This is an area of much interest for many decades.

I remember after the Hillsborough disaster and the Kings Cross fire, that there were attempts to use CFD with local microphysics. This is ~ 25 years ago now, so the topic is not a new one.

Page 125 of this:

https://www.academia.edu/4561532/Understanding_crowd_behaviours_Volume_2_Supporting_theory_and_evidence

may give you some references (I count half a dozen references). Full listing in the end pages.

You can also look at the application of fluid dynamics to traffic:

http://ercim-news.ercim.eu/en68/special/fluid-dynamic-approach-to-traffic-flow-problems

The following information may be useful for your research

'crowd simulation'  is explained using CFD tool in the following ref (33-3)

Ref;Computing Handbook, Third Edition: Computer Science and Software Engineering

edited by Teofilo Gonzalez, Jorge Diaz-Herrera, Allen Tucker

Thank  you a lot