Pore-scale simulations of rarefied gas flows in porous media

Minh-Tuan Ho, Lianhua Zhu, Lei Wu, Peng Wang, Zhaoli Guo, Jingsheng Ma, Yonghao Zhang

Research output: Contribution to conferenceProceeding

Abstract

Although the unconventional gas has accounted for 40% of the recoverable resource of natural gas, its production contributed only 14% of nature gas supply in 2010. This share of unconventional gas in nature gas provision is expected to rise to 21% and 32% in 2020 and 2035, respectively [1]. To predict the gas permeability through ultra-tight porous media, gas rarefaction effect which enhances permeability should be taken into account. In this work, gas flows through samples of porous media are directly simulated by solving the BGK kinetic equation [2] using Discrete Velocity Method (DVM) and lattice Boltzmann method (LBM) for a wide range of the Knudsen number. While the LBM cannot capture rarefaction effect, the results indicate that the resolution of the velocity grid has little influence on the DVM results for complex geometry, even in the free molecular flow regime.
LanguageEnglish
Pages1-4
Number of pages4
Publication statusPublished - 2 Mar 2018
Event5th European Conference on Microfluidics 2018 - Strasbourg, France
Duration: 28 Feb 20182 Mar 2018

Conference

Conference5th European Conference on Microfluidics 2018
Abbreviated titleμFlu18
CountryFrance
CityStrasbourg
Period28/02/182/03/18

Fingerprint

rarefied gases
gas flow
porosity
gases
rarefaction
simulation
permeability
free molecular flow
Knudsen flow
natural gas
kinetic equations
resources
grids
geometry

Keywords

  • rarefied gas dynamics
  • tight porous media
  • permeability correction
  • shale gas

Cite this

Ho, M-T., Zhu, L., Wu, L., Wang, P., Guo, Z., Ma, J., & Zhang, Y. (2018). Pore-scale simulations of rarefied gas flows in porous media. 1-4. 5th European Conference on Microfluidics 2018, Strasbourg, France.
Ho, Minh-Tuan ; Zhu, Lianhua ; Wu, Lei ; Wang, Peng ; Guo, Zhaoli ; Ma, Jingsheng ; Zhang, Yonghao. / Pore-scale simulations of rarefied gas flows in porous media. 5th European Conference on Microfluidics 2018, Strasbourg, France.4 p.
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title = "Pore-scale simulations of rarefied gas flows in porous media",
abstract = "Although the unconventional gas has accounted for 40{\%} of the recoverable resource of natural gas, its production contributed only 14{\%} of nature gas supply in 2010. This share of unconventional gas in nature gas provision is expected to rise to 21{\%} and 32{\%} in 2020 and 2035, respectively [1]. To predict the gas permeability through ultra-tight porous media, gas rarefaction effect which enhances permeability should be taken into account. In this work, gas flows through samples of porous media are directly simulated by solving the BGK kinetic equation [2] using Discrete Velocity Method (DVM) and lattice Boltzmann method (LBM) for a wide range of the Knudsen number. While the LBM cannot capture rarefaction effect, the results indicate that the resolution of the velocity grid has little influence on the DVM results for complex geometry, even in the free molecular flow regime.",
keywords = "rarefied gas dynamics, tight porous media, permeability correction, shale gas",
author = "Minh-Tuan Ho and Lianhua Zhu and Lei Wu and Peng Wang and Zhaoli Guo and Jingsheng Ma and Yonghao Zhang",
year = "2018",
month = "3",
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Ho, M-T, Zhu, L, Wu, L, Wang, P, Guo, Z, Ma, J & Zhang, Y 2018, 'Pore-scale simulations of rarefied gas flows in porous media' 5th European Conference on Microfluidics 2018, Strasbourg, France, 28/02/18 - 2/03/18, pp. 1-4.

Pore-scale simulations of rarefied gas flows in porous media. / Ho, Minh-Tuan; Zhu, Lianhua; Wu, Lei; Wang, Peng; Guo, Zhaoli; Ma, Jingsheng ; Zhang, Yonghao.

2018. 1-4 5th European Conference on Microfluidics 2018, Strasbourg, France.

Research output: Contribution to conferenceProceeding

TY - CONF

T1 - Pore-scale simulations of rarefied gas flows in porous media

AU - Ho, Minh-Tuan

AU - Zhu, Lianhua

AU - Wu, Lei

AU - Wang, Peng

AU - Guo, Zhaoli

AU - Ma, Jingsheng

AU - Zhang, Yonghao

PY - 2018/3/2

Y1 - 2018/3/2

N2 - Although the unconventional gas has accounted for 40% of the recoverable resource of natural gas, its production contributed only 14% of nature gas supply in 2010. This share of unconventional gas in nature gas provision is expected to rise to 21% and 32% in 2020 and 2035, respectively [1]. To predict the gas permeability through ultra-tight porous media, gas rarefaction effect which enhances permeability should be taken into account. In this work, gas flows through samples of porous media are directly simulated by solving the BGK kinetic equation [2] using Discrete Velocity Method (DVM) and lattice Boltzmann method (LBM) for a wide range of the Knudsen number. While the LBM cannot capture rarefaction effect, the results indicate that the resolution of the velocity grid has little influence on the DVM results for complex geometry, even in the free molecular flow regime.

AB - Although the unconventional gas has accounted for 40% of the recoverable resource of natural gas, its production contributed only 14% of nature gas supply in 2010. This share of unconventional gas in nature gas provision is expected to rise to 21% and 32% in 2020 and 2035, respectively [1]. To predict the gas permeability through ultra-tight porous media, gas rarefaction effect which enhances permeability should be taken into account. In this work, gas flows through samples of porous media are directly simulated by solving the BGK kinetic equation [2] using Discrete Velocity Method (DVM) and lattice Boltzmann method (LBM) for a wide range of the Knudsen number. While the LBM cannot capture rarefaction effect, the results indicate that the resolution of the velocity grid has little influence on the DVM results for complex geometry, even in the free molecular flow regime.

KW - rarefied gas dynamics

KW - tight porous media

KW - permeability correction

KW - shale gas

UR - http://mflu-negf-2018.com/

M3 - Proceeding

SP - 1

EP - 4

ER -

Ho M-T, Zhu L, Wu L, Wang P, Guo Z, Ma J et al. Pore-scale simulations of rarefied gas flows in porous media. 2018. 5th European Conference on Microfluidics 2018, Strasbourg, France.