CFD (computation fluid dynamics) is essentially a virtual wind tunnel test. In the past, a really powerful computer was needed to crunch the simulation in a timely manner. These days, we can use cloud based software such as Simscale. Best of all, it's completely free for enthusiasts.

In this video, I take you through an example tutorial where a part cooling fan duct is optimised for a 3D printer. I'm not an aeronautical engineer, but what is here should be enough to get you going. There is a lot of documentation, but much of it is out date, incomplete or hard to find. Hopefully this video can help overcome this.

Simscale: https://www.simscale.com
Airflow calculator: https://www.engineering.com/calculato...

Models and simulations shown in this video:
Little jet plane: https://www.thingiverse.com/thing:222309
Petsfang part cooling fan duct: https://www.thingiverse.com/thing:275...
Thermal analysis by Aravindbaskar: https://www.simscale.com/workbench/?p...
Super layer cooler CFD by Haabilo: https://www.simscale.com/workbench/?p...
Infill type strength comparision for 3D printed parts - Static FEA by jhorv_th: https://www.simscale.com/workbench/?p...
Part cooling fan duct optimized with nozzle by mgrimm: https://www.simscale.com/workbench/?p...

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