Lattice Boltzmann simulation of flow and heat transfer in random porous media constructed by simulated annealing algorithm

Minghua Liu, Yong Shi, Jiashu Yan, Yuying Yan

Research output: Journal PublicationArticlepeer-review

19 Citations (Scopus)

Abstract

In this article, the lattice Boltzmann (LB) method for transport phenomena is combined with the simulated annealing (SA) algorithm for digitized porous-medium construction to study flow and heat transfer in random porous media. Importantly, in contrast to previous studies which simplify porous media as arrays of regularly shaped objects or effective pore networks, the LB + SA method in this article can model statistically meaningful random porous structures in irregular morphology, and simulate pore-scale transport processes inside them. Pore-scale isothermal flow and heat conduction in a set of constructed random porous media characterized by statistical descriptors were then simulated through use of the LB + SA method. The corresponding averages over the computational volumes and the related effective transport properties were also computed based on these pore scale numerical results. Good agreement between the numerical results and theoretical predictions or experimental data on the representative elementary volume scale was found. The numerical simulations in this article demonstrate combination of the LB method with the SA algorithm is a viable and powerful numerical strategy for simulating transport phenomena in random porous media in complex geometries.

Original languageEnglish
Pages (from-to)1348-1356
Number of pages9
JournalApplied Thermal Engineering
Volume115
DOIs
Publication statusPublished - 2017

Keywords

  • Effective transport properties
  • Flow and heat transfer in random porous media
  • Lattice Boltzmann method
  • Simulated annealing algorithm

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering

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