Lattice Boltzmann simulations for wall-flow dynamics in porous ceramic diesel particulate filters

Da Young Lee; Gi Wook Lee; Kyu Yoon; Byoungjin Chun; Hyun Wook Jung

doi:10.1016/j.apsusc.2017.08.074

Lattice Boltzmann simulations for wall-flow dynamics in porous ceramic diesel particulate filters

Da Young Lee, Gi Wook Lee, Kyu Yoon, Byoungjin Chun, Hyun Wook Jung

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

Flows through porous filter walls of wall-flow diesel particulate filter are investigated using the lattice Boltzmann method (LBM). The microscopic model of the realistic filter wall is represented by randomly overlapped arrays of solid spheres. The LB simulation results are first validated by comparison to those from previous hydrodynamic theories and constitutive models for flows in porous media with simple regular and random solid-wall configurations. We demonstrate that the newly designed randomly overlapped array structures of porous walls allow reliable and accurate simulations for the porous wall-flow dynamics in a wide range of solid volume fractions from 0.01 to about 0.8, which is beyond the maximum random packing limit of 0.625. The permeable performance of porous media is scrutinized by changing the solid volume fraction and particle Reynolds number using Darcy's law and Forchheimer's extension in the laminar flow region.

Original language	English
Pages (from-to)	72-80
Number of pages	9
Journal	Applied Surface Science
Volume	429
DOIs	https://doi.org/10.1016/j.apsusc.2017.08.074
Publication status	Published - 2018 Jan 31

Bibliographical note

Funding Information:
This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science , ICT & Future Planning (MSIP) ( NRF-2016R1A5A1009592 ).

Publisher Copyright:
© 2017 Elsevier B.V.

Keywords

Darcy-Forchheimer
Diesel particulate filter
Lattice Boltzmann method
Permeability
Pore-scale simulation
Porous media

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
General Physics and Astronomy
Surfaces and Interfaces
Surfaces, Coatings and Films

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10.1016/j.apsusc.2017.08.074

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title = "Lattice Boltzmann simulations for wall-flow dynamics in porous ceramic diesel particulate filters",

abstract = "Flows through porous filter walls of wall-flow diesel particulate filter are investigated using the lattice Boltzmann method (LBM). The microscopic model of the realistic filter wall is represented by randomly overlapped arrays of solid spheres. The LB simulation results are first validated by comparison to those from previous hydrodynamic theories and constitutive models for flows in porous media with simple regular and random solid-wall configurations. We demonstrate that the newly designed randomly overlapped array structures of porous walls allow reliable and accurate simulations for the porous wall-flow dynamics in a wide range of solid volume fractions from 0.01 to about 0.8, which is beyond the maximum random packing limit of 0.625. The permeable performance of porous media is scrutinized by changing the solid volume fraction and particle Reynolds number using Darcy's law and Forchheimer's extension in the laminar flow region.",

keywords = "Darcy-Forchheimer, Diesel particulate filter, Lattice Boltzmann method, Permeability, Pore-scale simulation, Porous media",

author = "Lee, {Da Young} and Lee, {Gi Wook} and Kyu Yoon and Byoungjin Chun and Jung, {Hyun Wook}",

note = "Funding Information: This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science , ICT & Future Planning (MSIP) ( NRF-2016R1A5A1009592 ). Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2018",

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doi = "10.1016/j.apsusc.2017.08.074",

language = "English",

volume = "429",

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journal = "Applied Surface Science",

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AU - Lee, Da Young

AU - Lee, Gi Wook

AU - Yoon, Kyu

AU - Chun, Byoungjin

AU - Jung, Hyun Wook

N1 - Funding Information: This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science , ICT & Future Planning (MSIP) ( NRF-2016R1A5A1009592 ). Publisher Copyright: © 2017 Elsevier B.V.

PY - 2018/1/31

Y1 - 2018/1/31

N2 - Flows through porous filter walls of wall-flow diesel particulate filter are investigated using the lattice Boltzmann method (LBM). The microscopic model of the realistic filter wall is represented by randomly overlapped arrays of solid spheres. The LB simulation results are first validated by comparison to those from previous hydrodynamic theories and constitutive models for flows in porous media with simple regular and random solid-wall configurations. We demonstrate that the newly designed randomly overlapped array structures of porous walls allow reliable and accurate simulations for the porous wall-flow dynamics in a wide range of solid volume fractions from 0.01 to about 0.8, which is beyond the maximum random packing limit of 0.625. The permeable performance of porous media is scrutinized by changing the solid volume fraction and particle Reynolds number using Darcy's law and Forchheimer's extension in the laminar flow region.

AB - Flows through porous filter walls of wall-flow diesel particulate filter are investigated using the lattice Boltzmann method (LBM). The microscopic model of the realistic filter wall is represented by randomly overlapped arrays of solid spheres. The LB simulation results are first validated by comparison to those from previous hydrodynamic theories and constitutive models for flows in porous media with simple regular and random solid-wall configurations. We demonstrate that the newly designed randomly overlapped array structures of porous walls allow reliable and accurate simulations for the porous wall-flow dynamics in a wide range of solid volume fractions from 0.01 to about 0.8, which is beyond the maximum random packing limit of 0.625. The permeable performance of porous media is scrutinized by changing the solid volume fraction and particle Reynolds number using Darcy's law and Forchheimer's extension in the laminar flow region.

KW - Darcy-Forchheimer

KW - Diesel particulate filter

KW - Lattice Boltzmann method

KW - Permeability

KW - Pore-scale simulation

KW - Porous media

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DO - 10.1016/j.apsusc.2017.08.074

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SN - 0169-4332

VL - 429

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EP - 80

JO - Applied Surface Science

JF - Applied Surface Science

ER -

Lattice Boltzmann simulations for wall-flow dynamics in porous ceramic diesel particulate filters

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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