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Nanoflows through disordered media: A joint lattice Boltzmann and molecular dynamics investigation

Russo, John and Horbach, Jürgen and Sciortino, Francesco and Succi, Sauro (2010) Nanoflows through disordered media: A joint lattice Boltzmann and molecular dynamics investigation. Europhysics Letters, 89 (4), p. 44001. DOI: 10.1209/0295-5075/89/44001. ISSN 0295-5075.

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Official URL: http://iopscience.iop.org/0295-5075/89/4/44001

Abstract

We investigate nanoflows through dilute disordered media by means of joint lattice Boltzmann (LB) and molecular dynamics (MD) simulations -when the size of the obstacles is comparable to the size of the flowing particles-for randomly located spheres and for a correlated particle-gel. In both cases at sufficiently low solid fraction, Phi < 0.01, LB and MD provide similar values of the permeability. However, for Phi > 0.01, MD shows that molecular-size effects lead to a decrease of the permeability, as compared to the Navier-Stokes predictions. For gels, the simulations highlights a surplus of permeability, which can be accommodated within a rescaling of the effective radius of the gel monomers.

Document Type:Article
Title:Nanoflows through disordered media: A joint lattice Boltzmann and molecular dynamics investigation
Authors:
AuthorsInstitution or Email of Authors
Russo, JohnUniv. Roma La Sapienza
Horbach, JürgenMP, DLR
Sciortino, FrancescoUniv. Roma La Sapienza
Succi, SauroCNR, Roma
Date:February 2010
Journal or Publication Title:Europhysics Letters
Refereed publication:Yes
In Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:89
DOI:10.1209/0295-5075/89/44001
Page Range:p. 44001
ISSN:0295-5075
Status:Published
Keywords:SMOOTHED PARTICLE HYDRODYNAMICS; FIBROUS POROUS-MEDIA; FLUID-FLOW; PERMEABILITY; SPHERES; SIMULATION
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W FR - Forschung unter Weltraumbedingungen (old)
DLR - Research area:Space
DLR - Program:W FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):W - Vorhaben Materialwissenschaftliche Forschung (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space
Deposited By: Dr.rer.nat. Jürgen Horbach
Deposited On:05 Nov 2010 10:42
Last Modified:07 Feb 2013 20:15

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