Permeability in multi-sized structures of random packed porous media using three-dimensional lattice Boltzmann method. (March 2017)

• Record Type: Journal Article
• Authors: Yang, Peipei; Wen, Zhi; Dou, Ruifeng; Liu, XunLiang
• Is Part Of: International journal of heat and mass transfer. Volume 106(2017:Mar.)
• Page Start: 1368
• Page End: 1375
• Publication Date: 2017-03
• Subjects: Permeability -- Multi-size structures -- Porous media -- D3Q19 model; Heat -- Transmission -- Periodicals; Mass transfer -- Periodicals; Chaleur -- Transmission -- Périodiques; Transfert de masse -- Périodiques; Electronic journals; 621.4022
• DOI: 10.1016/j.ijheatmasstransfer.2016.10.124
• Languages: English
• ISSNs: 0017-9310

Abstract

Highlights: The effect of randomness on permeability for porous structure is studied. The normalized permeability increases with particle size level increase. The effects of particle shape on flow characteristics are considered. Research results extend to the case in which cube length is less than cube height. Abstract: The permeability of random porous media composed of multi-sized particles is calculated by using the lattice Boltzmann method. This paper studies the randomness of porous structure, particle size level and particle shape on flow characteristics. Results show that randomness has significant effects on permeability when the number and size of spheres or cubes are fixed, especially for the cubes. As the particle size level increases, the normalized permeability increases. When the size level increases to five, the permeability does not continue to increase. Furthermore, this paper studies the effect of particle shape on flow characteristics. The results show that the normalized permeability of sphere particle is larger than cube particle. In addition, our research results extend studies to a case where the cube length is smaller than the cube height.