Coarsening of granular segregation patterns in quasi-two-dimensional tumblers
نویسندگان
چکیده
STEVEN W. MEIER1, DIEGO A. MELANI BARREIRO2, JULIO M. OTTINO1,3,4 AND RICHARD M. LUEPTOW3* Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Rd, Evanston, Illinois 60208, USA Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, Massachusetts 02139, USA Department of Mechanical Engineering, Northwestern University, 2145 Sheridan Rd, Evanston, Illinois 60208, USA Northwestern Institute on Complex Systems (NICO), Northwestern University, Chambers Hall, 600 Foster St, Evanston, Illinois 60208, USA *e-mail: [email protected]
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Capturing patterns and symmetries in chaotic granular flow.
Segregation patterns formed by time-periodic flow of polydisperse granular material (varying in particle size) in quasi-two-dimensional (quasi-2D) tumblers capture the symmetries of Poincaré sections, stroboscopic maps of the underlying flow, derived from a continuum model which contains no information about particle properties. We study this phenomenon experimentally by varying the concentrati...
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