injected species take place at that zone too. So I wish to know how I create such zones in Fluent to carry out such reactions.
Thank you for your reply.