Lattice Boltzmann approach for complex nonequilibrium flows

被引：91
|
作者：
Montessori, A. [1 ]
Prestininzi, P. [1 ]
La Rocca, M. [1 ]
Succi, S. [2 ]
机构：
[1] Univ Rome, Dept Engn, I-00146 Rome, Italy
[2] CNR, Ist Applicaz Calcolo, I-00185 Rome, Italy
来源：
PHYSICAL REVIEW E | 2015年 / 92卷 / 04期
关键词：
FINITE KNUDSEN NUMBERS; NANOFLUIDICS; MICROFLOWS; EQUATION; MODELS;
D O I：
10.1103/PhysRevE.92.043308
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
We present a lattice Boltzmann realization of Grad's extended hydrodynamic approach to nonequilibrium flows. This is achieved by using higher-order isotropic lattices coupled with a higher-order regularization procedure. The method is assessed for flow across parallel plates and three-dimensional flows in porous media, showing excellent agreement of the mass flow with analytical and numerical solutions of the Boltzmann equation across the full range of Knudsen numbers, from the hydrodynamic regime to ballistic motion.
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页数：6
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