Effect of size distribution on mixing of a polydisperse wet granular material in a belt-driven enclosure

Mahapatra, Pallab Sinha; Mathew, Sam; Panchagnula, Mahesh V.; Vedantam, Srikanth

doi:10.1007/s10035-016-0633-1

Cited by 11 publications

(2 citation statements)

References 37 publications

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“…It consists of a combination of two existing techniques. Namely: a moving-bed channel [45,[50][51][52][53][54][55] and the noninvasive imaging technique Refractive Index Matched Scanning (RIMS) [56,57], that allows for the visualisation of the interior of a granular flow.…”

Section: The Moving-bed Channelmentioning

confidence: 99%

Breaking size-segregation waves and mobility feedback in dense granular avalanches

et al. 2018

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Through experiments and discrete particle method (DPM) simulations we present evidence for the existence of a recirculating structure, that exists near the front of dense granular avalanches, and is known as a breaking sizesegregation (BSS) wave. This is achieved through the study of three-dimensional bidisperse granular flows in a moving-bed channel. Particle-size segregation gives rise to the formation of a largeparticle-rich front and a small-particle-rich tail with a BSS wave positioned between the tail and front. We experimentally resolve the structure of the BSS wave using refractive-index matched K. van der Vaart Civil and Environmental Engineering,

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Section: The Moving-bed Channelmentioning

confidence: 99%

Breaking size-segregation waves and mobility feedback in dense granular avalanches

et al. 2018

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“…The inter agents interaction force are modelled as 59,60 ,where , is the separation between two agents i and j in terms of position vectors and and diameters d i and d j for all neighbouring agents j . Here, represents the direction of the line joining the agents.…”

Section: Methodsmentioning

confidence: 99%

Confined System Analysis of a Predator-Prey Minimalistic Model

Mohapatra

Mahapatra

2019

Sci Rep

Self Cite

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In nature exists a properly defined food chain- an order of hunting and getting hunted. One such hunter-hunted pair is considered in this context and coordinated escape manoeuvres in response to predation is studied in case of a rarely examined confined system. Both the predator agent and prey agents are considered to be self-propelled particles moving in a viscous fluid. The state of motility when alive and passivity on death has been accounted for. A novel individual-based combination of Vicsek model and Boids flocking model is used for defining the self-propelling action and inter-agent interactions. The regimes observed at differing levels of co-ordination segregated by quantification of global order parameter are found to be in agreement with the extant literature. This study strives to understand the penalty on the collective motion due to the restraints employed by the rigid walls of the confinement and the predator’s hunting tactics. The success of any escape manoeuvre is dependent on the rate of information transfer and the strength of the agitation at the source of the manoeuvre. The rate of information transfer is studied as a function of co-ordination and the size of the influence zone and the source strength is studied as a function of escape acceleration activated on the agitated prey. The role of these factors in affecting survival rate of prey is given due coverage.

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Order-stampede transitions in human crowds: The role of individualistic and cooperative forces

Syed¹,

Thampi²,

Panchagnula³

2022

Physica A: Statistical Mechanics and its Applications

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Effect of size distribution on mixing of a polydisperse wet granular material in a belt-driven enclosure

Abstract: We use a recently developed coupled fluid-particle discrete element model to study mixing of a wet granular material in a two dimensional setting. The particles are modeled as linearly elastic disks and are considered to be immersed

Cited by 11 publications

References 37 publications

Breaking size-segregation waves and mobility feedback in dense granular avalanches

Breaking size-segregation waves and mobility feedback in dense granular avalanches

Confined System Analysis of a Predator-Prey Minimalistic Model

Order-stampede transitions in human crowds: The role of individualistic and cooperative forces

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