Modeling people in fluent

Rich

I am modeling a ballroom with lots of people. The goal is to analysis airflow and temp distribution in the occupiable part of the space (bottom 9ft). Right now i have the people set up as a volume of fluid with an energy source. What is the best way to model the air resistance of the people?

I tried using porous zone but am unable to accurately calculate the vicious resistance or the inertial resistance for a volume of people. Would defining the walls of the "human volume" as porous_jumps be better?

Just looking to see what best practices methods are. Thanks.