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

Liu, Minghua; Shi, Yong; Yan, Jiashu; Yan, Yuying

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.

Citation

Liu, M., Shi, Y., Yan, J., & Yan, Y. (2017). Lattice Boltzmann simulation of flow and heat transfer in random porous media constructed by simulated annealing algorithm. Applied Thermal Engineering, 115, https://doi.org/10.1016/j.applthermaleng.2016.12.107

• Journal Article Type: Article
• Acceptance Date: Dec 24, 2016
• Online Publication Date: Dec 28, 2016
• Publication Date: Mar 25, 2017
• Deposit Date: Feb 28, 2017
• Publicly Available Date: Feb 28, 2017
• Journal: Applied Thermal Engineering
• Print ISSN: 1359-4311
• Electronic ISSN: 1873-5606
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 115
• DOI: https://doi.org/10.1016/j.applthermaleng.2016.12.107
• 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 trans
• Public URL: https://nottingham-repository.worktribe.com/output/852013
• Publisher URL: http://www.sciencedirect.com/science/article/pii/S1359431116343502