FLUId-SoliD InteRACtion !!! any suggetion

SAM

I am undergraduate student and my final year project is due in 2 months. I need help

This project is related to some processing industry

My problem statement is:

In room there are pipes on groud for heating purpose. Hot gases are flowing inside these pipes and then convected to air in the room and then it should conducted through walls and then convected to ambient air.

I want to see the where the maximum heat lost is occuring.

I need to know how to model this in Fluent and or any CFD software

wat should be domain

Wat shuld be the boundary condtion at pipes , and walls

Thanks in advance