Prediction of 3-D nano-mesh flows by a micro-flow LBM and its evaluation against MD simulations. (29th June 2011)

• Record Type: Journal Article
• Authors: Suga, K.; Takenaka, S.; Kinjo, T.; Hyodo, S.
• Is Part Of: Progress in computational fluid dynamics. Volume 11:Number 3/4(2011)
• Page Start: 139
• Page End: 148
• Publication Date: 2011-06-29
• Subjects: LBM -- lattice Boltzmann method -- molecular dynamics -- simulation -- microscale flow -- nanomesh flows -- nanoporous media -- diffuse scattering wall boundary -- relaxation time -- regularisation; Fluid dynamics -- Data processing -- Periodicals; Fluid dynamics -- Mathematics -- Periodicals; 620.10640285
• Languages: English
• ISSNs: 1468-4349

Abstract

In this paper, a Lattice Boltzmann Method (LBM) is evaluated for three-dimensional (3-D) continuum to non-continuum transitional flow regimes, and its performance for flows in a nano-porous medium is discussed. The equations used in the LBM are modified Lattice Boltzmann Equations (LBEs) introducing the diffuse-scattering wall boundary condition and a Knudsen number dependent relaxation-time along with the regularisation procedure. The evaluation is carried out by comparing the results with those of the Molecular Dynamics (MD) simulation. The results of the flows at Knudsen numbers Kn = 0.1 and 0.2 show good agreement in both simulations and confirm the reliability of the LBM.