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http://hdl.handle.net/11154/2926
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Title: | Density fluctuations during the discharge of granular material from a two-dimensional bin |
Authors: | Medina, A Andrade, J Luna, E Treviño, C |
Issue Date: | 1996 |
Abstract: | We have found experimentally the existence of strong density fluctuations (density waves) during the discharge of monodisperse granular material from vertical flat bins. These density waves follow, approximately, a 1/f(alpha) fractal noise, where alpha = 1.32, just above the exit of the bin and, a 1/f noise, just below the exit. The corresponding rescaled range analysis (Mandelbrot-Van Ness fractional Brownian motion) for the fractal noise gives a Hurst parameter H = 0.16 and a fractal dimension D = 1.84. |
URI: | http://hdl.handle.net/11154/2926 |
ISSN: | 0035-001X |
Appears in Collections: | Física
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