This desk fan shroud design is based on the Noctua prototype presented on Computex 2019.
Smooth organic shape of the shroud helps to amplify and direct the airflow of the fan and makes it perfect for cooling in the weather that we are all facing right now.
By using Polymaker`s PolySmooth filament the effect should be much better due to smoother surface and also it would look much cooler :D
It amplifies airflow thanks to three effects:
1. The Venturi effect to pull in air from the surrounding area to increase the air flow.
2. Helix energy recovery
3. Progressive flow acceleration
My model is design to push fit 80x80x25mm Sunon fan.
More about how the shroud works in Noctua article:
Its easy and functional 3D print that takes few hours to print