Listar por autor "Carlevaro, Manuel"
Mostrando ítems 1-12 de 12
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Effect of grain shape on the jamming of two dimensional silos
Goldberg, Ezequiel; Carlevaro, Manuel; Pugnaloni, Luis (EPJ Web of Conferences, 2017)We present discrete element method simulations of the discharge of silos in two dimensions. We study the effect of the grain shape on the clogging of small apertures, considering regular polygons and disks of equal mass. ... -
Effect of particle shape and fragmentation on the response of particle dampers
Sánchez, Martín; Carlevaro, Manuel; Pugnaloni, Luis (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, ... -
Exact predictions from Edwards ensemble vs realistic simulations of tapped narrow two dimensional granular columns
Irastorza, Ramiro; Carlevaro, Manuel; Pugnaloni, Luis (Journal of Statistical Mechanics: Theory and Experiment, 2013)We simulate, via a discrete element method, the tapping of a narrow column of disks under gravity. For frictionless disks, this system has a simple analytical expression for the density of states in the Edwards volume ... -
Flow rate of polygonal grains through a bottleneck Interplay between shape and size
Goldberg, Ezequiel; Carlevaro, Manuel; Pugnaloni, Luis (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. ... -
Intruder in a two-dimensional granular system: effects of dynamic and static basal friction on stick-slip and clogging dynamics
Carlevaro, Manuel; Kozlowski, Ryan; Pugnaloni, Luis; Zheng, Hu; Socolar, Joshua E. S.; Kondic, Lou (2019-10-15)We discuss the results of simulations of an intruder pulled through a two-dimensional granular system by a spring, using a model designed to lend insight into the experimental findings described by Kozlowski et al. [Phys. ... -
On the use of magnetic particles to enhance the flow of vibrated grains through narrow apertures
Carlevaro, Manuel; Kuperman, Marcelo N.; Bouzat, Sebastián; Pugnaloni, Luis; Madrid, Marcos A. (2021-06-28)The ow of grains through narrow apertures posses an extraordinary challenge: clogging. Strategies to alleviate the effect of clogging, such as the use of external vibration, are always part of the design of machinery for ... -
Self-assembly of self-propelled magnetic grains
Madrid, Marcos A.; Irastorza, Ramiro; Meyra, Ariel G.; Carlevaro, Manuel (2021)In this work, we study bidisperse mixtures of self-propelled magnetic particles of di erent shapes via discrete element method simulations. We show how these particles self-assemble into clusters and how these clusters ... -
Stability and conductivity of proppant packs during flowback in unconventional reservoirs: a CFD–DEM simulation study
Vega, Federico G.; Carlevaro, Manuel; Sánchez, Martín; Pugnaloni, Luis; 0000-0003-3528-7614; 0000-0001-5766-6514 (Elsevier B.V., 2021)We present simulations using a coupled Computational Fluid Dynamics–Discrete Element Method (CFD–DEM) approach for a slurry of millimeter-sized particles in water which is squeezed between two walls and then made flow ... -
Structure of force networks in tapped particulate systems of disks and pentagons I Clusters and loops
Pugnaloni, Luis; Carlevaro, Manuel; Kramar, M; Mischaikow, K; Kondic, L (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
Kondic, L.; Kramar, M.; Pugnaloni, Luis; Carlevaro, Manuel; Mischaikow, K. (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, ... -
Two approaches to quantification of force networks in particulate systems
Basak, Rituparna; Carlevaro, Manuel; Kozlowski, Ryan; Cheng, Chao; Pugnaloni, Luis A.; Kramár, Miroslav; Zheng, Hu; Socolar, Joshua E. S.; Kondic, Lou (2021-02-24)The interactions between particles in particulate systems are organized in ‘force networks’, mesoscale features that bridge between the particle scale and the scale of the system as a whole. While such networks are known ... -
Universal features of the stick-slip dynamics of an intruder moving through a confined granular medium
Pugnaloni, Luis; Carlevaro, Manuel; Kozlowski, Ryan; Zheng, Hu; Kondic, Lou; Socolar, Joshua E. S.; 0000-0001-5766-6514; 0000-0003-3528-7614; 0000-0002-2602-038X; 0000-0002-9606-9947; 0000-0001-6966-9851; 0000-0003-0532-7099 (2022-04-21)Experiments and simulations of an intruder dragged by a spring through a two-dimensional annulus of granular material exhibit robust force fluctuations. At low packing fractions (φ < φ0), the intruder clears an open ...