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

Liu, Minghua and Shi, Yong and Yan, Jiashu and Yan, Yuying (2017) Lattice Boltzmann simulation of flow and heat transfer in random porous media constructed by simulated annealing algorithm. Applied Thermal Engineering, 115 . pp. 1348-1356. ISSN 1873-5606

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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.

Item Type: Article
Keywords: Lattice Boltzmann method; Simulated annealing algorithm; Flow and heat transfer in random porous media; Effective transport properties Lattice Boltzmann method; Simulated annealing algorithm; Flow and heat transfer in random porous media; Effective transport properties tive transport properties
Schools/Departments: University of Nottingham Ningbo China > Faculty of Science and Engineering > Department of Mechanical, Materials and Manufacturing Engineering
University of Nottingham, UK > Faculty of Engineering
Identification Number: 10.1016/j.applthermaleng.2016.12.107
Depositing User: Eprints, Support
Date Deposited: 28 Feb 2017 12:29
Last Modified: 13 Oct 2017 01:38
URI: http://eprints.nottingham.ac.uk/id/eprint/40905

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