'Garage HVAC' simulation project by dheiny


I created a new simulation project called 'Garage HVAC':

Smoke evacuation simulation of a garage

More of my public projects can be found here.



Is this a continuous flow?

Are you incorporating thermal effects or just checking velocity?

It is an interesting model but suprisingly large.


Hi @EngineerJohn,

thanks for your interest! So it’s work in progress - the results shown is a steady-state, iso-thermal, incompressible, turbulent flow analysis. So buoyancy / thermal effects are neglected for the time being. I’m planning on modeling a transient smoke extraction using a passive scalar approach, but I’m not there yet.

Are you involved in HVAC design?




Actually I teach HVAC but I’m interested in going beyond rule of “thumb” to more scientific approaches.
Many vendors provide actual test data for their diffusers but this is based on good room air mixing. This is a high energy approach with lot’s of tirbulence.

Emerging methods use displacement techiques and a lower velocity that can be largely laminar.

Since you were evacuating smoke of course you wanted a good strong velocity to clear the smoke quickly. You get a lot of mixing with these velocities.

I’m looking forward to your final design.