Physics Department Spring Seminar Series

04/18/10

Contributed by Jill Ackerman

Tuesday, April 20, 2010:  Packing, Clogging, and Avalanches in Granular Materials, with Scott Franklin, Rochester Institute of Technology

It’s remarkable how little we know about ubiquitous granular materials such as sand, snow, or dirt. For example, there is no explanation for how much space sand takes up in a bucket or why it takes up less room when tapped. And while hourglasses have been used to mark time for over 600 years, we are only beginning to understand the physics behind how the particles clog at the opening, a very important question to industry that needs to move large amounts of particulate matter (e.g. pills, cereal, or grain).   In this seminar, I'll discuss a number of ongoing projects in our granular physics lab on both round and rod-like granular materials. These include experimental and computational investigations into the uniquely solid plug formed by long, thin particles, and a new theory for the onset of anomalously large flows through hoppers with rectangular, rather than circular, openings.

All seminars will be held in CNS 204 at 12:10 (unless otherwise indicated).  Pizza and refreshments will be available for $1.  Remember to Reduce, Reuse, Recycle - Please bring your own cup.

Individuals with disabilities requiring accommodations should contact the Physics Department at jackerman@ithaca.edu. We ask that requests for accommodations be made as soon as possible.

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