Mini Bladeless Fan

thingiverse

After looking at the fan designs from Helix3D, I wanted to try one but saw some issues with it. His design was large (140mm), printed in large parts with lots of supports, needed to be glued together and takes almost a whole role of filament. I found some good information here: https://www.researchgate.net/publication/288180188_Numerical_investigation_of_geometric_parameter_effects_on_the_aerodynamic_performance_of_a_Bladeless_fan with cross sections and charts that show what parameters have the most effect on performance. So I created a version that fits an 80mm fan, can be printed in separate pieced and snapped together and is not as big an investment to print. As Helix3D found, while the thing does work with a simple axial computer fan, those fans don't create enough pressure to properly drive the bladeless design. So in the end I can say it provides almost as much air as the computer fan does by itself. Maybe I'll take a crack at designing a turbine compressor too. (Update 1/26/18, see https://www.thingiverse.com/thing:2771339 for a turbine base) Enjoy.