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Title: Granular fingers on jammed systems : new fluidlike patterns arising in grain-grain invasion experiments.
Authors: Pinto, S. F.
Couto, M. S.
Atman, A. P. F.
Alves, S. G.
Bernardes, Américo Tristão
Resende, Hélio Fernando Verona de
Souza, E. C.
Issue Date: 2007
Citation: PINTO, S. F. et al. Granular fingers on jammed systems: new fluidlike patterns arising in grain-grain invasion experiments. Physical Review Letters, v. 99, p. e068001, ago. 2007. Disponível em: <>. Acesso em: 12 fev. 2015.
Abstract: In this Letter we report spontaneous pattern formation in dense granular assemblies confined to a Hele-Shaw cell and quasistatic regime. Varied unexpected patterns, ranging from rounded to fingered, are observed due to the displacement of one granular material by another. Computer simulations reproduce the major features observed in these experiments. Two mechanisms are responsible for the pattern formation: crystallization of the injected grains and plastic deformation of the displaced grains. The experiment suggests analogies with viscous fingering and jamming transition experiments.
ISSN: 0031-9007
metadata.dc.rights.license: O periódico Physical Review Letters permite o arquivamento da versão PDF do editor em repositórios institucionais. Fonte: Sherpa/Romeo <>. Acesso em: 03 jan. 2017.
Appears in Collections:DEFIS - Artigos publicados em periódicos

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