Graduate Student / Postdoc Seminar

Sculpting with flow: Mudballs, meteorites, bubbles & lollipops

Speaker: Leif Ristroph, Courant Institute of Mathematical Sciences

Location: Warren Weaver Hall 1302

Date: Friday, November 30, 2018, 1 p.m.


In the NYU-Courant Applied Math Lab, we’ve recently been studying how solid but shapeable boundaries interact with flowing fluids. Although not the intended subject of our work, singular geometries have surprised us by popping up in several experiments. I will survey a few projects, starting with how an erodible body is robustly carved by flow into a peculiar shape with sharp points and corners. I can also point out an intriguing connection to meteor flight. Next, we’ll look into the events leading up to blowing a bubble by examining the flow-induced deformations of a liquid film. If time permits, I’ll also cover some preliminary work on dissolving boundaries and how the flows naturally present during dissolution carve singularly sharp candy ‘landscapes’.