I am working on Combustion Model, Please let me know which CFD software is better for that ?

Which combustion scenario is of interest?  (internal combustion engine, fire, explosion, etc)

  I have compiled Ansys Fluent-EDEM and run a tutorial that I got from Altair site. Here we have observed a distinct variation in results: specifically, while ANSYS Fluent shows an increase in temperature, EDEM does not exhibit a corresponding rise after the coupling process.

https://community.altair.com/community/en/altair-edem-coupling-for-ansys-fluent-with-combustion?sys_kb_id=d384c1c0db2ae910cfd5f6a4e29619a3&id=kb_article_view&sysparm_rank=3&sysparm_tsqueryId=5eff00ec9708b9d0e3b0361e6253aff1

I have to work on a combustion model and reduction in Rotary kiln. I have already done a coupled simulation(Bidirectional coupling of air-solid particles in a rotary kiln) with the use of Simlab and EDEM. Further, I have started to work on coal combustion in Simlab(CFD). Now, I am facing some problems putting reactions and chemical composition of iron ore and coal particles in Simlab(CFD) as it is necessary for calculating reaction rates and species concentration. I am not able to find out where I have to put all these. Please let me know which CFD software is better for combustion in Rotary kiln.

Which combustion scenario is of interest?  (internal combustion engine, fire, explosion, etc)

I have to work on a combustion model and reduction in Rotary kiln. I have already done a coupled simulation(Bidirectional coupling of air-solid particles in a rotary kiln) with the use of Simlab and EDEM. Further, I have started to work on coal combustion in Simlab(CFD). Now, I am facing some problems putting reactions and chemical composition of iron ore and coal particles in Simlab(CFD) as it is necessary for calculating reaction rates and species concentration. I am not able to find out where I have to put all these. Please let me know which CFD software is better for combustion in Rotary kiln.

I think there is no capability for chemical reactions / combustion you're seeking within Altair products.