A multicomponent lattice Boltzmann model recently introduced [R. Benzi et al., Phys. Rev. Lett. 102, 026002 (2009)] to describe some dynamical behaviors of soft-flowing materials is theoretically analyzed. Equilibrium and transport properties are derived within the framework of a continuum free-energy formulation and checked against numerical simulations. Due to the competition between short-range interspecies repulsion and midrange intraspecies attraction, the model is shown to give rise to a very rich configurational dynamics of the density field, exhibiting numerous features of soft-flowing materials such as long-time relaxation due to caging effects, enhanced viscosity and structural arrest, aging under moderate shear, and shear-thinning flow above a critical shear threshold. (C) 2009 American Institute of Physics. [doi: 10.1063/1.3216105]

Benzi, R., Sbragaglia, M., Succi, S., Bernaschi, M., Chibbaro, S. (2009). Mesoscopic lattice Boltzmann modeling of soft-glassy systems: Theory and simulations. THE JOURNAL OF CHEMICAL PHYSICS, 131(10) [10.1063/1.3216105].

Mesoscopic lattice Boltzmann modeling of soft-glassy systems: Theory and simulations

BENZI, ROBERTO;SBRAGAGLIA, MAURO;
2009-01-01

Abstract

A multicomponent lattice Boltzmann model recently introduced [R. Benzi et al., Phys. Rev. Lett. 102, 026002 (2009)] to describe some dynamical behaviors of soft-flowing materials is theoretically analyzed. Equilibrium and transport properties are derived within the framework of a continuum free-energy formulation and checked against numerical simulations. Due to the competition between short-range interspecies repulsion and midrange intraspecies attraction, the model is shown to give rise to a very rich configurational dynamics of the density field, exhibiting numerous features of soft-flowing materials such as long-time relaxation due to caging effects, enhanced viscosity and structural arrest, aging under moderate shear, and shear-thinning flow above a critical shear threshold. (C) 2009 American Institute of Physics. [doi: 10.1063/1.3216105]
2009
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore FIS/02 - FISICA TEORICA, MODELLI E METODI MATEMATICI
English
Con Impact Factor ISI
Density fields; Dynamical behaviors; Energy formulations; Flowing materials; Glassy systems; Lattice boltzmann; Lattice Boltzmann models; Long-time relaxations; Mesoscopics; Multicomponents; Numerical simulation; Shear thinning flow; Drop formation; Newtonian flow; Transport properties; Simulators
Benzi, R., Sbragaglia, M., Succi, S., Bernaschi, M., Chibbaro, S. (2009). Mesoscopic lattice Boltzmann modeling of soft-glassy systems: Theory and simulations. THE JOURNAL OF CHEMICAL PHYSICS, 131(10) [10.1063/1.3216105].
Benzi, R; Sbragaglia, M; Succi, S; Bernaschi, M; Chibbaro, S
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/30849
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