For my pick of best flow visualization I’d like to highlight the work of an artist who goes by ngr.ev on instagram. This artist makes heavy use of particle tracking velocimetry (PTV) in their work. In many of their pieces they track an enormous number of particles while often stretching the idea of what a “particle” might mean. I find the visual blend of natural phenomena and digital analysis particularly interesting, and I love how the artist’s tracking seems to make sense of even the most chaotic of scenes.