Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/242944
Type: Artigo de periódico
Title: Length Scale Of Density Waves In The Gravitational Flow Of Fine Grains In Pipes
Author: Franklin
Erick de Moraes; Zambrano
Carlos Alvarez
Abstract: Gravitational flow of grains in pipes is frequently encountered in industry. When the grains and pipes are size-constrained, granular flow may result in density waves consisting of alternate high- and low-compactness regions. This paper discusses the length scale of density waves that appear when fine grains fall vertically in pipes. A one-dimensional model and a linear stability analysis of the model are presented. The analysis suggests the presence of long-wavelength instability for the most unstable mode, moreover, a cutoff wavenumber from which the length scale is estimated. Finally, the model results are compared to experimental data.
Subject: Vertical Pipe
Granular Material
Instabilities
Country: HEIDELBERG
Editor: SPRINGER HEIDELBERG
Rights: fechado
Identifier DOI: 10.1007/s40430-014-0291-3
Address: http://link.springer.com/article/10.1007%2Fs40430-014-0291-3
Date Issue: 2015
Appears in Collections:Unicamp - Artigos e Outros Documentos

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