Levich Institute Seminar Announcement, 04/19/2016
Steinman Hall, Room #312
(Chemical Engineering Conference Room)
Dr. Blaise Delmotte
New York University
Courant Institute for Mathematical Sciences
"Fingering and Clustering Instability in Suspensions of Rollers: Computational Study and Potential Applications"
Suspensions of rolling particles can exhibit unexpected behaviors. Our recent experiments show that suspensions of rollers spinning in a direction parallel to a wall can form shock-like fronts. These fronts are subject to a transverse instability which leads to fingering patterns similar in appearance to traditional mixing instabilities but of different physical origin. In this talk I will show how computer simulations provide insight into this phenomenon. First, I will describe our numerical tool which simulates thousands of hydrodynamically interacting particles of arbitrary shape near a wall. Then, we use its capability to perform large scale simulations close to the lab scale and isolate the physical mechanisms responsible for the clustering of the rotors. Lastly, if time allows, we let our imagination drift, explore the parameter space and present some potential applications that could be tested experimentally.
BRIEF ACADEMIC/EMPLOYMENT HISTORY
RECENT RESEARCH INTERESTS
Theoretical and numerical modeling of suspensions of active and passive particles at different scales.