Listar FRLP - I+D+i - GRUTN - GMG - TRABAJOS DE INVESTIGACIÓN por título
Mostrando ítems 3-17 de 17
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Clogging transition of many particle systems flowing through bottlenecks
(Scientific Reports, 2014)When a large set of discrete bodies passes through a bottleneck, the flow may become intermittent due to the development of clogs that obstruct the constriction. Clogging is observed, for instance, in colloidal suspensions, ... -
Clogging transition of vibration driven vehicles passing through constrictions
(American Physical Society, 2017)We report experimental results on the competitive passage of elongated self-propelled vehicles rushing through a constriction. For the chosen experimental conditions, we observe the emergence of intermittencies similar to ... -
Contact network topology in tapped granular media
(American Physical Society, 2013)We analyze the contact network of simulated two-dimensional granular packings in different states of mechanical equilibrium obtained by tapping. We show that topological descriptors of the contact network allow one to ... -
Dynamic transition in conveyor belt driven granular flow
(Elsevier, 2015)We consider the flow of disks of diameter d driven by a conveyor belt of dynamic friction coefficient μ through an aperture on a flat barrier. The flow rate presents two distinct regimes. At low belt velocities v the flow ... -
Effect of particle shape and fragmentation on the response of particle dampers
(SAGE Publications, 2014)A particle damper (PD) is a device that can attenuate mechanical vibrations thanks to the dissipative collisions between grains contained in a cavity attached to the vibrating structure. It has been recently suggested that, ... -
Ergodic nonergodic transition in tapped granular systems; The role of persistent contacts
(Papers in Physics, 2016)Static granular packs have been studied in the last three decades in the frame of a modi ed equilibrium statistical mechanics that assumes ergodicity as a basic postulate. The canonical example on which this framework is ... -
Experimental proof of faster is slower in systems of frictional particles flowing through constrictions
(American Physical Society, 2015)The “faster-is-slower” (FIS) effect was first predicted by computer simulations of the egress of pedestrians through a narrow exit [D. Helbing, I. J. Farkas, and T. Vicsek, Nature (London) 407, 487 (2000)]. FIS refers to ... -
First order phase transition during displacement of amphiphilic biomacromolecules from interfaces by surfactant molecules
(Journal of Physics: Condensed Matter, 2014)The adsorption of surfactants onto a hydrophobic interface, already laden with a fixed number of polymers, is studied using the self consistent field (SCF) calculation method of Scheutjens and Fleer. For polymers having ... -
Flow rate of polygonal grains through a bottleneck Interplay between shape and size
(Papers in Physics, 2015)We report two-dimensional simulations of circular and polygonal grains passing through an aperture at the bottom of a silo. The mass flow rate for regular polygons is lower than for disks\red{,} as observed by other authors. ... -
On and off dynamics of a creeping frictional system
(Springer, 2014)We report on the dynamics of a model frictional system submitted to minute external perturbations. The system consists of a chain of sliders connected through elastic springs that rest on an incline. By introducing cyclic ... -
Relevance of system size to the steady state properties of tapped granular systems
(American Physical Society, 2015)We investigate the steady-state packing fraction ϕ and force moment tensor Σ of quasi-two-dimensional granular columns subjected to tapping. Systems of different height h and width L are considered. We find that ϕ and Σ, ... -
Structure of force networks in tapped particulate systems of disks and pentagons I Clusters and loops
(American Physical Society, 2016)The force network of a granular assembly, defined by the contact network and the corresponding contact forces, carries valuable information about the state of the packing. Simple analysis of these networks based on the ... -
Structure of force networks in tapped particulate systems of disks and pentagons II Persistence analysis
(American Physical Society, 2016)In the companion paper [Pugnaloni et al., Phys. Rev. E 93, 062902 (2016)], we use classical measures based on force probability density functions (PDFs), as well as Betti numbers (quantifying the number of components, ... -
Tapped granular packings described as complex networks
(Taylor and Francis, 2013)We characterize the structure of simulated two-dimensional granular packings using con- cepts from complex networks theory. The packings are generated by a simulated tapping protocol, which allows us to obtain states in ... -
Wang Landau algorithm for entropic sampling of arch based microstates in the volume ensemble of static granular packings
(Papers in Physics, 2015)We implement the Wang-Landau algorithm to sample with equal probabilities the static configurations of a model granular system. The "non-interacting rigid arch model" used is based on the description of static configurations ...