Detalle Publicación

Sinking of light intruders in a shaken granular bed

Autores: Sánchez, I; Gutiérrez, G; Zuriguel Ballaz, Iker; Maza Ozcoidi, Diego
Título de la revista: PHYSICAL REVIEW E
ISSN: 1539-3755
Volumen: 81
Número: 6
Páginas: 062301
Fecha de publicación: 2010
We present an experimental study of the displacement of a light intruder immersed in a vibrated granular bed. Using high speed video we resolve the motion, during one cycle of oscillation, of a cylindrical object inside a Plexiglas box partially filled with grains. We report experimental evidence that, in the absence of convection, at least two forces are behind the intruder's motion: an air drag force-due to the airflow through the granular bed-and a buoyancy force produced by an air-mediated granular fluid.