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Mostrando ítems 1-9 de 9
Artículo
The settling of fine cohesive powders
(IOP Publishing Ltd., 2001-05-01)
We investigate the settling of an initially fluidized bed of a fine cohesive powder. Experimental results on the sedimentation rate cannot be fitted by theoretical and empirical equations existing in the literature and ...
Artículo
Granular avalanches: Deterministic, correlated and decorrelated dynamics
(IOP Publishing Ltd., 2004-12-15)
A statistical analysis of granular avalanches in a half-filled and slowly rotated drum is presented. For large-sized grains the classical coherent oscillation is reproduced, i.e. we observe a quasi-periodic succession of ...
Artículo
Fluidization of nanopowders: a review
(Springer Verlag, 2012)
Nanoparticles (NPs) are applied in a wide range of processes, and their use continues to increase. Fluidization is one of the best techniques available to disperse and process NPs. NPs cannot be fluidized individually; ...
Ponencia
Mechanical Strength of Humidified Glass Beads
(AIP Publishing, 2009)
In this work we measure the mechanical strength of a bed of glass beads that has been previously subjected to a controlled flow of humid air by using a fluidized bed setup. The material is first initialized in a reproducible ...
Ponencia
Magnetofluidization of fine magnetite particles
(American Institute of Physics, 2009)
In this study we investigate the behaviour of a fluidized bed of fine magnetite particles as affected by a crossflow uniform magnetic field. Due to the small particle size (35 microns), the fluidized system displays a ...
Artículo
Magnetic field induced inversion in the effect of particle size on powder cohesiveness
(AIP Publishing, 2010-07)
Experimental measurements are reported on the tensile yield stress of magnetofluidized beds of fine magnetic powders operated in the cross-flow configuration. In the absence of externally applied magnetic field the yield ...
Ponencia
Alternating Field Electronanofluidization
(American Institute of Physics, 2009)
The use of fluidized beds to remove submicron particles from gases has been investigated since 1949. High efficiency removal was achieved in the 1970’s by imposing an electric field on a fluidized bed of semi-insulating ...
Artículo
Mesoscopic structuring and yield stress of magnetofluidized fine particles
(IOP Publishing Ltd., 2009-10)
The fluidization behavior of a bed of fine magnetizable particles excited by an externally applied magnetic field is found to depend on the aggregative nature of the particles before the field was applied. Usually nonaggregated ...
Ponencia
Extension of Geldart's Diagram to Fluidizable Fine and Ultrafine Particles
(American Institute of Physics, 2009)
The Geldart’s diagram, which was originally based on empirical observations on beds fluidized by air at ambient conditions, has been routinely used to predict the type of gas-fluidization expected for a granular material. ...