GURUGURU - SWIRL FUNNEL
Video Link:
DESIGN DESCRIPTION:
GURUGURU - named after Tobi from Naruto; has been designed to provide angular momentum which accentuates the Coriolis force (an apparent force that as a result of the earth's rotation deflects moving objects Counter - Clockwise in the Northern Hemisphere and Clockwise in the Southern Hemisphere). The funnel has a unique mesh midway which further accentuates the swirling motion of the liquid exiting the funnel.
Supplies
3D Printer
Filament : PLA/PETG/ABS/ASA etc.
Slicing Software such as Cura, PrusaSlicer,Simplify3D etc.
Download the STL File Based on Your Hemisphere
There are separate files for each hemisphere. Below is a map of the globe showing bifurcation based on hemispheres.
(NOTE FOR COUNTRIES ON THE EQUATOR = According to the principle of Coriolis force, for countries on the equator there should not be any spin when the liquid is draining away. Therefore depending on which of the files you print there maybe a slight spin due to the design of the funnel which forces the liquid to spin, but I am curious to know what the actual findings will be.)
Print Settings
Resolution - 0.2mm
Material - PLA/PETG/ASA/ABS etc. ( Depending on your end usage conditions)
Perimeters - 2
Infill - 15-100% (Depending on your end application, although the printing time difference between the both is 30 minutes).
Supports - Depending on your slicer you can take the necessary steps to select the face shown in the photo to apply supports ONLY on that face.
​AFTER-PRINT CARE
Support Removal - The supports are very easy to remove from the model, use a forceps or a needle nose plier to pull the support-print interface layer. Ensure absence of stringing and blobs which may slow down/obstruct liquid flow for optimum performance.
DONE!
Tips and FAQs: ( Will keep updating based on suggestions and queries)
1) The best way to observe the swirling effect is to pour the liquid on the walls of the funnel rather than on the center, as the funnel is designed to induce angular momentum.
2) Directly using taps as liquid source may not give you the swirling effect as Coriolis Force is weak force compared to other meteorological phenomena and therefore other factors may overpower and contribute to the flow of liquids such as:
* Most taps come with a mesh that filters small stones, salt and other impurities, over time these impurities can get stuck to the mesh and obstruct the regular flow of water or induce a spin opposite to desired one.
* Salt buildup on the tap wall lining could also obstruct the regular flow of water or induce a spin opposite to desired one.
Therefore always pour from a container!