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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September 2014
Research Article|
September 02 2014
The patterning behaviour and accumulation of spherical particles in a vibrated non-isothermal liquid
Marcello Lappa
Marcello Lappa
a)
Telespazio
, Via Gianturco 31, Napoli 80046, Italy
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Physics of Fluids 26, 093301 (2014)
Article history
Received:
March 05 2014
Accepted:
July 28 2014
Citation
Marcello Lappa; The patterning behaviour and accumulation of spherical particles in a vibrated non-isothermal liquid. Physics of Fluids 1 September 2014; 26 (9): 093301. https://doi.org/10.1063/1.4893078
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