r/oddlysatisfying 5h ago

CFD simulations of airflow through vents

22.5k Upvotes

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u/happycj 2h ago

I was super fortunate to work for NASA at Ames Research Center back in the 1990s, just when computational fluid dynamics software was emerging on our various supercomputers on site.

As a network engineer and desktop tech support, I got to work hand in hand with the scientists using these tools to visualize airflow over airframes, liquid and gas flows through pipes, and dozens of other applications.

As a homeowner nowadays, I see what the plumbers and HVAC guys are doing for bends and turns and think back to these visualizations I saw back then… it’s cool to be able to see in your head what these invisible flows are like!!

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u/Zu_Qarnine 2h ago

I love wind tunnels videos

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u/happycj 56m ago

Getting to be there in the control room and watch wind tunnel testing of the largest vehicles in the world was a treat I will never forget. We had entire semi tractor trailers - 18-wheelers - in the wind tunnel being tested for airflow and cavitation around new cab designs.

We also had a supersonic wind tunnel where models of future plane designs would be made out of aluminum or steel or ceramic, placed on a pedestal inside the tunnel to test their airflow. That was, of course, a much smaller diameter tunnel - maybe 8 feet across? - because of the speed of the wind, but was also fascinating to experience.

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u/Zu_Qarnine 53m ago

man you're being mean telling me these stuff lol