The patterning behaviour and accumulation of spherical particles in a vibrated non-isothermal liquid

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A completely new phenomenon of particle accumulation in vibrated non-isothermal monodisperse suspensions of solid spheres (in a liquid) is analyzed. For the first time evidence is provided for this case that even in situations in which particle-particle hydrodynamic interactions are negligible (dilute systems), intriguing nonlinear effects can lead to the irreversible formation of well-defined particulate structures over "long" temporal scales, i.e., times much larger than the period of the applied vibrations. The long-range translational ordering is produced by the delicate interplay between convective effects (of thermovibrational nature) and the (inertial) response of each isolated particle to the time-periodic acceleration. A new family of particle attractors in the physical space is identified with the topological dimension being essentially a function of the "symmetry properties" of the considered vibrated system and related geometrical constraints.


LanguageEnglish
Article number093301
Number of pages22
JournalPhysics of Fluids
Volume26
Issue number9
DOIs
Publication statusPublished - 2 Sep 2014

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Nonlinear systems
Suspensions
Hydrodynamics
Liquids
liquids
nonlinear systems
particulates
hydrodynamics
vibration
symmetry
interactions

Keywords

  • two-phase flow
  • dispersive flows
  • buoyant vibro-convective transport
  • particle clustering phenomena

Cite this

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abstract = "A completely new phenomenon of particle accumulation in vibrated non-isothermal monodisperse suspensions of solid spheres (in a liquid) is analyzed. For the first time evidence is provided for this case that even in situations in which particle-particle hydrodynamic interactions are negligible (dilute systems), intriguing nonlinear effects can lead to the irreversible formation of well-defined particulate structures over {"}long{"} temporal scales, i.e., times much larger than the period of the applied vibrations. The long-range translational ordering is produced by the delicate interplay between convective effects (of thermovibrational nature) and the (inertial) response of each isolated particle to the time-periodic acceleration. A new family of particle attractors in the physical space is identified with the topological dimension being essentially a function of the {"}symmetry properties{"} of the considered vibrated system and related geometrical constraints.",
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The patterning behaviour and accumulation of spherical particles in a vibrated non-isothermal liquid. / Lappa, Marcello.

In: Physics of Fluids, Vol. 26, No. 9, 093301, 02.09.2014.

Research output: Contribution to journalArticle

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