Study on Flow and Heat Transfer Characteristics of Porous Media in Engine Particulate Filters Based on Lattice Boltzmann Method

Jiale Fu, Tiechen Zhang, Menghan Li, Su Li, Xianglin Zhong and Xiaori Liu
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Jiale Fu: School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
Tiechen Zhang: School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
Menghan Li: School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
Su Li: School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
Xianglin Zhong: National Engineering Laboratory for Mobile Source Emission Control Technology, China Automotive Technology & Research Center, Tianjin 300300, China
Xiaori Liu: School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China

Energies, 2019, vol. 12, issue 17, 1-29

Abstract: To investigate the laminar flow characteristics of porous media in the inner core of engine particulate filters, a two-dimensional lattice Boltzmann–Cellular Automata (LB–CA) probabilistic model is used to simulate the flow characteristics of porous media. The variation of dimensionless permeability of various numerical structures on pore scale with Reynolds number is analyzed, and the heat transfer as well as particle filtration are considered. The results show that the flow law of different structures obeys Darcy law under the condition of low Reynolds number ( Re < 1). The dimensionless permeability coefficient of the ordered structure is significantly higher than that of the disordered structure; however. the filtration efficiency of the ordered structure decreases. With the increase of Reynolds number, the heat transfer increases. Furthermore, it is found that the particle size has a great influence on the filtration efficiency.

Keywords: particulate filters; porous media; lattice Boltzmann method; cellular automata method (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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