Hi @rakesh_san0907!
I have given an answer to that in the past which can be found here: Simscale's fire analysing capabilities - #2 by jousefm - we will keep you up-to-date if there are any changes. If you are more interested in this topic feel free to check out FireFOAM: Google Code Archive - Long-term storage for Google Code Project Hosting..
All the best!
Jousef