RT Journal Article
T1 Competition of Brazil nut effect, buoyancy, and inelasticity induced segregation in a granular mixture
A1 Brito, Ricardo
A1 Soto, R.
AB It has been recently reported that a granular mixture in which grains differ in their restitution coefficients presents segregation: the more inelastic particles sink to the bottom. When other segregation mechanisms as buoyancy and the Brazil nut effect are present, the inelasticity induced segregation can compete with them. First, a detailed analysis, based on numerical simulations of two dimensional systems, of the competition between buoyancy and the inelasticity induced segregation is presented, finding that there is a transition line in the parameter space that determines which mechanism is dominant. In the case of neutrally buoyant particles having different sizes the inelasticity induced segregation can compete with the Brazil nut effect (BNE). Reverse Brazil nut effect (RBNE) could be obtained at large inelasticities of the intruder. At intermediate values, BNE and RBNE coexist and large inelastic particles are found both near the bottom and at the top of the system.
SN 1539-3755
YR 2009
FD 2009-12
LK https://hdl.handle.net/20.500.14352/43806
UL https://hdl.handle.net/20.500.14352/43806
LA spa
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NO © EDP Sciences. We want to thank J.M.R. Parrondo for very useful comments. R.B. is supported by the Spanish Projects MOSAICO, UCM/PR34/07-15859 and the Program Profesores UCM en el Extranjero. The research is supported by Fondecyt grants 1061112, 1070958, and 7070301 and Fondap grant 11980002.
NO Spanish Projects MOSAICO
NO Program Profesores UCM en el Extranjero
NO Fondecyt
NO Fondap
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