A lattice Boltzmann model for Jeffreys viscoelastic fluid

被引：73

作者：

Giraud, L

D'Humieres, D

Lallemand, P

机构：

[1] CNRS, Lab ASCI, F-91405 Orsay, France

[2] Univ Paris 06, Ecole Normale Super, Phys Stat Lab, F-75321 Paris 05, France

[3] Univ Paris 07, F-75321 Paris 05, France

来源：

EUROPHYSICS LETTERS | 1998年 / 42卷 / 06期

关键词：

D O I：

10.1209/epl/i1998-00296-0

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this letter, we show that an eleven-velocity two-dimensional lattice Boltzmann model using several relaxation times obeys a Jeffreys viscoelastic constitutive law with full isotropic behavior. The connection between the free parameters of the model and the Jeffreys transport coefficients is made with the help of a modified Chapman Enskog expansion taking into account large relaxation time effects. Numerical simulation of a pulsed Couette flow is performed leading to an excellent agreement with predictions.

引用

页码：625 / 630

页数：6

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