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

被引：87

作者：

Benzi, R. ^{[1
,2
]}

Sbragaglia, M. ^{[1
,2
]}

Succi, S. ^{[3
]}

Bernaschi, M. ^{[3
]}

Chibbaro, S. ^{[4
]}

机构：

[1] Univ Roma Tor Vergata, Dept Phys, I-00133 Rome, Italy

[2] Univ Roma Tor Vergata, Ist Nazl Fis Nucl, I-00133 Rome, Italy

[3] CNR, Ist Applicaz Calcolo, I-00161 Rome, Italy

[4] Univ Roma 3, Dept Phys, I-00146 Rome, Italy

来源：

JOURNAL OF CHEMICAL PHYSICS | 2009年 / 131卷 / 10期

关键词：

GAS MIXTURES; KINETIC-THEORY; DYNAMICS; EQUATION; RHEOLOGY; FLOW; PARTICLES; BINARY; LIQUID; HYDRODYNAMICS;

D O I：

10.1063/1.3216105

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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]

引用

页数：16

共 86 条

[1]

Allen M.P., 1989, COMPUTER SIMULATIONS

[2] Yielding and flow in adhesive and nonadhesive concentrated emulsions [J].

Bécu, L ;

Manneville, S ;

Colin, A .

PHYSICAL REVIEW LETTERS, 2006, 96 (13)

[3] THE LATTICE BOLTZMANN-EQUATION - THEORY AND APPLICATIONS [J].

BENZI, R ;

SUCCI, S ;

VERGASSOLA, M .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1992, 222 (03) :145-197

[4] Mesoscopic Lattice Boltzmann Modeling of Flowing Soft Systems [J].

Benzi, Roberto ;

Chibbaro, Sergio ;

Succi, Sauro .

PHYSICAL REVIEW LETTERS, 2009, 102 (02)

[5]

BERNASCHI M, 2009, UNPUB

[6] Shearing a glassy material: Numerical tests of nonequilibrium mode-coupling approaches and experimental proposals [J].

Berthier, L ;

Barrat, JL .

PHYSICAL REVIEW LETTERS, 2002, 89 (09) :957021-957024

[7] A MODEL FOR COLLISION PROCESSES IN GASES .1. SMALL AMPLITUDE PROCESSES IN CHARGED AND NEUTRAL ONE-COMPONENT SYSTEMS [J].

BHATNAGAR, PL ;

GROSS, EP ;

KROOK, M .

PHYSICAL REVIEW, 1954, 94 (03) :511-525

[8]

Binder K., 1992, Monte Carlo simulation in statistical physics

[9] Thermodynamic signature of growing amorphous order in glass-forming liquids [J].

Biroli, G. ;

Bouchaud, J. -P. ;

Cavagna, A. ;

Grigera, T. S. ;

Verrocchio, P. .

NATURE PHYSICS, 2008, 4 (10) :771-775

[10]

BIROLI G, ARXIV08054427V1

← 1 2 3 4 5 6 7 8 9 →