Levich Institute Seminar Announcement, 10/20/2015
Steinman Hall, Room #312
(Chemical Engineering Conference Room)
Professor Arshad Kudrolli
Department of Physics
"Granular Erosion and Transport by a Fluid Flow"
Erosion and deposition of grains by a fluid flowing past the surface of a granular bed occurs in many natural and industrial processes. Wind blowing over sand, sediment transport in rivers, tidal flows interacting with beaches, flows in slurry pipelines and mixing tanks with sediments, and mud cake formation in bore holes are some examples. While considerable number of empirical studies has been conducted, very little is in fact known in detail on conditions which lead to erosion and deposition of sediments and their transport coefficients. We discuss a series of laboratory experiments to develop the physics of erosion starting with a single particle resting on a surface in a fluid flow. Fluorescent fluid-particle index matching techniques allow us to visualize not only the particles at the surface of a granular bed but also the flow within the bed and the individual particles within the bed. We will discuss the conditions governing the onset of particle motion and their transport as a function of bed and fluid flow properties using simple shear geometries.
BRIEF ACADEMIC/EMPLOYMENT HISTORY
Professor Kudrolli received a B. Tech. in Engineering Physics from the Indian Institute of Technology in Bombay in 1990 and a Ph.D. in Physics (Electromagnetic and Microwave Chaos) from Northeastern University in 1995, and is currently Professor of Physics at Clark University
RECENT RESEARCH INTERESTS
Research interests span soft matter, fluid dynamics, and nonlinear physics. A major focus of his group's current research is on the interaction of granular matter and liquids leading to transport.