Prediction of Darcy-Forchheimer drag for micro-porous structures of complex geometry using the lattice boltzmann method

Namgyun JEONG; Do Hyung Choi; Ching-Long LIN

doi:10.1088/0960-1317/16/10/042

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Prediction of Darcy-Forchheimer drag for micro-porous structures of complex geometry using the lattice boltzmann method

Journal article

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Prediction of Darcy-Forchheimer drag for micro-porous structures of complex geometry using the lattice boltzmann method

Namgyun JEONG, Do Hyung Choi and Ching-Long LIN

Journal of micromechanics and microengineering, Vol.16(10), pp.2240-2250

2006

DOI: 10.1088/0960-1317/16/10/042

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Abstract

The micro flows through two-dimensional and three-dimensional granular and fibrous porous media at various Knudsen numbers are studied by using the lattice Boltzmann method. For the granular materials, the results for the medium of rounded inclusions agree well with the existing empirical and numerical correlations between the permeability and the Reynolds number. However, the agreement becomes poor for the medium of sharp-cornered inclusions. A new correlation for the Darcy–Forchheimer drag for various inclusion shapes and arrangements is then proposed. For the fibrous materials, the current results are also compared with existing experimental and numerical data. They are in good agreement. The calculations are further carried out for these porous media in the slip-flow regime. The effect of rarefaction on the permeability in different porous media is discussed. A new correlation between the permeability, the porosity and the Knudsen number for both granular and fibrous porous media is presented.

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Mechanical instruments, equipment and techniques

Mechanical engineering. Machine design

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Microelectronic fabrication (materials and surfaces technology)

Instruments, apparatus, components and techniques common to several branches of physics and astronomy

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Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices

Details

Title: Subtitle: Prediction of Darcy-Forchheimer drag for micro-porous structures of complex geometry using the lattice boltzmann method
Creators: Namgyun JEONG - Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Korea, Republic of
Do Hyung Choi - Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Korea, Republic of
Ching-Long LIN - Department of Mechanical and Industrial Engineering and IIHR-Hydroscience and Engineering, University of Iowa, Iowa City, Iowa 52242-1585, United States
Resource Type: Journal article
Publication Details: Journal of micromechanics and microengineering, Vol.16(10), pp.2240-2250
Publisher: Institute of Physics; Bristol
DOI: 10.1088/0960-1317/16/10/042
ISSN: 0960-1317
eISSN: 1361-6439
Language: English
Date published: 2006
Academic Unit: Roy J. Carver Department of Biomedical Engineering; Mechanical Engineering; Radiology
Record Identifier: 9984064566202771

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