TY - GEN
T1 - A numerical study for transport phenomena of nanoscale gas flow in porous media
AU - Oshima, Tomoya
AU - Yonemura, Shigeru
AU - Tokumasu, Takashi
PY - 2012
Y1 - 2012
N2 - Gas flow in porous media occurs in various engineering devices such as catalytic converters and fuel cells. In order to improve the performance of such devices, it is important to understand transport phenomena in porous media. In porous media with pores as small as a molecular mean free path, molecular motions need to be directly considered instead of treating gas flow as a continuum, and effects of complicated channels need to be taken into account. Therefore, such gas flow was analyzed by using the direct simulation Monte Carlo (DSMC) method, which is the stochastic solution of the Boltzmann equation. Numerical simulations of gas flow driven by pressure gradient without surface reaction were performed to clarify transport phenomena in porous media imitated by arranging nanoscale solid particles randomly. The effects of pressure gradient, diameter of particles and porosity on gas flow rates and permeability of porous media were investigated.
AB - Gas flow in porous media occurs in various engineering devices such as catalytic converters and fuel cells. In order to improve the performance of such devices, it is important to understand transport phenomena in porous media. In porous media with pores as small as a molecular mean free path, molecular motions need to be directly considered instead of treating gas flow as a continuum, and effects of complicated channels need to be taken into account. Therefore, such gas flow was analyzed by using the direct simulation Monte Carlo (DSMC) method, which is the stochastic solution of the Boltzmann equation. Numerical simulations of gas flow driven by pressure gradient without surface reaction were performed to clarify transport phenomena in porous media imitated by arranging nanoscale solid particles randomly. The effects of pressure gradient, diameter of particles and porosity on gas flow rates and permeability of porous media were investigated.
KW - DSMC method
KW - Micro-Nanoscale Flow
KW - Porous media
UR - http://www.scopus.com/inward/record.url?scp=84873147940&partnerID=8YFLogxK
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U2 - 10.1063/1.4769625
DO - 10.1063/1.4769625
M3 - Conference contribution
AN - SCOPUS:84873147940
SN - 9780735411159
T3 - AIP Conference Proceedings
SP - 809
EP - 815
BT - 28th International Symposium on Rarefied Gas Dynamics 2012
T2 - 28th International Symposium on Rarefied Gas Dynamics 2012, RGD 2012
Y2 - 9 July 2012 through 13 July 2012
ER -