Introduction
An interactive 3D model of various hopper types.
Additional Resources
https://ibullmfg.com/4-main-types-of-hoppers-and-their-uses
https://www.slideshare.net/physics101/storage-bins-and-hoppers
https://powderprocess.net/Silo_discharge.html
https://www.aiche.org/sites/default/files/cep/20131125_1.pdf