Herschel-Bulkley rheology from lattice kinetic theory of soft glassy materials

被引：24

作者：

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

Bernaschi, M. ^{[3
]}

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

Succi, S. ^{[3
]}

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-00185 Rome, Italy

来源：

EPL | 2010年 / 91卷 / 01期

关键词：

MODE-COUPLING THEORY; BOLTZMANN MODEL; VISCOSITY; FLOW;

D O I：

10.1209/0295-5075/91/14003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We provide clear evidence that a two-species mesoscopic Lattice Boltzmann (LB) model with competing, short-range attractive and mid-range repulsive, interactions supports emergent Herschel-Bulkley (HB) rheology, i.e. a power-law dependence of the shear stress as a function of the strain rate, beyond a given yield stress threshold. This kinetic formulation supports a seamless transition from flowing to non-flowing behaviour, through a smooth tuning of the parameters governing the mesoscopic interactions between the two species. The present model may become a valuable computational tool for the investigation of the rheology of soft glassy materials on scales of experimental interest. Copyright (C) EPLA, 2010

引用

页数：6

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