Levich Institute Seminar Announcement, 04/21/2015
Steinman Hall, Room #312
(Chemical Engineering Conference Room)
Professor Emilie Dressaire
NYU Polytechnic School of Engineering Mechanical and Aerospace Engineering
"Tuning Fluid Behavior Using Micro-Structures"
Multiscale couplings contribute to the rich behavior of complex fluids. In this talk, I will focus on systems in which the presence of micrometer-scale structures has critical macroscopic effects. We will first describe the wetting of fibers to demonstrate the influence of mechanical parameters on the morphology of capillary bridges and the drying of fibrous media. We will then discuss the sloshing dynamics of a liquid bath covered with foam. The addition of bubbles leads to a damping of the waves, through viscous dissipation in the micrometer-scale Plateau borders. Finally, we will consider particle-laden flows in microchannels that constitute a model porous media allowing the fluid to pass through but trapping contaminants. Once a clog is formed in a pore, incoming particles aggregate upstream, which leads to a dramatic reduction of the flow rate. We use this microfluidic approach to study the clog formation and the growth of the aggregate.
BRIEF ACADEMIC/EMPLOYMENT HISTORY
RECENT RESEARCH INTERESTS
Particle-ladden flows in confined environments Interactions between a fluid and granular media