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A Mean-Field Free-Energy Approach to Lattice Boltzmann Method for Liquid-Vapor and Solid-Fluid Interfaces in Micro and Nanofluidics

[+] Author Affiliations
Junfeng Zhang, Baoming Li, Daniel Y. Kwok

University of Alberta, Edmonton, AB, Canada

Paper No. ICMM2004-2436, pp. 955-959; 5 pages
doi:10.1115/ICMM2004-2436
From:
  • ASME 2004 2nd International Conference on Microchannels and Minichannels
  • ASME 2nd International Conference on Microchannels and Minichannels
  • Rochester, New York, USA, June 17–19, 2004
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-4164-2
  • Copyright © 2004 by ASME

abstract

We presented a lattice Boltzmann method (LBM) using a mean-field representation of the free energy for fluid systems. This free-energy approach provides more realistic contact angles and fluid density profiles near the vicinity of an impenetrable wall, which cannot be easily obtained by other LBM schemes. Our method was tested against various criteria and the results are in good agreement with those from thermodynamics and molecular dynamics considerations. This mean-field approach to LBM can have important implication on studies where the solid-fluid interactions are crucial to fluidic behaviors.

Copyright © 2004 by ASME

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