Segregation Effects in Rectangular Piles Built Up by a Moving Injection Device

FEDERICO KLEIN, JESICA BENITO, IRENE IPPOLITO AND ANA MARÍA VIDALES

Powder and Grains 2009:Proceedings of the 6th Internacional Conference on Micromechanics of Granular Media

AIP Conference Proceedings

Año: 2009; p. 691 - 694

<!-- /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; mso-bidi-font-size:10.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman"; mso-ansi-language:EN-US; mso-fareast-language:EN-US;} @page Section1 {size:612.0pt 792.0pt; margin:70.85pt 3.0cm 70.85pt 3.0cm; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> An experimental study of granular segregation is reported on rectangular grain piles built by dropping simultaneously grains of two different species from a funnel moving back and forth sinusoidally parallel to the length of the pile. Our experimental set-up allows us to control the following variables during the build-up of the pile: height of the injection point above the top, amplitude and velocity of its displacement and injection flow rate for each kind of grains. Glass beads of different diameters are used in the experiment. Preliminary experimental results demonstrate that the distance of the injection point from the top of the pile and the amplitude of the motion have the largest influence on the segregation.