Unless otherwise noted, all seminars are held on Wednesdays in the College of Computing Building (Room 016) at 3 p.m. Refreshments are served at 2:30 p.m. outside Room 016.
Sangtae Kim, Purdue University
"Microhydrodynamics of Ellipsoidal Particles"
The ellipsoid (along with its degenerate forms) is the workhorse in classical models that capture the role of nonspherical particle shapes in multiphase suspensions and composite materials. The utility of these models in many branches of science have forced generations of students to master the mathematics of elliptic integrals and related functions.
And yet for over a half-century we have known that one of the most important entities in these models, namely the surface traction (force per area on the particle surface) has a relatively simple form: essentially the same formula as the sphere and no elliptic integrals. The explanation is rooted in the theory of integral operators as applied to single- and double-layer hydrodynamic potentials. These findings open the door to new velocity representations for ellipsoidal microhydrodynamics and potential applications for micro- and nano-particle technologies.
The presentation will conclude with a tribute to the memory of Howard Brenner.
Professor Sangtae Kim is Distinguished Professor and the Jay and Cynthia Ihlenfeld Head of Chemical Engineering at Purdue University. In a career spanning multiple sectors, Dr. Kim has held executive level leadership positions at Eli Lilly, Parke-Davis and the National Science Foundation and assistant to distinguished professor ranks in chemical engineering at UW-Madison. His research has helped to construct much of the modern foundations for a better understanding of the relationship between particle shape and hydrodynamic interactions in a microscale setting. He is the recipient of William O. Baker Award for Initiatives in Research from the National Academy of Sciences, the Allan P. Colburn Award from American Institute of Chemical Engineers and the Ho-Am Engineering Prize. Dr. Kim is a fellow of the American Institute for Medical and Biological Engineers and the American Institute of Chemical Engineers and a member of the National Academy of Engineering. "